UL low voltage busway Pow-R-Way III

Transcription

1 echnical Data D E Supersedes ugust 2011 UL low voltage busway Pow-R-Way III ontents Description Page Description Page General description Standards... 2 onstruction details Electrical data... 8 Physical data ittings Elbows langes Offsets ees rosses ap boes Weatherheads Epansion joints Phase transpositions ransformer taps ransformer throat connections ransformer flange connections Reducers Meter center power takeoffs In-line power takeoff Busway connected panelboards Pow-R-Way III adapters Wall/floor/roof flanges and end closures Hangers Plug-in protective devices SPD plug-in devices Power takeoff sections Receptacle plug-in units Plug-in device electrical data Plug-in device physical data onstruction drawing Installation data inal field fit program Specifications

2 echnical Data D E General description Eaton s Pow-R-Way III is a 600V, totally enclosed, non-ventilated, sandwich bus design available with copper busbars in ratings from 225 to 5000 or with aluminum busbars from 225 to Pow-R-Way III is available in outdoor feeder, indoor feeder, indoor plug-in, and indoor sprinkler-proof configurations. ll four types can be used interchangeably without adapters or special splice plates, provided they are of the same current and system rating. he short-circuit withstand ratings for plug-in busway are equal to those of indoor and outdoor feeder busway. or IE ratings and data, see D E. Standards Pow-R-Way III meets the requirements of NEM, UL 857, S 22.2 No , IEEE, NSI, IE, E, and is manufactured in an ISO 9001 certified facility. Pow-R-Way III is also certified for Seismic Withstand apability in accordance with the earthquake requirements as specified in both the International Building ode (IB) and the alifornia Building ode. Pow-R-Way III eceeds the worst-case Zone 4 required levels and meets all applicable seismic standards for the International Building ode (IB). igure 1. Pow-R-Way III Joint Design B 3-Phase, 3-Wire with Housing Ground 3WH G B 3-Phase, 3-Wire with 50% Internal or Isolated Ground Bus 3WG or 3WI B N 3-Phase, 4-Wire with Housing Ground and 100% Neutral 4WH G B N 3-Phase, 4-Wire with 50% Internal or Isolated Ground Bus and 100% Neutral 4WG or 4WI igure 2. onductor onfigurations able 1. Pow-R-Way Designations (see igure 2) vailable onductor onfigurations Including Grounding and Neutral Options 3WG 3WI 3WH 3WHG 4WG 4WI 4WH 4WHG 4WNG 4WNI 4WNH 4WNHG B N 3-Phase, 4-Wire with Housing Ground and 200% Neutral 4WNH G B N 3-Phase, 4-Wire with 50% Internal or Isolated Ground Bus and 200% Neutral 4WNG or 4WNI hree-phase, three-wire, 50% internal ground hree-phase, three-wire, 50% isolated internal ground hree-phase, three-wire, 50% integral housing ground hree-phase, three-wire, 100% ground a hree-phase, four-wire, 50% internal ground, 100% neutral hree-phase, four-wire, 50% isolated internal ground, 100% neutral hree-phase, four-wire, 50% integral housing ground, 100% neutral hree-phase, four-wire, 100% ground a, 100% neutral hree-phase, four-wire, 50% Internal Ground, 200% Neutral hree-phase, four-wire, Isolated Internal Ground, 200% Neutral hree-phase, four-wire, 50% Integral Housing Ground, 200% Neutral hree-phase, four-wire, 100% Ground a, 200% Neutral a 100% Ground consists of the 50% integral housing ground combined with a 50% internal ground bus. 2

3 echnical Data D E onstruction details (igure 3) onductor/insulation system Busbars are fabricated from high-strength, 99.9% conductivity copper or 57% conductivity aluminum. he joint edge of each busway conductor bar is beveled while the Pow-R-Bridge conductor bars have full rounded edges. his makes for a smooth and easy connection between the busway and Pow-R-Bridge joint. he phase and neutral bars are insulated with lass B 130 epoy insulation. he epoy powder is applied by an automated fluidized bed process to ensure uniform thickness. he epoy powder is applied over the full length of the preheated bar ecept for the joint and plug-in contact surfaces. fter the powder has been fused to the busbar, the bars enter an oven to cure. his process ensures that all of the epoy powder cross links and hardens to the busbar. luidized bed applied epoy provides resistance to water absorption and chemical erosion. Epoy has outstanding heat transfer characteristics and is ideally suited for sandwich bus applications. he uniform thickness and smooth surface provided by epoy ensures that the insulation will have no cavities or voids, and also provides ecellent edge coverage to the bars. Epoy has ecellent dielectric strength, is flame-retardant and resists impacts that other lass B insulating material could not withstand. Busbars for plug-in applications have full-sized welded conductor tabs at the contact location points of the plug-in outlet. he tabs are of the same thickness as the conductor bars for all three-wire and 100% neutral configurations. he plug-in conductor tabs etend into the plug-in outlet, maintaining a true sandwich design throughout the entire busway length. he result is improved heat dissipation, better bracing, and elimination of the need to separate, or flare, the conductor bars at the plug-in opening. Maintaining a true sandwich design also eliminates potential pathways for the propagation of flame, smoke, and gas through the busway housing, commonly referred to as the chimney effect. Silver-plating is applied to all joint and contact surfaces after the fluidized bed epoy is applied. luminum busbars are silver-plated by the lstan 88 process. opper busbars are plated with silver by a flashing process. he silver-plating of the conductor tabs provides an etremely durable contact surface for the spring-loaded connections of bus plug stab assemblies. Housing details (see igure 3) Pow-R-Way III is constructed with a rugged two-piece etruded aluminum housing. here are no seams or welds across the top or bottom sides of the housing. he housing is bolted along the bottom sides below the busbars with high tensile strength zinc-plated hardware. No fastening bolts or screws penetrate the housing or enter the busbar package. Pow-R-Way III achieves the highest 6-cycle short-circuit withstand ratings available in the industry today. he non-magnetic, all-aluminum housing provides for ecellent heat dissipation and a significant reduction in reactance and magnetic flu leakage as compared to a steel or steel and aluminum combination housing. he integrity and strength of the housing ensures specifiers and users of a safe and durable installation over a broad spectrum of industrial and commercial applications. protective finish of NSI 61, epoy powder paint is applied by an automated electrostatic process. Integral ground he two-piece, etruded aluminum housing is designed, manufactured, and UL Listed as a 50% integral ground path (integral earth) and is fully fault rated. he system ground continuity is maintained through each joint by the ground path end blocks, ground path plates, and joint covers. he aluminum joint covers are furnished with ground path contact surfaces on the inside of each end. When the covers are installed, the contact surfaces are bolted directly to the ground path end blocks with four 3/ inch (12.7 mm) he bolts per cover. highly visible label is furnished on each joint cover to alert the installer that the covers must be properly installed to maintain the ground path. he result is a 50% ground path that ensures ground continuity with very low resistance characteristics. Internal ground Pow-R-Way III offers a 50% ground bus (copper or aluminum) that is internal to the busway. Isolated ground option o meet the growing demand for grounding isolation, Pow-R-Way III offers a 50% isolated ground bus that is insulated and internal to the busway. his option is available for application to operations with heavy microprocessor-based loads or large computer installations where grounding isolation is essential. igure 3. Housing ssembly 3

