Explosion-Proof Junction Unilets J-1 Features: Junction Boxes Outlet Boxes Compliance Data:, Groups B, C, D; Class I Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3, weatherproof EEMAC Type 3R, 7BCD, 9EFG
J-2 October 2008 Explosion-Proof Junction Unilets Page Description GR GRUE-200 ELBY GRJS ER ELBD GRU GRF GRSS GRJ CPU EXB GUB/DER 3-4 GR Junction Unilets 5 Covers and Canopies 4 GRF Junction Unilets 5 Covers and Canopies 6 GRUE-100 Universal Junction Boxes 7 GRUE-200 Universal Junction Boxes 8 GRSS Conduit Outlet Boxes 9 ELBY Capped Elbows 10 GRJ Junction Unilets 11 Covers 11 GRJS Junction Unilets 12 CPU Universal Outlet Boxes 13 ER Junction Unilet 14 EXB Cast Iron Junction Boxes 15 Ordering Information, Tapping and Drilling Information 16 ELBD 90 Pulling Unilets 17-19 DER and GUB Junction Unilets 18 Ordering Information 19 Covers 20 GUBM Instrument Unilets 21, 22 Dimensions - DER and GUB 23 GRU Conduit Outlet Boxes with Union Hubs 23 GRUT and GRUSE Union Hubs, Dimensions 24 Wiring Capability - Conduit Outlet Boxes October 2008
Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 J-3 GR Junction Unilets, Malleable or Copper-Free* Aluminum: Explosion-Proof, Dust-Ignition-Proof, and Weather Resistant (Raintight) Malleable Aluminum Iron Catalogue Cover Form Illustration Cat. No. Number Description Opening Number GRE50 GRE50-A 1/2 3-3/8 1 GRE75 GRE75-A 3/4 3-3/8 1 GRE100 GRE100-A 1 3-3/8 1 GRE GRE125 GRE125-A 1-1/4 3-15/16 2 GRE150 GRE150-A 1-1/2 4-7/8 3 GRC50 GRC50-A 1/2 3-3/8 1 GRC75 GRC75-A 3/4 3-3/8 1 GRC100 GRC100-A 1 3-3/8 1 GRC125 GRC125-A GRC 1-1/4 3-15/16 2 GRC150 GRC150-A 1-1/2 4-7/8 3 GRC200 GRC200-A 2 4-7/8 3 GRL50 GRL50-A 1/2 3-3/8 1 GRL75 GRL75-A 3/4 3-3/8 1 GRL100 GRL100-A 1 3-3/8 1 GRL125 GRL125-A GRL 1-1/4 3-15/16 2 GRL150 GRL150-A 1-1/2 4-7/8 3 GRL200 GRL200-A 2 4-7/8 3 GRLB50 GRLB50-A 1/2 3-3/8 1 GRLB75 GRLB75-A 3/4 3-3/8 1 GRLB100 GRLB100-A 1 3-3/8 1 GRLB125 GRLB125-A GRLB 1-1/4 3-15/16 2 GRLB150 GRLB150-A 1-1/2 4-7/8 3 GRLB200 GRLB200-A 2 4-7/8 3 GRN50 GRN50-A 1/2 3-3/8 1 GRN75 GRN75-A 3/4 3-3/8 1 GRN100 GRN100-A GRN 1 3-3/8 1 GRN125 GRN125-A 1-1/4 3-15/16 2 GRN150 GRN150-A 1-1/2 4-7/8 3 GRT50 GRT50-A 1/2 3-3/8 1 GRT75 GRT75-A 3/4 3-3/8 1 GRT100 GRT100-A 1 3-3/8 1 GRT125 GRT125-A GRT 1-1/4 3-15/16 2 GRT150 GRT150-A 1-1/2 4-7/8 3 GRT200 GRT200-A 2 4-7/8 3 GRX50 GRX50-A 1/2 3-3/8 1 GRX75 GRX75-A 3/4 3-3/8 1 GRX100 GRX100-A 1 3-3/8 1 GRX125 GRX125-A GRX 1-1/4 3-15/16 2 GRX150 GRX150-A 1-1/2 4-7/8 3 GRX200 GRX200-A 2 4-7/8 3 NOTE: All GR boxes above are supplied with O-ring. See page 5 for other covers available. If no covers are desired, specify catalogue number with suffix LC, and deduct price of cover. Form numbers indicate sizes of unilets which take correspondingly classified covers.