4 echnical Data D E 200% neutral option (igure 4) Pow-R-Way III offers a fully rated, 200% neutral bus option for busway fed distribution systems with nonlinear loads. he additional neutral capacity prevents the overheating caused by zero sequence harmonic currents. he Pow-R-Way III 200% neutral is manufactured with a single 0.50 inch (12.7 mm) thick busbar that receives the same silver-plating and lass B, 130 Epoy insulation as the phase bars. Power system harmonics are generated by various types of nonlinear loads. sinusoidal voltage applied to a nonlinear load will result in a non-sinusoidal current and waveform distortion. Loads that are switched or pulsed, such as rectifiers, thyristors, and switch-mode power supplies, are nonlinear. With the proliferation of electronics into industrial, commercial, and institutional applications, nonlinear loads have become a significant and critical component of most modern distribution and control systems. Eamples of nonlinear loads are personal computers, UPS systems, variable frequency motor controllers, electronic lighting ballasts, fa and copying machines, medical test equipment, and many other microprocessor-based apparatus. Nonlinear load currents typically are etremely high in harmonic content. he harmonics create numerous problems in electrical systems and equipment. Some harmonics are negative sequence with 120 phase displacement (this means the phase rotation is B instead of B). Positive sequence harmonics have 120 phase displacement, but are of the same rotation as the distribution system. ertain nonlinear loads cause odd triplen harmonics, which are zero sequence with no phase displacement. Balancing the phase load currents in a three-phase, four-wire system will normally reduce neutral currents to zero if load currents have an undistorted sinusoidal waveform. However, because zero sequence harmonics are additive and will not cancel each other in the neutral, the neutral current can be as high as 1.73 times the phase current, even with the phase currents perfectly balanced. his can result in overheated neutrals and lead to deterioration of equipment performance and a shortened equipment life cycle. he omputer and Business Equipment Manufacturers ssociation (BEM) recommends that neutrals be oversized to at least 173% of the ampacity of the phase conductors to prevent problems. Pow-R-Way III offers a fully rated, 200% neutral bus option for busway fed distribution systems with non-sinusoidal loads. he additional neutral capacity prevents the overheating caused by high harmonic neutral currents. B N Pow-R-Way III, hree-phase our-wire with Housing Ground and 200% Neutral op UL fire stop system Pow-R-Way III busway may be used in UL Listed through-penetration fire stop systems. Systems applicable to busway e.g., system number -J-6002) are listed in the UL ire Resistance Directory under hrough-penetration ire Stop Systems and have met the SEM E814 (UL 1479) criteria. or typical installations shown in igure 5, the installing contractor uses mineral wool batt and fire stop sealant. In riser applications, the system is used in combination with Pow-R-Way III vertical spring hangers and a floor flange. In horizontal applications, the system is used in combination with two wall flanges, one on each side of the wall, and sealant. Notee: his information is provided as a guideline for typical fire stop systems. onsult the fire stop system sealant manufacturer for the UL file number and specific product information. Vertical Hanger Mounting Support loor lange 12 Ga Steel UL Listed Pow-R-Way III Busway loor irestop Material Suggest 3m, Specified echnologies, or Equivalent Manufacturer ire Stop Products UL 1479 Listed loor lange (Optional) igure 5. ypical Installations of Pow-R-Way III in ire Stop Systems DI SmartBolts DI SmartBolts are an optional torque/tension indicating bolt that can be used in any standard Pow-R-Way III bridge joint (see page 5, Pow-R-Bridge Joint). In place of checking each joint connection with a torque wrench, DI SmartBolts provide a visible indication of a loose or tensioned condition. he bright red indication of a loose fastener will gradually darken as the fastener is tightened until it turns to a deep black color, indicating that the joint has been tightened to the proper torque/tension. Standard preventive maintenance becomes a simple and safe visual inspection. igure % Neutral ross Section igure 6. DI SmartBolts 4

5 echnical Data D E Pow-R-Bridge (igure 7) Pow-R-Way III joint connections are made with the Pow-R-Bridge joint package, which is installed on each section of busway prior to shipment. double-headed, torque-indicating bolt is provided to ensure that proper installation torque is achieved. all-away instruction tags are furnished on the torque-indicating bolt heads to allow for visual inspection from a distance. When the proper torque value is achieved, the top bolt head will shear off and allow the tag to fall to the floor. ny joint that is improperly torqued will retain the highly visible (caution yellow) tag at the bolt head. he Pow-R-Bridge can provide an adjustment of ±0.50 inch (12.7 mm) at each joint. Over adjustment is prevented by the joint covers, which will only allow a 0.50 inch (12.7 mm) adjustment to be made and by stopping lances on the conductor bars of the Pow-R-Bridge. he non-rotating design of the Pow-R-Bridge maintains its configuration integrity when it has been removed from a section of busway. he conductors and insulators will not displace or swivel, making reinstallation of the Pow-R-Bridge quick and easy. Double-headed orque-indicating Bolt (Bottom) 1/4-20 flg. Head He Bolt (4 per cover) Ground Path ontact Surface Ground Path End Block Bridge Joint Belleville Pressure Plate Washer (op & Bottom) High Strength Glass Polyester Insulators aptive Nut Retainer igure 7. Indoor Bridge Joint eatures Ground Path Plate Ground Path End Block 130º Epoy Insulation on Bars Bridge Joint Retainer Screw flg. Head He Bolt (4 per over) Joint over Ground Path Label Outdoor Pow-R-Bridge (igure 8) Joint connections for outdoor feeder as well as sprinkler-proof plug-in busway are made with a weatherized version of the Pow-R-Bridge joint. his two-piece design allows for an ingress protection rating of IP66. his reusable design is made by using special ground plates designed to work with a top and bottom joint cover to form a weatherized seal. his UL Listed package comes with drain plugs and an access cap to the torque bolt per the UL standard. able 2. Busway Pow-R-Bridge Joint Dimensions UL 857 mpere Rating opper igure 9 onfigurations Dimensions in Inches (mm) W L (114.3) 7.38 (187.5) (114.3) 7.38 (187.5) (114.3) 7.38 (187.5) (114.3) 7.38 (187.5) (130.0) 7.38 (187.5) (142.8) 7.38 (187.5) (155.4) 7.38 (187.5) (180.9) 7.38 (187.5) (212.9) 7.38 (187.5) 2500 B (276.4) 7.38 (187.5) (403.4) 7.38 (187.5) (466.9) 7.38 (187.5) 5000 D (594.6) 7.38 (187.5) luminum (114.3) 7.38 (187.5) (114.3) 7.38 (187.5) (114.3) 7.38 (187.5) (142.8) 7.38 (187.5) (155.4) 7.38 (187.5) (180.9) 7.38 (187.5) (212.9) 7.38 (187.5) 1600 B 9.12 (231.6) 7.38 (187.5) 2000 B (276.4) 7.38 (187.5) (466.9) 7.38 (187.5) 3200 D (505.0) 7.38 (187.5) 4000 D (594.6) 7.38 (187.5) Joint lamp Bolts op Joint over aptive Nut Retainer Ground Plate Gasketed Moisture Barrier Plate Joint lamp Spacer Ground Path End Block orque Bolt ccess ap igure 8. Outdoor Bridge Joint eatures igure 9. Pow-R-Bridge Joint Drain Plug Phasing Label Belleville Washer High Strength Glass Polyester Insulators Pow-R-Bridge Joint 1/4-20 lange Head He Bolt Bottom Joint over Joint lamp Nut Drain Plug Warning/Ground Path Label losed ell Neoprene Gasket 5

6 echnical Data D E Pow-R-Way III feeder busway (igure 10 and able 3) 225 to 5000 copper 225 to 4000 aluminum Straight sections of feeder busway can be supplied in any length, at 1/8 inch (3.2 mm) increments, from a inch (406.4 mm) minimum to a 10 foot (3m) maimum. igure 10 illustrates the configuration of feeder busway and Pow-R-Bridge for the available ampere ratings. See able 3 below for reference to he proper configuration. onfiguration op View 1 Bar Per Phase able 3. eeder Busway onfiguration UL 857 mpere Rating u l igure 10 onfiguration onfiguration B op View 1 Bar Per Phase B B 3200 onfiguration op View 2 Bars Per Phase D D Each section will include one, factory-installed Pow-R-Bridge mounted to the left end of the busway (with the to the top, when viewing the bus from the side). Each Pow-R-Bridge will have a label that must always match the orientation of the busway. onfiguration D op View 2 Bars Per Phase Minimum (406.4) ront View igure 10. eeder Busway 6

7 echnical Data D E Pow-R-Way III plug-in busway (igure 11 and able 4 and able 5) 225 to 5000 copper 225 to 4000 aluminum Straight sections of plug-in busway are made only in inch (609.6 mm) incremental lengths with a maimum length of 10 feet (3m). igure 11 depicts the configuration of plug-in busway and Pow-R-Bridge for the available ampere ratings. See able 4 below for reference to the proper configuration (304.8) Spacing (609.6) onfiguration op View 1 Bar Per Phase (304.8) Spacing (304.8) (609.6) (304.8) able 4. onfiguration UL 857 mpere Rating u l B B D D igure 10 onfiguration (304.8) onfiguration B op View 1 Bar Per Phase Spacing (609.6) onfiguration op View 2 Bars Per Phase Spacing (304.8) (609.6) (304.8) (304.8) able 5 below illustrates the quantity of plug-in openings per side that are available per standard section. able 5. Number of Plug-In Openings Dimensions in Inches (mm) Number of Plug-In Openings Duct Length ront Back (609.6) (1219.2) (1828.8) (2438.4) (3048.0) (304.8) onfiguration D op View 2 Bars Per Phase Spacing (609.6) ront View (304.8) Each section will include one, factory-installed Pow-R-Bridge mounted to the left end of the busway (with the label to the top, when viewing the bus from the side). Each Pow-R-Bridge will have a label that must always match the orientation of the busway. Plug-in outlet he plug-in outlet and cover are made from a durable, high-strength, polycarbonate material, which is rated as lass B, 130, insulation. he plug-in cover is designed to protect the contact surfaces and to prevent the entry of dirt, dust, or moisture. he cover has a positive screw close feature that prohibits the opening of the cover without the use of a tool. he cover is also Utility leadlock sealable. s a countermeasure to the effects of thermal epansion and mechanical vibration, the plug-in outlet is secured to the busway housing with high tensile strength locking hardware. igure 11. Plug-In Busway over an Be Hinged on Either Side Leadlock Sealable Hinge Pins igure 12. Plug-In Outlet over High Strength Polycarbonate lass B 130º G B N ingersafe Plug-in Opening Positive Screw lose eature 7

8 echnical Data D E Electrical data able 6. Short-ircuit Rating UL 857 mpere Rating 6-ycle rms Symmetrical Short-ircuit Rating Maimum lass L use Needed to chieve 6-ycle rms Series Rating Plug-in eeder 100 k 200 k luminum ,000 85, ,000 85, ,000 85, , , , , , , , , , , , , , , , , , ,000 opper ,000 85, ,000 85, ,000 85, ,000 85, , , , , , , , , , , , , , , , , , ,000 able 7. Resistance, Reactance, and Impedance luminum Milliohms per 100 eet (30.5m) Line-to-Neutral luminum Plug-In and eeder Busway UL 857 mpere Rating Resistance R Reactance Impedance Z able 8. Resistance, Reactance, and Impedance opper Milliohms per 100 eet (30.5m) Line-to-Neutral opper Plug-In and eeder Busway UL 857 mpere Rating Resistance R Reactance Impedance Z able 9. Resistance Values for Integral Housing Ground (Only) Milliohms per 100 eet (30.5m) UL 857 mpere Rating luminum Phase onductors opper Phase onductors Derating table for higher ambient temperatures Pow-R-Way III busway may be operated continuously at its assigned ratings without eceeding the maimum hot spot temperature rise of 55, provided the ambient temperature does not eceed 55. or higher ambient temperatures, the ratings should be reduced by applying the appropriate multiplier shown in the following table. able 10. Higher mbient emperature Multipliers mbient emperature Multiplier

9 echnical Data D E Electrical data (continued) Line-to-line voltage drop he table below gives average three-phase voltage drop per 100 feet (30.5m) at rated current and varying power factor. Line-to-neutral voltage drop is obtained by multiplying the line value by 577. able 11. Line-to-Line Voltage Drop Percent Power actor UL 857 mpere Rating opper luminum NNote: Voltage drop = 3 I (R cos ø + sin ø) Volts/100 ft (30.5m) concentrated load, where cos ø = power factor. NNote: or plug-in distributed loads, divide the voltage drop by 2. See IEEE Standard NNote: ctual voltage drop for loads less than full rated current and different lengths may be calculated by multiplying the values from able 11 by (actual/rated current) (actual length/100 ft [30.5m]). 9

10 echnical Data D E Electrical data (continued) Housing ground vs. internal ground Eaton s Pow-R-Way III busway offers a variety of grounding options. wo of which are 50% integral housing ground and 50% internal ground. he 50% internal ground option has a separate ground conductor internal to the housing, which is rated 50% of the phase conductor. he integral housing ground is where the etruded aluminum housing is used as the ground path and no internal ground conductor is provided. he housing is UL Listed as a 50% integral ground path. his type of ground path is as effective as a ground conductor as an internal ground bar. able 12 shows a cross-sectional comparison between the aluminum housing and internal ground bar. he integral housing ground provides a larger ground path that is over 100% of the cross-sectional area of the phase conductors. igure 13 illustrates the difference between the two grounding options. Integral Housing Ground Internal Ground Bar igure 13. Housing Ground vs. Internal ground able 12. Housing Ground vs. Internal Ground omparison UL 857 mpere Rating u l Bar Size (in) Bar per Phase ross-sectional rea (sq in) Internal Ground Housing Ground 10

11 echnical Data D E Physical data Dimensions busbar and housing able 13. hree-wire with No Neutral UL 857 mpere Rating u l Phase Bar Size (Depth and Width) Inches (mm) Bar Per Phase onductor onfiguration and Housing Size (Width Height) Inches (mm) 50% Integral Housing Ground 3WH 50% Internal Ground Bus 3WHG a 50% Internal Isolated Ground 3WI ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B a 100% ground available with same dimensions, which uses 50% internal ground and 50% internal housing ground. b Refer to igure 13 on Page 12 for configuration and B. igure 14 onfig. b able 14. our-wire with 100% Neutral UL 857 mpere Rating u l Phase and Neutral Bar Size (Depth and Width) Inches (mm) Bar Per Phase onductor onfiguration and Housing Size (Width Height) Inches (mm) 50% Integral Housing Ground 4WH 50% Internal Ground Bus 4WHG a 50% Internal Isolated Ground 4WI ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B a 100% ground available with same dimensions, which uses 50% internal ground and 50% internal housing ground. b Refer to igure 14 on page 12 for configuration and B. igure 14 onfig. b 11

12 echnical Data D E Physical data (continued) Dimensions busbar and housing (continued) able 15. our-wire with 200% Neutral UL 857 mpere Rating u l Phase Bar Size (Depth and Width) Inches (mm) a Bar Per Phase onductor onfiguration and Housing Size (Width Height) Inches (mm) 50% Integral Housing Ground 4WH 50% Internal Ground Bus 4WHG b 50% Internal Isolated Ground 4WI ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B ( ) ( ) ( ) ( ) B a Neutral bar is 0.50 (12.7) width shown. b 100% ground available with same dimensions, which uses 50% internal ground and 50% integral housing ground. c Refer to igure 14 for onfiguration and B. igure 14 onfig. c Width Width Height B N Height B N B N onfiguration 225 to 2000 mpere luminum 225 to 2500 mpere opper onfiguration B 2500 to 4000 mpere luminum 3200 to 5000 mpere opper igure 14. Pow-R-Way III ross-section Dimensions 12

13 echnical Data D E Physical data (continued) Weights able 16. Weight (Pounds/t) and urrent Density (mperes/in 2 ) UL 857 mpere Rating UL 857 urrent Density mperes/in 2 Weight Including Integral Housing Ground (Pounds/t) hree-wire our-wire 100% Neutral our-wire 200% Neutral dd for Internal Ground u l u l u l u l u l u l able 17. Weight (kg/m) and urrent Density (mperes/cm 2 ) Weight Including Integral Housing Ground (kg/m) UL 857 mpere Rating UL 857 urrent Density mperes/cm 2 hree-wire our-wire 100% Neutral our-wire 200% Neutral dd for Internal Ground u l u l u l u l u l u l