J-4 Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 GR and GRF Junction Unilets, Malleable or Copper-Free** Aluminum Explosion-Proof, Dust-Ignition-Proof, and Weather Resistant (Raintight) Catalogue Number Conduit Cover Form Malleable Iron Aluminum Description Size Opening Number GR Junction Unilets Furnished with externally threaded surface cover GRCA50 GRCA50A 1/2 3-3/8 1 GRCA75 GRCA75A 3/4 3-3/8 1 GRCA GRLA50 GRLA50A 1/2 3-3/8 1 GRLA75 GRLA75A 3/4 3-3/8 1 GRLA GRTA50 GRTA50A 1/2 3-3/8 1 GRTA75 GRTA75A 3/4 3-3/8 1 NOTE: All above are supplied with rear hub. GRTA Hub Form Sizes A B C D E 1 1/2 3-3/4 2-3/8 3-1/16 21/32 11/16 1 3/4 3-3/4 2-3/8 3-1/16 21/32 11/16 1 1 3-3/4 2-3/8 3-1/16 15/16 13/16 2 1-1/4 4-1/2 2-11/16 3-5/16 1-5/32 7/8 3 1-1/2 5-3/4 3-3/4 4-3/8 1-3/8 1-5/16 Catalogue Number Conduit Cover Form Malleable Iron Aluminum Description Size Opening Number Furnished with externally threaded surface cover GRFC50 GRFC50A 1/2 3-3/8 1 GRFC75 GRFC75A GRFC 3/4 3-3/8 1 GRFC100 GRFC100A 1 3-3/8 1 GRFL50 GRFL50A 1/2 3-3/8 1 GRFL75 GRFL75A GRFL 3/4 3-3/8 1 GRFL100 GRFL100A 1 3-3/8 1 GRFT50 GRFT50A 1/2 3-3/8 1 GRFT75 GRFT75A GRFT 3/4 3-3/8 1 GRFT100 GRFT100A 1 3-3/8 1 GRFX50 GRFX50A 1/2 3-3/8 1 GRFX75 GRFX75A GRFX 3/4 3-3/8 1 GRFX100 GRFX100A 1 3-3/8 1 NOTE: All GR boxes above are supplied with O-ring. GRF Flanged Junction Unilets GRF junction unilets are similar in design and size to GR junction unilets, except they are supplied with a mounting flange. The flanged surface has four 3/8" holes. Unilets are furnished with externally threaded surface cover and threaded hubs. When used with canopy or hub style covers listed on page 8, they are particularly well suited for hanging pendant lighting fixtures. Hub Size A B C D E F 1/2, 3/4 and 1 3-3/4 2-5/16 5/8 5-3/8 3-3/8 3/8 See page 5 for other covers available. If no covers are desired, specify catalogue number with suffix LC, and deduct price of cover. Form numbers indicate sizes of unilets which take covers correspondingly classified.
Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 Covers for GR and GRF Conduit Outlet Boxes Covers and O-rings fit bodies with corresponding form numbers. J-5 Cover Fixture Catalogue Number Cover Opening Stem Size Form Type (Inches) (Inches) No. Malleable Iron Aluminum Surface 3.38 1 GRK-1M GRK-1 3.94 2 GRK-2M GRK-2 4.88 3 GRK-3M GRK-3 Sealing 3.38 1 GRK-1SC GRK-1SC-A 3.94 2 GRK-2SC GRK-2SC-A 4.88 3 GRK-3SC GRK-3SC-A Dome 2" deep 3.38 1 GRK-1DC Union Hub 3.38 3/4 1 GRK-75U GRK-75UA Hub 3.38 1/2 1 GRK-50 GRK-50-A 3.38 3/4 1 GRK-75 GRK-75-A Canopy 3.38 1/2 1 GRK-50C Length 3.38 3/4 1 GRK-75C 4 1/2" 3.38 1 1 GRK-100C O-Rings Neoprene Provide Raintight fit when used on 1 GRG-1 following series: GR (Forms 1, 2 and 3), 2 GRG-2 GRF (Form 1), GRH and GRU (Form 1). 3 GRG-3 GRTB Terminal Strip For use in standard GR series boxes Weidmuller type MK terminal Block* with wire range of #22-#12 AWG. Mounts on 2 predrilled and tapped standard holes (furnished in internal GR boxes). 6 position terminal block kit 1+2 GRTB6-12 6 position terminal block kit 3 GRTB6-3 12 position terminal block kit 3 GRTB12-3 *Terminal block is UL Listed for 300 volts, 25 ampere. CSA certified for 300 volts, 13 ampere. Form numbers designate cover and matching body sizes.