14 echnical Data D E Physical data (continued) able 18. mpere Ratings Needed to be at or Below 1000 mperes/sq In Density UL 857 mpere Rating u l Bar Size opper Standard Density 1000/Sq In Density djusted Rating luminum Standard Density 1000/Sq In Density None None None None None None N/ N/ None djusted Rating pplication note he above table is meant to help the user and specifier select the higher busway ratings to meet the performance specification of a current density value no higher than 1000 per sq inch. he current density values of our standard busway offerings based upon temperature rise are listed in the 4th and 7th columns of the table. hese ratings are UL Listed and labeled, and safe to apply. However, certain jurisdictions or applications require a better margin of safety, and choose to use a 1000/sq inch density standard. When the lower than standard densities are required, such as 1000/sq inch, then the only option is to oversize the busway from the standard bar sizes and ampacity ratings. Oversizing provides more busbar material in cross-sectional area, and results in lower current densities and lower temperature rises for a given value of load current. By eample, take the case of 1600 copper busway. he standard product uses a bar size of inches ( sq inch in area) and which results in 1506 sq inch density (calculated by 1600/ sq inch = 1506/sq inches), as listed in the table. If a project or application using bus runs epected to carry 1600 of load current stipulated that the current densities eperienced by the busway should be no greater than 1000/sq inch, then oversizing to busway bars used in the standard 2500 rating using inch bars (2.0 sq inch area) yields a current density of 1600/2.0 sq inches. 800/sq inches for the 1600 of load current. Why not just oversize to 2000 busway? he 2000 bar size is inches or sq inches. omputing the new density yields 1600/1.375 sq inch = 1164/sq inch, which is higher than the desired value of no greater density than 1000/sq inch. herefore, the table provides a quick method of determining the ampacity of busway required to meet current density values no greater than 1000/sq inch for given values of load current. he most important columns of data are the 1st, 7th, and 10th. Eaton warrants that the Pow-R-Way III product will perform as intended regardless of the method of selection, either temperature rise only or current density. Eaton encourages specifiers who use current density as the criteria for busway selection to select and specify the busway ratings recommended in the above table under the djusted Rating column, and to not rely upon the contractors or bidders to resolve the matter in the later stages of a project. If sizing busway is strictly based upon current density, do not specify or use the standard ampacity values based upon the UL and NEM temperature rise standard on ontract Drawings. 14

15 echnical Data D E Physical data (continued) ittings Rearward Upward here is a fitting to meet every application need: flanges, elbows, offsets, tees, cable tap boes, weatherheads, transformer connections, power take-off sections, reducers, adapter cubicles, epansion joints, and end closures. hese fittings, along with standard and minimum dimensions, are described on the following pages. orward When making field measurements and layouts, it should be remembered that the dimensions are given from the centerline of the Pow-R-Bridge. Downward he relationship of fittings to straight lengths (forward, rearward, upward, and downward) is illustrated in igure 15. ll straight lengths and fittings are marked with a label and an label. he and locations will also be noted on the construction, or the as-built, Eaton drawings furnished. When installing the busway, the and markings of each section must match. ailure to do so will result in an improper installation with the phase bars out of sequence. igure 15. ypical Busway omponents End loser Built-in Power ake-off Bolt-on Unit In-Line Power ake-off 90º Phase ransposition Upward/Downward orner Joint Offset Plug-in Unit Wall lange Plug-in Bus orward/ Rearward Elbow Protected Reducer loor lange Upward/ Downward ee ransformer orward/rearward orner Joint Outdoor Indoor enter able ap Bo orward/ Rearward ee 180º Phase ransposition Switchboard Switchboard ransformer hroat Weatherhead Epansion Joint End able ap Bo igure 16. and Orientation for ittings 15

16 echnical Data D E Physical data (continued) raditional indoor and outdoor elbows (igure 17) Elbows are used to make 90 changes in the direction of busway runs. he four types that are available are forward, rearward, upward, and downward. See minimum leg lengths listed for each type in able 19 and able 20. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. igure 17. raditional Elbows orner joint elbows (igure 18) he Pow-R-Way III corner joint elbow can be installed in areas where a traditional 90 turn could never have been accomplished before. Pow-R-Way III corner joint elbows can solve any serious pathway problem and contribute to successful layouts with minimal space requirements. he corner joint elbow is UL Listed for indoor applications only and is also certified for seismic withstand capability to worst-case, Zone 4 levels. NNote: ll dimensions are to the centerline of the corner joint connection. orward Rearward orward Upward Y L Downward Upward igure 18. orner Joint Elbows (or Indoor pplications Only) Y Y Rearward L Downward Y able 19. orward and Rearward Elbows UL 857 mpere Rating Dimensions in Inches (mm) u l Minimum Leg Lengths (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (355.6) (368.3) (381.0) (406.4) (469.9) (495.3) (520.7) (571.5) able 20. Upward and Downward Elbows Dimensions in Inches (mm) UL 857 mpere Rating Minimum Leg Lengths u l Upward Downward (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (304.8) (330.2) (304.8) (330.2) (304.8) (330.2) (304.8) (330.2) able 21. orward/rearward orner Joints UL 857 mpere Rating Dimensions in Inches (mm) u l Y (23.9) 5.38 (136.7) (23.9) 5.38 (136.7) (23.9) 5.38 (136.7) (23.9) 5.38 (136.7) (31.8) 5.69 (144.5) (38.1) 5.94 (150.9) (44.5) 6.19 (157.2) (57.2) 6.69 (169.9) (73.2) 7.31 (185.7) (82.6) 7.70 (195.6) (104.7) 8.57 (217.7) (168.7) (281.2) (200.4) (312.9) (219.7) (332.2) (264.7) (377.2) 16

17 echnical Data D E able 22. Upward/Downward orner Joints Dimensions in Inches (mm) UL 857 mpere Rating Housing Ground Internal Ground Isolated Ground u l Y Y Y hree-wire (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) (119.6) 4.35 (110.5) 4.77 (121.2) 4.41 (112.0) 5.27 (133.9) 4.43 (112.5) our-wire (100%) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) (119.6) 5.00 (127.0) 4.77 (121.2) 5.07 (128.8) 5.28 (134.1) 5.09 (129.3) our-wire (200%) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) (126.5) 5.10 (129.5) 5.04 (128.0) 5.17 (131.3) 5.55 (141.0) 5.19 (131.8) 17

18 echnical Data D E Physical data (continued) Special angle elbows Special angle elbows are traditional elbows that allow the direction of the busway runs to change at angles greater than 90. hey allow easy routing through non-traditional corridors. he four types offered are forward, rearward, upward, and downward. See minimum leg lengths for each type listed in able 23 and able 24. able 23. orward and Rearward Elbows UL 857 mpere Rating Dimensions in Inches (mm) u l Minimum Leg Lengths (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (355.6) (368.3) (381.0) (406.4) (469.9) (495.3) (520.7) (571.5) orward Rearward Upward able 24. Upward and Downward Elbows Dimensions in Inches (mm) UL 857 mpere Rating Minimum Leg Lengths u l Upward Downward (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (254.0) (330.2) (304.8) (330.2) (304.8) (330.2) (304.8) (330.2) (304.8) (330.2) Downward igure 19. Special ngle Elbows 18

19 echnical Data D E Physical data (continued) Standard and flush flanges (igure 20) langes provide a direct connection to low voltage switchgear, switchboards, motor control centers, and other apparatus. utout dimensions and drilling plans are provided with the customer drawings and it is the responsibility of the switchgear manufacturer to provide the opening, flange drillings, connecting hardware, and bus risers in their equipment. or proper coordination between busway and other equipment, detailed drawings, including switchgear orientation, must accompany the order. standard flange can be supplied to the left or right of a section, as required. flush flange is used when the busway must lay close to the top of a switchboard. he edge of the busway is 1.25 inches (31.8 mm) from the top of the switchboard. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 25. Switchboard langes UL 857 mpere Rating u l Dimensions in Inches (mm) lush lange Min. Leg Length Standard lange Min. Leg Length (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) (381.0) (304.8) igure 20. langes Vault flanges Vault flanges are used to enter a utility vault for termination to the utility transformer. Each vault flange is custom designed to meet each specific utility specification. Vault flanges may look similar to those shown in igure 21. Please consult the factory for specific dimensions based upon utility specifications (25.4) B N B G igure 21. Vault langes 19

20 echnical Data D E Physical data (continued) Elbow flanges (igure 22) n elbow flange is a combination of a standard elbow and a standard flange fabricated into a single fitting. Elbow flanges are typically used when the minimum leg lengths for either the standard elbow or standard flange cannot be maintained. Minimum leg lengths are listed in able 26 and able 27. Y NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 26. orward and Rearward Elbow langes UL 857 mpere Rating Minimum Dimensions in Inches (mm) u l Joint Leg lange Leg Y (330.2) 8.75 (222.3) (330.2) 8.75 (222.3) (330.2) 8.75 (222.3) (330.2) 8.75 (222.3) (330.2) 8.75 (222.3) (342.9) 9.25 (235.0) (342.9) 9.25 (235.0) (355.6) 9.75 (247.7) (368.3) (260.4) (381.0) (273.1) (406.4) (298.5) (469.9) (355.6) (495.3) (387.4) (520.7) (406.4) (571.5) (450.9) orward Elbow Right lange Upward Elbow Right lange Y able 27. Upward and Downward Elbow langes UL 857 mpere Rating Minimum Dimensions in Inches (mm) Joint Leg lange Leg Y u l Up Down Up Down (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) Rearward Elbow Right lange Y (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (254.0) (330.2) 5.75 (146.1) 8.75 (222.3) (304.8) (330.2) 7.75 (196.9) 8.75 (222.3) (304.8) (330.2) 7.75 (196.9) 8.75 (222.3) (304.8) (330.2) 7.75 (196.9) 8.75 (222.3) (304.8) (330.2) 7.75 (196.9) 8.75 (222.3) Downward Elbow Right lange Y igure 22. Elbow langes 20

21 echnical Data D E Physical data (continued) Offsets (igure 23) n offset is used to avoid obstacles and to conform to the building s structure. It is two elbows fabricated into a single fitting for use where space restrictions prohibit the use of two standard 90 elbows. he minimum leg lengths are listed in able 28 and able 29. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. Y Y 3.00 (Minimum) able 28. orward and Rearward Offsets UL 857 mpere Rating u l (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (355.6) (368.3) (381.0) (406.4) (469.9) (495.3) (520.7) (571.5) Minimum Dimensions Y in Inches (mm) 3.00 (76.2) (Minimum) orward Y Z Downward able 29. Upward and Downward Offsets Minimum Dimensions in Inches (mm) UL 857 mpere Rating Upward Downward u l Y Z Y Z (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (254.0) (330.2) (330.2) (254.0) (304.8) (330.2) (330.2) (304.8) (304.8) (330.2) (330.2) (304.8) (304.8) (330.2) (330.2) (304.8) (304.8) (330.2) (330.2) (304.8) 3.00 L (76.2) (Minimum) Y Y Rearward Y Upward Z 3.00 (76.2) (Minimum) igure 23. Offsets 21

22 echnical Data D E Physical data (continued) ombination offsets (igure 24) ombination offsets are used to conform to the building s structure and change direction, using a small amount of space. hey are two different oriented elbows fabricated into a single fitting. orward or rearward directions are determined by the and locations. Please refer to page 15. Minimum leg lengths are listed in able 30. able 30. ombination Offsets UL 857 mpere Rating Dimensions in Inches (mm) hree-wire/ our-wire u l Y Z Z our-wire 200% N Upward/orward/Rearward (254.0) (330.2) 7.00 (177.8) 7.00 (177.8) (254.0) (330.2) 7.00 (177.8) 7.00 (177.8) (254.0) (330.2) 7.00 (177.8) 7.00 (177.8) (254.0) (330.2) 7.00 (177.8) 7.00 (177.8) (254.0) (330.2) 7.00 (177.8) 7.50 (190.5) (254.0) (342.9) 7.50 (190.5) 7.50 (190.5) (254.0) (342.9) 7.50 (190.5) 8.00 (203.2) (254.0) (355.6) 8.00 (203.2) 8.50 (215.9) (254.0) (368.3) 9.00 (228.6) 9.00 (228.6) (254.0) (381.0) 9.00 (228.6) 9.50 (241.3) (254.0) (406.4) (254.0) (266.7) (304.8) (469.9) (317.5) (330.2) (304.8) (495.3) (355.6) (355.6) (304.8) (520.7) (368.3) (381.0) (304.8) (571.5) (419.1) (419.1) Downward/orward/Rearward (330.2) (330.2) 7.00 (177.8) 7.00 (177.8) (330.2) (330.2) 7.00 (177.8) 7.00 (177.8) (330.2) (330.2) 7.00 (177.8) 7.00 (177.8) (330.2) (330.2) 7.00 (177.8) 7.00 (177.8) (330.2) (330.2) 7.00 (177.8) 7.50 (190.5) (330.2) (342.9) 7.50 (190.5) 7.50 (190.5) (330.2) (342.9) 7.50 (190.5) 8.00 (203.2) (330.2) (355.6) 8.00 (203.2) 8.50 (215.9) (330.2) (368.3) 9.00 (228.6) 9.00 (228.6) (330.2) (381.0) 9.00 (228.6) 9.50 (241.3) (330.2) (406.4) (254.0) (266.7) (330.2) (469.9) (317.5) (330.2) (330.2) (495.3) (355.6) (355.6) (330.2) (520.7) (368.3) (381.0) (330.2) (571.5) (419.1) (419.1) Z Y L Z L L L Z Z Y igure 24. ombination Offsets 22

23 echnical Data D E Physical data (continued) ees (igure 25) tee is a busway fitting suitable for connection in three directions. he minimum leg lengths are shown in able 31 and able 32. able 31. orward and Rearward ees UL 857 mpere Rating Minimum Leg Dimensions in Inches (mm) u l Y B (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (355.6) (368.3) (381.0) (406.4) (692.2) (723.9) (743.0) (787.4) NNote: (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (355.6) (368.3) (381.0) (406.4) 8.00 (203.2) 8.00 (203.2) 8.00 (203.2) 8.00 (203.2) (670.1) (701.6) (720.9) (765.1) (492.5) (555.8) (594.6) (684.3) ll dimensions are to the centerline of the Pow-R-Bridge (536.4) (600.2) (638.0) (727.2) able 32. Upward and Downward ees (continued) UL 857 mpere Rating Minimum Leg Dimensions in Inches (mm) u l Y B (701.6) (606.6) (638.1) (637.4) (701.6) orward Rearward (311.2) (311.2) (311.2) (311.2) (311.2) (647.7) (647.7) (647.7) (647.7) (647.7) B Y (290.1) (416.1) (473.7) (518.4) (608.1) Y Y (558.8) (368.3) (473.7) (470.0) (558.8) able 32. Upward and Downward ees Upward UL 857 mpere Rating Minimum Leg Dimensions in Inches (mm) u l Y B (539.8) (539.8) (311.2) (311.2) (647.7) (647.7) 5.00 (127.0) 5.00 (127.0) 9.25 (235.0) 9.25 (235.0) (539.8) (311.2) (647.7) 5.00 (127.0) 9.25 (235.0) (539.8) (555.8) (568.5) (311.2) (311.2) (311.2) (647.7) (647.7) (647.7) 5.00 (127.0) 5.62 (142.7) 6.12 (155.4) 9.25 (235.0) (266.7) (292.1) Downward B Y (581.2) (311.2) (647.7) 6.62 (168.1) (317.5) (606.6) (311.2) (647.7) 7.62 (193.5) (368.3) (638.1) (657.4) (311.2) (311.2) (647.7) (647.7) 8.65 (219.7) 9.65 (245.1) (431.8) (470.0) igure 25. ees 23

24 echnical Data D E Physical data (continued) rosses (igure 26) cross is a busway fitting suitable for connection in four directions. It is applied when a bus run must branch off in three directions, all in the same plane. able 33. orward and Rearward rosses UL 857 mpere Rating Minimum Leg Dimensions in Inches (mm) u l Y (330.2) (330.2) (330.2) (330.2) (330.2) (330.2) (330.2) (330.2) (330.2) (330.2) (342.9) (342.9) (342.9) (342.9) (355.6) (355.6) (368.3) (368.3) (381.0) (381.0) (406.4) (406.4) (551.2) (551.2) (582.7) (582.7) (602.2) (602.2) (637.3) (637.3) orward Rearward NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 34. Upward and Downward rosses UL 857 mpere Rating Minimum Leg Dimensions in Inches (mm) u l Y (539.8) (647.7) (539.8) (647.7) (539.8) (647.7) (539.8) (647.7) (555.8) (647.7) (568.5) (647.7) (581.2) (647.7) (606.6) (647.7) (638.1) (647.7) (657.4) (647.7) (701.6) (647.7) (606.6) (647.7) (638.1) (647.7) (637.4) (647.7) (701.6) (647.7) igure 26. rosses Upward Downward 24