J-6 Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 December 2004 GRUE-100 Universal Junction Box: Explosion-Proof and Dust-Ignition-Proof Unilets for 1/2", 3/4" and 1" threaded metal conduit. Hub Hub Catalogue Number Size Configuration Ferrous Alloy Aluminum GRUE-100 Universal Junction Box Furnished with internally threaded surface cover, five threaded hubs and three close-up plugs. 1/2 GRUE-50 GRUE-50-A 3/4 XB GRUE-75 GRUE-75-A 1 GRUE-100 GRUE-100-A GRUE Sealing Cover Sealing cover for GRUE-100 and GRUE-100N junction boxes listed above. GRUC-SC-F GRUC-SC To order GRUE-100 and GRUE-100N complete with sealing cover add suffix -SC. GRUE-100/GRUE-100N Dimensions: Hub Size 1/2 3/4 1 H 3/4 3/4 7/8 1.9cm 1.9cm 2.2cm To order GRUE Universal Junction Boxes for 1-1/4", 1-1/2" and 2", see next page. December 2004
Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 J-7 GRUE-200 Universal Junction Box: Explosion-Proof, Dust-Ignition-Proof Unilets for 1 1/4", 1 1/2" and 2" threaded metal conduit. Hub Hub Catalogue Number Size Configuration Ferrous Alloy Aluminum GRUE-200 Universal Junction Box Furnished with internally threaded surface cover. Entries are supplied as listed. 1-1/4 GRUE-125C GRUE-125C-A 1-1/2 C GRUE-150C GRUE-150C-A 2 GRUE-200C GRUE-200C-A 1-1/4 GRUE-125CB GRUE-125CB-A 1-1/2 CB GRUE-150CB GRUE-150CB-A 2 GRUE-200CB GRUE-200CB-A 1-1/4 GRUE-125E GRUE-125E-A 1-1/2 E GRUE-150E GRUE-150E-A 2 GRUE-200E GRUE-200E-A 1-1/4 GRUE-125L GRUE-125L-A 1-1/2 L GRUE-150L GRUE-150L-A 2 GRUE-200L GRUE-200L-A 1-1/4 GRUE-125LB GRUE-125LB-A 1-1/2 LB GRUE-150LB GRUE-150LB-A 2 GRUE-200LB GRUE-200LB-A 1-1/4 GRUE-125T GRUE-125T-A 1-1/2 T GRUE-150T GRUE-150T-A 2 GRUE-200T GRUE-200T-A 1-1/4 GRUE-125TB GRUE-125TB-A 1-1/2 TB GRUE-150TB GRUE-150TB-A 2 GRUE-200TB GRUE-200TB-A 1-1/4 GRUE-125X GRUE-125X-A 1-1/2 X GRUE-150X GRUE-150X-A 2 GRUE-200X GRUE-200X-A 1-1/4 GRUE-125XB GRUE-125XB-A 1-1/2 XB GRUE-150XB GRUE-150XB-A 2 GRUE-200XB GRUE-200XB-A
J-8 Groups B, C, D; Class I, Zone 1 and 2, IIB + H 2 T6, Class III, Enclosure 3 GRSS Conduit Outlet Boxes with Multiple Hubs, Explosion-Proof, Dust-Ignition-Proof UNILETS for use with threaded metal conduit. Furnished with internal ground screw. Box Conduit Cover Opening Catalogue Number Type Size (In.) (Inches) Hubs Plugs Aluminum GRSS Outlet Box with Cover Internally threaded aluminum bodies with externally threaded aluminum form 1 covers. Has 7 hubs; 2 on each of the sides, 1 on the top, 1 on the bottom and 1 on the centre in the back. Furnished with 4 close-up plugs 1/2 3.38 7 4 GRSS50 GRSS 3/4 3.38 7 4 GRSS75 1 3.38 7 4 GRSS100 GRSSA Outlet Box with Cover Internally threaded aluminum bodies with externally threaded aluminum form 1 covers. Has 13 hubs; 2 on each side, 2 each on top and bottom and 5 in the back. Furnished with 5 close-up plugs 1/2 3.38 13 5 GRSSA50 GRSS 3/4 3.38 13 5 GRSSA75 Dimensions *In Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure.
Groups B, C, D; Class I, Zone 1 and 2, IIIB + H 2 T6, Class III, Enclosure 3 J-9 ELBY Capped Elbows for Junction Unilets: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant Capped Elbows with Threaded Cover Class I, Groups B, C & D; Class II, Groups E, F & G; and Class III; CSA Encl.3. Pulling elbows have been designed for wiring in hazardous locations. Compact, they have an externally threaded cover opening. The 45 angle of the opening to the large wiring chamber allows conductors to be pulled through the unilet. Size A B C D 1/2 1-7/16 2-7/8 2-17/32 1-7/16 3/4 1-7/16 3 2-5/8 1-7/16 1 1-7/8 3-5/8 2-3/8 1-3/4 1-1/4 2-15/16 4-1/2 3-3/16 2-1/8 Catalogue Number Size (inches) Aluminum Ferrous Alloy 1/2 ELBY-50A ELBY-50 3/4 ELBY-75A ELBY-75 1 ELBY-100-A ELBY-100 1-1/4 ELBY-125-A ELBY-125 *Nominal diameter of unilet opening. Cadmium finish. Copper free (Max. 4/10 of 1% copper content).