25 echnical Data D E Physical data (continued) End cable tap bo (igure 27) End cable tap boes are used to feed a run of busway with cable and conduit or where loads served by busway are connected without the need for overcurrent protection. or indoor applications, the side, side opposite, and the end panel are removable for access to the lugs. or outdoor applications, these panels are gasketed to prevent moisture from entering. In addition, the outdoor end cable tap boes are provided with removable gasketed side access panels located on the and side opposite for more accessibility to the lugs. Removable side access panels are available on indoor cable tap boes upon request. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. Side Removable Indoor (304.8) (965.2) L Side Opposite Removable Indoor Du (381.0) (444.5) (762.0) (825.5) Gasketed ccess over on ront and Back of Bo for Outdoor ap Boes Standard igure 27. End able ap Bo a Dimension D: or mechanical lugs = inches (542.0 mm). or compression lugs = inches (493.8 mm). b 200% neutral. able 35. End able ap Bo Dimension opper UL 857 mpere Rating Dimension in Inches (mm) b luminum UL 857 mpere Rating Dimension in Inches (mm) b Quantity of Mechanical erminals, Range One #4 (20 mm 2 ) 600 kcmil (300 mm 2 ), wo 1/0 (50 mm 2 ) 250 kcmil (120 mm 2 ) a opper luminum G c P d N e G c P d N e (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (520.7) (304.8) (520.7) (520.7) (622.3) (622.3) (622.3) (774.5) (1143.0) (774.5) (774.5) (1143.0) (1143.0) a or compression lugs, factory provides provisions only. b ll dimensions shown in igure 27 remain constant regardless of system wiring configuration. c Denotes quantity of terminals per ground bus. d Denotes quantity of terminals per phase and 100% neutral bus. e Denotes quantity of terminals per 200% neutral bus option. 25

26 echnical Data D E Physical data (continued) enter cable tap bo (igure 28) enter cable tap boes are used to center feed a run of busway with cable and conduit or where loads served by the busway are connected without the need for overcurrent protection. or indoor applications, the side, side opposite, and the end panel are removable for access to the lugs. or outdoor applications, these panels are gasketed to prevent moisture from entering. In addition, the outdoor center cable tap boes are provided with removable gasketed access panels located on the front and back for more accessibility to the lugs. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 36. enter ap Bo Details Dimension Dimension in Inches (mm) opper (92.2) 4.75 (120.7) 6.00 (152.4) (273.1) (311.2) luminum (92.2) 4.75 (120.7) 6.00 (152.4) (273.1) (311.2) igure 28. enter able ap Bo a Dimension D: or mechanical lugs = inches (542.0 mm). or compression lugs = inches (489.0 mm). b 200% neutral. able 37. enter ap Bo Details Dimensions and B opper luminum Quantity of Mechanical erminals, Range One #4 (20 mm 2 ) 600 kcmil (300 mm 2 ), wo 1/0 (50 mm 2 ) 250 kcmil (120 mm 2 ) a UL 857 Dimensions in Inches (mm) UL 857 Dimensions in Inches (mm) opper luminum mpere Rating b B b mpere Rating b B b G c P d N e G c P d N e (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (419.1) (1016.0) (520.7) (1079.5) (520.7) (1079.5) (520.7) (1079.5) (520.7) (1079.5) (622.3) (1143.0) (622.3) (1143.0) (622.3) (1143.0) (774.5) (1473.2) (1143.0) (1536.7) (771.7) (1473.0) (771.7) (1473.0) (1143.0) (1536.7) (1143.0) (1536.7) a or compression lugs, factory provides provisions only. b ll dimensions shown in igure 28 remain constant regardless of system wiring configuration. c Denotes quantity of terminals per ground bus. d Denotes quantity of terminals per phase and 100% neutral bus. e Denotes quantity of terminals per 200% neutral bus option. 26

27 echnical Data D E Physical data (continued) Weatherheads (igure 29) Weatherheads are used for service entrance connections to busway. he side opposite of is removable for access to the lugs. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 38. Weatherhead Details opper UL 857 mpere Rating luminum Quantity of Mechanical erminals, Range One #4 (20 mm 2 ) 600 kcmil (300 mm 2 ), wo 1/0 (50 mm 2 ) 250 kcmil (120 mm 2 ) a Minimum Dimensions Minimum Dimensions in Inches (mm) in Inches (mm) opper luminum UL 857 mpere Rating G c P d N e G c P d N e (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (419.1) (762.0) (419.1) (762.0) (1016.0) (762.0) (762.0) (1016.0) (1016.0) a or compression lugs, factory provides provisions only. b 200% neutral. c Denotes quantity of terminals per ground bus. d Denotes quantity of terminals per phase and 100% neutral bus. e Denotes quantity of terminals per 200% neutral bus option (1041.4) (304.8) (Minimum) L of Bo of Busway (609.6) (381.0) a 1.00 ompression and (25.4) Mechanical Lugs Removable Barrier igure 29. Weatherhead Details a (444.5) 27

28 echnical Data D E Physical data (continued) Epansion joints (igure 30) Epansion joints accommodate the epansion and contraction of busbars with respect to the enclosure. hey compensate for the difference in the coefficient of epansion of the aluminum housing and the copper or aluminum busbars. Epansion joints must be used wherever a run of busway crosses an epansion joint of a building. hey should also be installed in the center of etremely long straight runs of busway in which the run does not change planes either horizontally or vertically. One epansion joint is required every 300 feet (91m) for copper or one every 225 feet (68m) for aluminum. he use of epansion joints should be engineered for individual installations. Minimum dimensions are shown in able 39. Phase transpositions (igure 31 and igure 32) Phase transposition fittings are used in applications where a phase rotation is needed due to a change in phasing from the source equipment to the load equipment. Both 90 and 180 rotations are possible. In each case, all conductors are rotated. NNote: ll dimensions are to the centerline of the Pow-R-Bridge. able 39. Epansion Joints UL 857 mpere Rating Dimensions in Inches (mm) u l a (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (419.1) (419.1) (419.1) (419.1) (520.7) (520.7) (622.3) (622.3) (768.4) a Dimensions shown are for three-phase, three-wire and three-phase 100% neutral configurations. Please consult factory for 200% neutral sizes. igure ransposition Dimensions in Inches (mm) (1244.6) (Minimum) (635.0) (304.8) (Minimum) igure ransposition Dimensions in Inches (mm) of Bo (754.1) of Duct igure 30. Epansion Joints 28

29 echnical Data D E Physical data (continued) Single-phase transformer taps (igure 33) Single-phase transformer taps arrangements are used for connections to three single-phase transformers. he bus etensions do not include drilling or lugs (see igure 2 on page 2 for wiring configuration designations) (215.9) + aps (431.8) (215.9) + Pow-R- Bridge Pow-R- Bridge (215.9) + B Phase or Neutral aps (431.8) (215.9) + Pow-R- Bridge (215.9) + Phase or Neutral aps igure 33. hree Single-Phase ransformer aps y (215.9) + y Pow-R- Bridge Phase or Neutral Ground when Required able 40. Single-Phase ransformer aps UL 857 mpere Rating Minimum Dimensions in Inches (mm) u l Y a (101.6) 7.00 (177.8) (101.6) 7.00 (177.8) (101.6) 7.00 (177.8) (101.6) 7.00 (177.8) (114.3) 9.75 (247.7) (127.0) (273.1) (139.7) (298.5) (165.1) (349.3) (196.9) (412.8) (215.9) (444.5) (260.4) (539.8) (165.1) (349.3) (196.9) (412.8) (215.9) (444.5) (260.4) (539.8) a Includes ground tap. hree-phase transformer taps (igure 34) hree-phase transformer taps are used when making connections to a three-phase transformer. he bus etensions do not include drilling or lugs. igure 34. hree-phase ransformer aps able 41. Minimum Dimensions Wire Designation 3W/3WH 3WG/3WHG/ 3WI 4W/4WH Inches mm able 42. B Minimum Dimensions Wire Designation 3W/3WH 3WG/3WHG/ 3WI 4W/4WH Inches mm able 43. Minimum Dimensions Wire Designation aps G B N (1/0) 6.00 (2/0) 7.50 (152.4) 6.00 (190.5) 6.00 (152.4) 6.00 (152.4) (152.4) 50% Housing Ground Inches mm B (381.1) Support Pad 4WG/4WHG/4WI/ 4WNG/4WNHG/4WNI 4WG/4WHG/4WI/ 4WNG/4WNHG/4WNI 50% Integral Ground and 100% Ground 29

30 echnical Data D E Physical data (continued) ransformer throat connections (igure 35 and igure 36) transformer throat is used when making connections to a liquidfilled substation transformer. ll transformer throat connections include fleible connectors between the transformer low voltage spades and Pow-R-Way III busbars. or transformers with drilled flanges, the busway will bolt to the transformer throat instead of using a sealing ring. ransformer ransformer hroat Sealing Ring able 44. ransformer hroat onnections UL 857 mpere Rating luminum Bars Per Phase (660.4) (723.9) (800.1) opper (660.4) (723.9) (800.1) Minimum Dimensions in Inches (mm) LV Spades ront ront Edge of ransformer hroat L 1.75 (44.5) Plus 1/2 Duct Width LV hroat Indicate Number of Holes, Diameter of Holes, and Spacing Between Holes op of ransformer Bushing ransformer ransformer hroat Sealing Ring Side View of ransformer Edge of hroat ollar ront L hickness Edge of ransformer hroat 9.50 (241.3) ransformer ank Wall igure 36. ransformer hroat onnection Detail LV Spade Detail Number and Diameter of Holes igure 35. ransformer hroat 30

31 echnical Data D E Physical data (continued) ransformer flange connections (igure 37 and igure 38) ransformer flange connections are used when making a connection to a dry-type substation transformer. ransformer flange connections include fleible connectors between the transformer low voltage spades and the Pow-R-Way III flange busbars. Hardware is supplied to bolt the flange plate to the transformer enclosure. LL leible Braid (508.0) Protected reducers (igure 39) Protected reducers are used to reduce the ampacity of busway using either a circuit breaker or a fused, non-automatic circuit breaker overprotection device. Both serve as a disconnecting means. he line side of the cubicle is connected to the higher rated busway and the load side is connected to the lower (reduced) rated busway (304.8) (Minimum) igure 39. ircuit Breaker or used Reducer Pow-R-Bridge (304.8) (Minimum) B ircuit Breaker or used Reducer able 45. ircuit Breaker and used Reducer Dimensions igure 37. ransformer lange onnections LV Spades ircuit Breaker Reducer Breaker mperes (463.6) (463.6) (463.6) (463.6) (463.6) (463.6) (666.8) (666.8) (666.8) usible Switch Reducer Inches (mm) Inches (mm) use B Rating B (457.2) (457.2) (457.2) (457.2) (457.2) (457.2) (508.0) (508.0) (508.0) (863.6) (863.6) (863.6) (1073.2) (1073.2) (1073.2) (1219.2) (1219.2) (1219.2) (463.6) (463.6) (463.6) (463.6) (463.6) (463.6) (457.2) (457.2) (457.2) (457.2) (457.2) (457.2) (1073.2) (1371.6) (1524.0) (1524.0) (1524.0) (1524.0) ront View of ransformer hickness Side View of ransformer Non-protected reducers (igure 40) Non-protected reducers are used to reduce the ampacity of the busway without overcurrent devices. Per NE Section , for industrial applications, no overcurrent protection is required where the busway is reduced in size, provided the length of the smaller busway does not etend more than 50 feet (15.2m) and has a current rating of at least one-third of the first upstream overcurrent device. ransformer ank Wall LV Spade Detail Number and Diameter of Holes igure 38. ransformer lange onnection Detail igure 40. Non-used Reducer 31

32 echnical Data D E Physical data (continued) Meter center power takeoffs Meter center power takeoffs (PO) are designed to tap power off the busway and feed tenant meter stacks in high-rise applications. here are two types of power takeoffs, bridge joint and in-line. Both devices are UL Listed. Bridge joint PO he bridge joint PO shown in igure 41 mounts to the right or left side of the busway at a joint between two sections of busway. he bridge joint PO comes with a main circuit breaker or main fusible switch. Bridge joint POs should be ordered with the meter stacks through the Eaton Lincoln, IL, facility. he height of the busway bridge joint must be coordinated to meet local utility/code requirements for minimum/maimum meter socket heights. ll dimensions shown are for reference only showing a typical installation. Wall In-line PO he in-line PO shown in igure 42 is built integral with the busway, having the busway pass through the device. his space-saving design reduces the horizontal wall space by up to inches (609.6 mm). With this device, there is no need to install a separate main device; saving installation time and money. his device is available with a main circuit breaker, main fusible switch, or no main device. In-line POs should be ordered with the busway through the Eaton Greenwood, S, facility. he height of the first busway joint up through the floor must be coordinated to meet local utility/code requirements for minimum/ maimum meter socket heights. he minimum distance from the surface on which the vertical hanger assembly will be installed on (finished floor or preformed curb) to the first joint is inches (406.4 mm). Meter stack may be placed to the left, right, or both sides of the main device. ll dimensions shown are for reference only showing a typical installation. NNote: If 5-high 200 meter stacks are used, it is recommended to increase the bridge joint height from inches (508.0 mm) to inches ( mm). ttention must be given to the minimum/ maimum heights of the meter sockets (311.4) 8.55 (217.2) Vertical Busway In-Line PO Wall 125 Meter Stock.50 (12.7) (343.2) (508.4).61 (15.5) (311.4) 1.93 (49.0) 8.55 (217.2) (911.9) (1778.0) (457.2) Meter enter ront (959.1) (436.1) Horizontal ross Bus Bridge Joint 200 Stack 125 Stack (320.3) (508.0) 5.81 (147.6) (763.5) (635.0) (316.2) (1710.4) (177.8) loor igure 41. Bridge Joint PO (784.35) (635.0) (316.2) (508.4) (314.7) loor igure 42. In-Line PO 32

33 echnical Data D E Physical data (continued) In-line power takeoff Main circuit breaker PO he in-line main circuit breaker PO shown in igure 43 is available with trip ratings from 300 to 1200; using L, M, and N frame circuit breakers. his device is indoor rated and may be weatherized upon request. See able 46 for dimensions and ratings (304.8) Bridge Joint Main fusible switch PO he in-line main fusible switch PO shown in igure 44 is available with 400, 600, and 800 switches; using lass fuses. his device is indoor rated only. he switch handle is mounted in front, eliminating interference with the meter sockets and the need for spacers between the main device and meter stack. It comes with a hinged door, giving easy access to the fuses mounted below the main switch. See able 46 for dimensions and ratings (50.8) (762.0) (508.0) Unprotected PO he in-line PO with no main device shown in igure 45 comes with 1200 horizontal cross bus as standard. his device is intended for use with si meter sockets or less or as local code permits. See able 46 for dimensions and ratings. able 46. In-Line PO Dimensions and Ratings Device Short-ircuit Rating (ki) Dimensions in Inches (mm) Single Bar Per Phase wo Bar Per Phase Main ircuit Breaker LD (508.0) (838.2) HLD (508.0) (838.2) MDL (508.0) (838.2) HMDL (508.0) (838.2) ND (508.0) (838.2) HND (508.0) (838.2) Main usible Switch a (508.0) (838.2) (508.0) (838.2) (508.0) (838.2) No Main Device 1200 b (508.0) (838.2) a lass fuses only. b Rating of horizontal cross bus. igure 43. Main Breaker 5.00 (127.0) (304.8) igure 44. Main usible Switch Bridge Joint L Bridge Joint (508.0) (762.0) (304.8) (381.0) (762.0) igure 45. Unprotected PO 33