J-10 Groups C, D; Class I, Zone 1 and 2, IIB T6, Class III, Enclosure 3 GRJ Junction Unilets: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant (Raintight) Applications The Appleton GRJ unilet has been designed to meet the demand for a very small round unilet for general wiring purposes in hazardous areas. Features Bodies have external threads around cover opening, and the covers are threaded internally. Unilet opening is 2-1/8". Hub Size A B C D E F 1/2 and 2-7/8 2-5/16 1-15/16 2-1/4 3-15/16 11/16 3/4 Catalogue STD. WT. LBS. Illustration Number Description PKG. Per 100 Furnished with internally threaded surface cover GRJC50 1/2 5 153 GRJC75 GRJC 3/4 5 150 GRJCA50 1/2 5 173 GRJCA GRJCA75 3/4 5 160 Includes a rear hub. GRJEA50 1/2 5 160 GRJEA GRJEA75 3/4 5 144 Includes a rear hub. GRJL50 1/2 5 156 GRJL GRJL75 3/4 5 150 GRJT50 1/2 5 178 GRJT GRJT75 3/4 5 175 GRJTA50 1/2 5 180 GRJTA GRJTA75 3/4 5 180 Includes a rear hub. GRJX50 1/2 5 192 GRJX GRJX75 3/4 5 200 Cadmium Finish. See page 11 for other covers available.
December 2006 Groups C, D; Class I, Zone 1 and 2, IIB T6, Class III, Enclosure 3 J-11 GRJ Covers and GRJS Universal Unilets and Covers: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant (Raintight) Catalogue STD. WT. LBS. Illustration Number Description PKG. Per 100 Covers for GRJ Junction Unilets Furnished with internal threads. GRJK-S Surface Cover 5 45 GRJK-SC Sealing Cover 5 70 GRJS Universal Junction Unilets and Covers Applications The Appleton GRJS Universal Junction Unilet is ideal for use in hazardous locations. Features The Unilet has five threaded hubs, one in each of four sides and one in bottom. Three close-up plugs are furnished. Unilet opening is 2-9/16". Hub Size A B C D E 1/2, 3/4 and 3-1/16 2-5/8 3-3/4 3-3/4 1 1 Catalogue STD. WT. LBS. Illustration Number Description PKG. Per 100 GRJS Universal Junction Unilets Furnished with externally threaded blank surface cover and three close-up plugs. GRJS50 1/2 5 255 GRJS75 3/4 5 250 GRJS100 1 5 234 Supplied with O-Ring. Add suffix -A for aluminum Covers for GRJS Universal Junction Unilets Furnished with internal threads. GRJSK Surface Cover 5 30 GRJSK-SC Sealing Cover 5 38 GRJSK-50 1/2" Hub Cover 5 70 December 2006
J-12 Groups C, D; Class I, Zone 1 and 2, IIB T6, Class III, Enclosure 3 CPU Universal Outlet Box: Explosion-Proof and Dust-Ignition-Proof CPU Universal Outlet Box Dimensions: Fixture Description Hub Size Stem Size Aluminum* Ferrous Alloy CPU Box with blank cover Furnished with cover screws, four 3/4" universal hubs, four 3/4" to 1/2" reducers and three 1/2" close-up plugs. 1/2" or 3/4" CPU20A CPU20 To order with CB205 connection block installed add suffix -CB. CPU Box with hub cover (Supports lbs 112.5 kg) Furnished with hub cover, screws, four 3/4" universal hubs, four 3/4" to 1/2" reducers and three 1/2" close-up plugs. 1/2" or 3/4" 1/2" CPU20-50A CPU20-50 1/2" or 3/4" 3/4" CPU20-75A CPU20-75 To order with CB205 connection block installed add suffix -CB. CPU covers only (Form 20) Furnished with fastening screws. Blank CPSK20B-A CPSK20B Hub 1/2" CPSK20-50A CPSK20-50 Hub 3/4" CPSK20-75A CPSK20-75 CPU replacement connection block With fastening strap and two mounting screws. 5 Wire - 20 Ampere - 300 Volt CB205 To order with box - see above. 45 2.88" (7.38cm) 4.81" 12.2cm) 1/4 20 Thd. 4 Holes.75 (1.9 cm) 10-24 Ground Screw 5.56" (14.1 cm) 10-24 Thd. 2 Holes (on boxes with suffix CB only) 4.63 11.8 cm) 3.75 (9.5 cm) 1.84 4.6 cm) 7.38" (18.7 cm) 6.38" (16.2 cm) 5/16" Dia. 2 Holes.31 (.78 cm) *Copper free (4/10 of 1%) 2.00 (5.1 cm)