34 echnical Data D E Physical data (continued) Busway-connected panelboards Pow-R-Way III busway-connected panelboards save space and installation time by eliminating the need to install a bus plug and cable over to a panelboard. his special enclosure plugs directly on to vertical busway and accepts Eaton PRL1a, PRL2a, and PRL3a main circuit breaker panelboard interiors. he enclosure also accepts inch (711.2 mm) wide standard and EZ trims. he panels can be top or bottom fed and can mount on either side of the busway. Each panel is UL 857 Listed (60.2) op onduit Space (711.2) op View Edge of Busway to Wall 6.00 (152.4) hird Plug-In Opening Up rom Lower Joint NNote: hese panels are not seismic rated. Busway-connected panelboards are sold and shipped through the Eaton regional satellite plants and coordinated with the Eaton busway plant in Greenwood, S. See igure 46. Panelboard spring hangers he specialized spring hanger shown in igure 47 allows the panel to be anchored and supported directly to a wall, and uniquely allows the panel to float with the riser busway. Panelboard spring hangers are sold separately as a busway accessory. Hardware is included to mount the spring hangers to the panelboard enclosure. able 47. Panelboard Enclosure Detail Maimum Bo Size MB Height Busway Joint Height Bo Height Off loor Minimum loor-eiling Height Dimension in Inches (mm) MB rame B D PRL1a and 2a Main ircuit Breaker (1016.0) (1828.8) (584.2) (1193.8) (2616.2) (1320.8) (1828.8) (584.2) (889.0) (2616.2) (1625.6) (1828.8) (584.2) (584.2) (2616.2) J (1930.4) (1828.8) (838.2) (533.4) (2870.2) K (500) (2387.6) (1879.6) (863.6) 4.00 (101.6) (2895.6) K (750) (2387.6) (1828.8) (914.4) 6.00 (152.4) (2946.4) PRL3a Main ircuit Breaker (4/0) (1930.4) (1828.8) (584.2) (279.4) (2616.2) L (1930.4) (1828.8) (584.2) (279.4) (2616.2) B (1930.4) (1828.8) (584.2) (279.4) (2616.2) J (1930.4) (1828.8) (584.2) (279.4) (2616.2) K (500) (2387.6) (1879.6) (863.6) 4.00 (101.6) (2895.6) K (750) (2387.6) (1828.8) (914.4) 6.00 (152.4) (2946.4) L (2387.6) (1828.8) (863.6) 4.00 (101.6) (2895.6) LL (2387.6) (1828.8) (965.2) 8.00 (203.2) (2997.2) L (2387.6) (1828.8) (863.6) 4.00 (101.6) (2895.6) LG (2387.6) (1828.8) (914.4) 6.00 (152.4) (2946.4) B ront View igure 46. Busway-onnected Panelboard Detail igure 47. Panelboard Spring Hangers 34

35 echnical Data D E Physical data (continued) Pow-R-Way III adapters (igure 48 and igure 49) complete line of adapters are available to enable the user to add to eisting old-line Westinghouse or obsolete Eaton s bus runs with the Pow-R-Way III design. he specific Westinghouse product lines are Low Impedance Busway, urrent Limiting Busway, Pow-R-Way, and Pow-R-Way II. he obsolete utler-hammer designs are P2, P3, and P4 Safetybus. See able 48. he adapters allow the incorporation of present day technologies, available in Pow-R-Way III plug-in units, into eisting busway systems. State-of-the-art features such as energy monitoring, transient voltage surge suppression, and coordination/ communication capabilities can all be added to eisting distribution systems without having to upgrade and to replace entire runs of busway. See able 48. Special adapters to competitive busway products are also available. Please contact the Greenwood factory for information. able 48. vailable Pow-R-Way III dapters Busway ypes Brand Minimum dapter Length in Inches (mm) Low impedance busway Westinghouse (1524.0) Low impedance plug-in Westinghouse (1524.0) busway Pow-R-Way busway Westinghouse/Eaton (914.4) Pow-R-Way II busway Westinghouse/Eaton (914.4) P2 Safetybus Eaton (914.4) P3 Safetybus Eaton (914.4) P4 Safetybus Eaton (914.4) ompetitive busway ontact factory (914.4) dapter POW R WY III Eisting POW R WY igure 48. Pow-R-Way III to Pow-R-Way dapter dapter POW R WY III Eisting P Busway igure 49. Pow-R-Way III to P dapter 35

36 echnical Data D E Physical data (continued) Wall/floor flanges (igure 50) Wall and floor flanges are used to fit around the busway and close off the opening made to allow the bus run to pass through a floor or wall. Wall and floor flanges are for cosmetic purposes only and do not provide any type of vapor or fire barrier. Busway Height Roof flange (igure 51) roof flange should always be used when outdoor busway penetrates a roof. Wall End closures (igure 52) End closures terminate a bus run and can be used to close either the right or left end (see igure 2 on page 2 for wiring conductor configurations). Wall/loor lange 2.00 (50.8) Busway Width able 49. End losures UL 857 mpere Rating Dimensions in Inches (mm) u l (130.3) (130.3) (130.3) (130.3) (146.1) (158.8) (171.5) (197.4) (229.1) (248.4) (293.4) (419.6) (482.9) (521.7) (611.6) 2.00 (50.8) igure 50. Wall/loor lange lange Bell (minimum) (260.3) 7.00 (177.8) 2.00 (Rec.) (50.8) of Joint 2.50 (63.5) (ll 4 Sides) Roof Maimum Roof Slope with Standard lange is 2.00 (50.8) per oot (304.8 mm) able 50. End losure Dimensions Dimensions in Inches (mm) Description B 3WH, 3WG, 3WHG, 3WI, 4WH, 4WG, 4WHG, 4WI 5.00 (127.0) 4WNH, 4WNG, 4WNI, 4WNHG 5.50 (139.7) NNote: End closure etends 0.44 inches (11.2 mm) beyond the centerline of the removed Pow-R-Bridge. igure 51. Roof lange.44 (11.2) 6.25 (158.8) Indoor 7.38 (187.5) Outdoor B igure 52. End losure with Pow-R-Bridge Removed 36

37 echnical Data D E Physical data (continued) Horizontal hangers 1 Bar Per Phase Only B One hanger is provided for every 10 feet (3m) of horizontally mounted busway. he type of hanger supplied is determined by the specific mounting requirements of the busway. (or hook hangers and angle hangers, see igure 53 and igure 54.) Drop rods 0.50-inch (12.7 mm) diameter are not included and must be furnished by the installer. Drop rods 0.75-inch (19.1 mm) diameter are required for seismic applications. Duct Width latwise Duct Width Duct Height Edgewise igure 53. Hook Hangers Non-Seismic Only able 51. latwise Hook Hanger UL 857 mpere Rating Dimensions in Inches (mm) u l Duct Width B (120.7) 5.12 (130.0) (120.7) 5.12 (130.0) (120.7) 5.12 (130.0) (120.7) 5.12 (130.0) (136.7) 5.75 (146.1) (149.4) 6.25 (158.8) (162.1) 6.75 (171.5) (187.5) 7.75 (196.9) (219.5) 9.03 (229.4) (238.8) 9.78 (248.4) (283.7) (294.1) able 52. Edgewise Hook Hanger onductor onfiguration Dimensions in Inches (mm) Duct Height Duct Width B 3WH/4WH/3WG/3WHG/4WG/4WHG ( ) ( ) 8.40 (213.3) 4.81 (122.2) 3WI/4WI ( ) ( ) (335.0) 4.81 (122.2) 4WNH/4WNG ( ) ( ) 8.40 (213.3) 5.35 (135.9) 4WNHG/4WNI ( ) ( ) (335.0) 5.35 (135.9) able 53. latwise ngle Hanger UL 857 mpere Rating u l onductor Bars Per Phase Dimensions in Inches (mm) Busway Width (120.7) 9.00 (228.6) (120.7) 9.00 (228.6) (120.7) 9.00 (228.6) (120.7) 9.00 (228.6) (136.7) 9.63 (244.6) (149.4) (257.0) (162.1) (270.0) (187.5) (295.4) (219.5) (327.2) (238.8) (345.9) (283.7) (392.2) (410.0) (517.9) (473.5) (581.2) (512.1) (619.5) (602.0) (711.2) able 54. Edgewise ngle Hanger Dimensions in Inches (mm) onductor onfiguration Duct Height 3WH/4WH/3WG/3WHG/ ( ) 9.00 (228.6) 4WG/4WHG/3WI/4WI 4WNH/4WNG/4WNHG/4WNI ( ) 9.36 (237.7) NNote: ngle hangers must be used for seismic applications..7 (19 igure 54. ngle Hangers latwise.75 1 Bar Per Phase Edgewise 2 Bars Per Phase.75 37