Groups D; Class I, Zone 1 and 2, IIB T6, Class III, Enclosure 3 J-13 ER Junction Unilets: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant (Raintight) Applications ER Junction Unilets are ideally suited for installations where space is restricted. Features Their rectangular shape provides a junction unilet as narrow as practical, yet with ample wiring space. A ground surface contact between unilet and cover insures a flame tight joint. Hub Size A B C D E F G 1/2 3-11/16 1-1/2 1-13/16 5 2-7/16 2-1/8 9/16 3/4 1 1-3/4 2 5-7/16 2-11/16 2-7/16 11/16 Catalogue STD. WT. LBS. Illustration Number Description PKG. Per 100 Furnished with blank cover. ERC50 1/2 10 158 ERC75 ERC 3/4 25 200 ERLB50 1/2 10 155 ERLB75 ERLB 3/4 10 200 ERLL50 1/2 10 158 ERLL75 ERLL 3/4 25 205 ERLR50 1/2 10 160 ERLR75 ERLR 3/4 10 160 ERT50 1/2 10 168 ERT75 ERT 3/4 10 210 ERTB50 1/2 25 175 ERTB75 ERTB 3/4 25 210
J-14 Group D Groups E, F, G Class III EXB Cast Iron Junction Boxes: Explosionproof, Dust-Ignitionproof, Integrally Cast Mounting Feet Drilled and tapped openings 1/2 thru 6 as specified. Features: EXB Series (Cast Iron) Wide selection of sizes and locations for drilled and tapped openings. Cast iron box and cover with hot dip galvanized finish. Extra wide, accurately ground mating surfaces with closely spaced stainless steel hex-head cap screws assure a flame-tight joint. Provided with mounting lugs. Standard Materials: EXB: cast iron bodies and covers. Standard Finish: EXB cast iron bodies and covers: hot-dip galvanized. Compliances: UL Standard 886. CSA approved. Factory Installed Options Description Mounting Plate Hinges Suffix WYM* HNG * Refer to page C-14 for Mounting Plate details. Nom. Inside Approx. Max. Dimensions Side Wall Conduit (Inches) Thickness Size Catalogue LxWxD in Inches (In.) Number 4x4x4 0.47 2 EXB040404 6x6x4 0.63 2 EXB060604 6x6x6 0.63 3-1/2 EXB060606 8x6x4 0.63 2 EXB080604 8x6x6 0.63 3-1/2 EXB080606 8x8x4 0.63 2 EXB080804 8x8x6 0.63 3-1/2 EXB080806 8x8x8 0.63 5 EXB080808 10x8x4 0.63 2 EXB100804 10x8x6 0.63 3-1/2 EXB100806 10x8x8 0.63 5 EXB100808 10x10x4 0.63 2 EXB101004 10x10x6 0.63 3-1/2 EXB101006 10x10x8 0.63 5 EXB101008 12x8x4 0.63 2 EXB120804 12x12x4 0.69 2 EXB121204 12x12x6 0.69 3-1/2 EXB121206 12x12x8 0.69 5 EXB121208 12x12x10 0.69 6 EXB121210 12x12x12 0.69 6 EXB121212 18x12x4 0.81 2 EXB181204 Nom. Inside Approx. Max. Dimensions Side Wall Conduit in Inches Thickness Size Catalogue LxWxD in Inches (In.) Number 18x12x6 0.81 3-1/2 EXB181206 18x12x8 0.81 5 EXB181208 18x12x12 0.81 6 EXB181212 18x18x6 0.88 3-1/2 EXB181806 18x18x8 0.88 5 EXB181808 18x18x12 0.88 6 EXB181812 24x12x8 0.81 5 EXB241208 24x12x10 0.81 6 EXB241210 24x12x12 0.81 6 EXB241212 24x18x6 0.94 3 EXB241806 24x18x8 0.94 6 EXB241808 24x18x10 0.94 6 EXB241810 24x18x12 0.94 6 EXB241812 24x24x8 0.94 5 EXB242408 24x24x12 0.94 6 EXB242412 30x12x10 1.06 6 EXB301210 30x24x8 1.06 5 EXB302408 30x24x10 1.06 6 EXB302410 30x24x12 1.06 6 EXB302412 See EXB Ordering Information page for drilling and tapping options. Hinges (Malleable Iron, Hot Dip Galvanized) EXB Box Size Catalogue No. of Hinges Number Per Set Up to 12" x 12" AHNG-22G 2 Up to 24" x 18" AHNG-23G 2 Up to 30" x 12" AHNG-24G 2 Larger than 30" x 12" AHNG-34G 3
J-15 Ordering Information: EXB Boxes: Blank Bodies for Drilling and Tapping Determine catalogue number as follows: (1) select EXB junction box catalogue number; (2) select Conduit Opening Arrangement Diagram number; and (3) select symbols that represent conduit opening sizes from Symbol Table. Where no opening is required, the symbol 0 must be inserted. Add Suffix for other optional features. The various divisions of the complete catalogue number should be separated by dashes. Example: The junction box selected is EXB181208 with steel mounting plate and the Conduit Opening Arrangement is diagram #1. Opening a is to be 1/2"; b, 1-1/4"; c, no opening needed; and d, 1-1/2". In this example, the complete catalogue number is: EXB181208 1 AD0E WYM-1812-1 Standard Conduit Opening Arrangement Diagrams Opening a is always TOP of box. Diag. #1 Diag. #2 Minimum Recommended Spacing Between Conduit Openings Allowance made for clearance over bushings. When unions or seals are used, additional space must be allowed. Table shows minimum distances between conduit-opening centerlines in various size combinations. For example, if 1-1/2" and 3/4" openings are to be drilled and tapped into one side of box, the minimum spacing between centerlines would be 2.13". Conduit Minimum space between conduit opening centerlines, Inches Size (Inches) 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 1/2 1.25 3/4 1.38 1.50 1 1.56 1.69 1.88 1-1/4 1.88 2.00 2.19 2.44 1-1/2 2.00 2.13 2.31 2.63 2.75 2 2.38 2.50 2.69 2.94 3.13 3.44 2-1/2 2.50 2.63 2.81 3.13 3.25 3.63 3.75 3 2.88 3.00 3.19 3.44 3.63 3.94 4.13 4.44 3-1/2 3.13 3.25 3.44 3.75 3.88 4.25 4.38 4.75 5.00 4 3.44 3.56 3.75 4.05 4.19 4.56 4.69 5.06 5.31 5.63 Diameters of Bushings, Unions, Conduit and Seals in Inches Conduit Diameters of Fittings for 1/2" thru 4" Conduit Size (Inches) 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 BBU Bushing 1.06 1.31 1.56 1.94 2.19 2.69 3.19 3.88 4.38 4.88 BU Bushing 1.13 1.25 1.63 2.06 2.31 2.94 3.25 3.88 4.56 5.06 UNY/UNF (R) Union 1.50 1.75 2.00 2.81 3.06 3.75 4.94 5.44 5.94 6.50 Conduit.88 1.06 1.38 1.69 1.94 2.38 2.88 3.50 4.00 4.50 EYM-EYF Seals T.R. 1.06 1.19 1.38 1.75 2.06 2.31 2.69 3.13 3.44 3.69 T.R. is Turning Radius. Diag. #3 Diag. #4 Symbol Table Drilling and Tapping (Five Threads Min.) Size (in) Symbol Size (in) Symbol All Conduit Openings will be located in centerline of walls and evenly spaced unless otherwise specified. If a Standard Conduit Opening Arrangement is not suitable for the application,or when openings are to be more accurately spaced, submit drill and tap schedule on page J-18. Blank 0 2 F 1/2 A 2-1/2 G 3/4 B 3 H 1 C 3-1/2 J 1-1/4 D 4 K 1-1/2 E 5 L 6 M
J-16 Groups D; Class I, Zone 1 and 2, IIA T6, Class III ELBD 90 Pulling Unilets: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant Class I, Group D; Class II, Groups E, F and G and Class III Applications Appleton ELBD Pulling Units have been designed for hazardous area wiring of motors, panel boards, circuit breakers and other applications. Features The problems of bending stiff lead covered cables or large conductors have been solved the angle of the opening to the large wiring chamber allows heavy conductors to be pulled through the ELBD Pulling Unilet with ease and no damage to the insulation of the cable. An all new exclusive Appleton design has been incorporated into the 2-1/2" through 4" sizes. Rollers have been built into each end of the wiring chamber located so that any resistance caused by bending forces when the cable is pulled through the Unilet are eliminated. Large conductor cables have an unrestricted movement with no damage to insulation. Appleton ELBD Unilets feature a reversible dome cover which is bolted to the unilet body with extra hexagon bolts having a screwdriver slot. Both the cover and the unilet body surface are ground to meet the requirements for hazardous locations. All hubs are chamfered. Standard Materials ELBD Pulling Unilets: made of malleable iron with cadmium finish. Cover Roller Roller ELBD Pulling Unilet showing cover removed. Note exclusive roller feature in each end of wiring chamber. ELBD Pulling Elbow being used to house conductors that supply power to an electrical motor within a hazardous area. Dimensions of ELBD 90 pulling unilets Catalogue Number Type and size (inches) Aluminum Ferrous Alloy 1/2 ELBD-50-A ELBD-50 3/4 ELBD-75-A ELBD-75 1 ELBD-100-A ELBD-100 1-1/4 ELBD-125-A ELBD-125 1-1/2 ELBD-150-A ELBD-150 2 ELBD-200-A ELBD-200 2-1/2 Patented Roller Feature ELBD-250-A ELBD-250 3 Listings in Bold Type ELBD-300-A ELBD-300 3-1/2 ELBD-350-A ELBD-350 4 ELBD-400-A ELBD-400 Catalogue Hub Number Size A B C D E F ELBD-50 1/2 5-1/16 2-19/32 4-1/2 1-1/16 4-11/16 2-11/16 ELBD-75 3/4 5-1/16 2-19/32 4-1/2 1-1/16 4-11/16 2-11/16 ELBD-100 1 7-7/8 3-7/16 5 1-3/4 7-1/2 3-15/16 ELBD-125 1-1/4 7-7/8 3-7/16 5 1-3/4 7-1/2 3-15/16 ELBD-150 1-1/2 10-5/8 4-13/16 6-3/4 2-9/16 10-11/16 4-15/16 ELBD-200 2 10-5/8 4-13/16 6-3/4 2-9/16 10-11/16 4-15/16 ELBD-250 2-1/2 14-11/16 6-19/32 9-1/4 3-3/4 13-13/16 6-11/16 ELBD-300 3 14-11/16 6-19/32 9-1/4 3-3/4 13-13/16 6-11/16 ELBD-350 3-1/2 28-1/4 7-1/2 12-3/4 4-5/8 27-9/16 7-3/8 ELBD-400 4 28-1/4 7-1/2 12-3/4 4-5/8 27-9/16 7-3/8
Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 J-17 DER and GUB Junction Unilets: Explosion-Proof, Dust-Ignition-Proof and Watertight Furnished with surface cover and mounting lugs. Catalogue Number Outside Dimensions Cover Dia. Ferrous Alloy Aluminum** DER1C DER1C DER1CA 5-1/8 x 5-1/8 x 4-1/16 3-7/8 GUB1C GUB1CA 7 x 7 x 6-1/2 5-3/8 GUB2C GUB2CA 10-5/8 x 9-1/4 x 6-3/4 7-3/16 GUB3C GUB3CA 12-7/16 x 12-7/16 x 8-7/16 9-13/16 GUB2C GUB1C Catalogue Maximum size and number of entries supplied on any one side Number 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 Drilled and Tapped - With clearance for conduit seals DER1C 3 2 2 1 GUB1C 4 4 4 2 2 1 GUB2C 4 4 4 3 3 2 2 GUB3C 4 4 4 3 3 2 2 With UNY Male Unions DER1C 3 2 2 1 GUB1C 3 3 4 2 2 GUB2C 4 4 4 3 3 2 1 GUB3C 4 4 4 3 3 2 1 Maximum entry in back GUB1C - 2"; GUB2C - 2"; GUB3C - 6" GUB3C To order DER1C or DER1CA without mounting lugs add the suffix LF to the catalogue number. **Copper free aluminum - Maximum copper content 4/10 of 1%. *Requires pad. Available on special order from factory only.
J-18 Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 DER and GUB Junction Unilets with Surface Cover: Explosion-Proof, Dust-Ignition-Proof and Watertight Determining Catalogue Numbers To determine the catalogue number of Unilets with entries, the following information should be shown: 1) Unilet catalogue number from listings on page 18. 2) Sketch number of hub arrangement selected from the illustration below. Example GUB2C Unilet is required with threaded conduit entries and unions. The arrangement of entries is per sketch #16. A is to be 2" drilled and tapped entry; B 1-1/4", C Blank (no entry); D 2"; E Blank; F 1" and J Blank. The catalogue number is: GUB2C-16-64X634X. Unions are required at B (1-1/4") and D (2"). Order UNY male unions from section I, page 5 (UNY125NR for B; UNY200NR for D). 3) Entry symbols taken from the table shown below. Start from the left (at Hub A ) on the top of the unilet and continue in rotation clockwise around its body. Where no entry is required, the symbol X should be inserted. The three various divisions of the catalogue number should be separated by dashes. Conduit Entry Symbols Drilling and Tapped or Threaded Hubs Union Hubs (GUB4 only) Size Symbol Size Symbol Size Symbol Size Symbol 1/2 1 2 6 1/2 1E 2 6E 3/4 2 2-1/2 7 3/4 2E 2-1/2 7E 1 3 3 8 1 3E 3 8E 1-1/4 4 3-1/2 9 1-1/4 4E 3-1/2 9E 1-1/2 5 4 10 1-1/2 5E 4 10E 1 2 3 4 5 6 7 8 9 10 11 A A A A A A A A A A A B B D B J J J B J B D J B J B C C C C C C B C B E D 12 13 14 15 16 17 18 19 20 21 22 A A A B A B A A B A B A B A B A B A E F B H C H C M C B J B J J L D J J E K E D E C G D G D J F C C D C D C D F E F E H G C C D B C 23 24 25 26 27 28 29 30 31 32 33 A A A A B C A B C A B C D A A B A B A B B M D M E H C E J B J J L E J J C K F L F G D D C B A F E D J H G K J H G B A B A F E Top* Side* Back Front Send sketch and description for other arrangements. Bottom *GUB2C - Top and bottom measures 9-1/4 x 5-1/2 and sides measure 10-5/8 x 5-1/2.
Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 J-19 DER and GUB Junction Unilet Covers Furnished with external threads. Applications Suitable for use in hazardous locations. Features Surface covers furnished with DER and GUB junction unilets have lugs to take a bar or wrench. Other style covers, as listed below, are available. Sealing covers have a plugged hole through which the unilet can be filled with sealing cement after installation. See section I for information regarding sealing cement. Note: When sealing covers are used, splices or taps within the unilets are prohibited by the CEC. Dome covers permit conductors to be pulled in with the ends extending well out beyond unilet body where splices can easily be made. The splices need not be crowded back into the unilet, but can be left as is when dome cover is used for their enclosure and protection. GRK-2 GUBK-1 GUBK-2 Catalogue Type of Nominal Inside Std. Wt. Lbs. Number Unilet Depth Diameter Pkg. Per 100 Surface Covers GRK-2C DER1C 3-9/16 1 75 GUBK-1C GUB1C 4-5/8 1 150 GUBK-2C GUB2C 6-1/4 1 325 GUBK-3C GUB3C 8-7/8 1 625 Sealing Covers GRK-2SC DER1C 3-9/16 1 176 DER and GUB unilets are furnished with surface covers. Order the remaining above listed covers as follows: Specify unilet catalogue number from the listings on pages 18 thru 21, this section, and the catalogue number of the cover required from the listings above. Example: GUB-2-16-64EX63E4EX (see example from page 19), except with GUBK-2-6 dome cover. DER Form 1 and GR Form 2 have the same cover opening.
J-20 Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 GUBM Instrument Unilets: Explosion-Proof, Dust-Ignition-Proof and Weather Resistant (Raintight) Applications Appleton GUBM instrument unilets provide enclosures for meters, gauges or other similar devices in hazardous locations. Features A heavy, round, explosion-proof glass window in the threaded cover permits direct reading of the enclosed instrument. These unilets have mounting lugs and are furnished with a 3/4" threaded entry for rigid conduit. Ordering Information Other hub arrangements and sizes are available. Prices on application. Mounting bosses are provided in the bottom of the unilet which can be drilled and tapped on proper centres for instruments to be used. No other means of instrument fastening is included in the list price. Instrument mounting plates or brackets can be furnished. On receipt of complete instrument dimensions, prices will be quoted. Call factory for details. Catalogue Type Hub Cover Mtg. Illustration Number unilet size opening* lugs GUBM-1C GUB-1C 3/4 5-3/8 2 For Copper-free aluminum add suffix -A. Dimensions of GUBM Unilets GUBM-2C GUB-2C 3/4 7-3/16 2 For Copper-free aluminum add suffix -A. Catalogue Mtg. A B C D E F G H J K L Number Lugs Dia. Dia. Dia. GUBM-1C 2 7" 7" 6-1/2" 5-1/2" 8-1/4" 6" 3-5/8" 5-3/8" 4-5/8" 1/2" 2-1/16" GUBM-2C 2 9-17/64" 10-19/32" 6-23/32" 5-5/8" 10-3/8" 9-19/32" 5" 7-5/16" 4-3/8" 1/2" 2-1/16" *Nominal diameter of Cover opening. Maximum Copper Content 4/10 of 1%.
Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 J-21 Dimensions: DER and GUB Unilets Explosion-Proof, Dust-Ignition-Proof and Weather Resistant (Raintight) DER1C (2 lugs) GUB1C (2 lugs) GUB2C (2 lugs) GUB3C (4 lugs) All Types Type Unilet A B C D E F G H J K L M N O T U Z DER1C 5-1/8 5-1/8 4-3/8 3-29/32 3-29/32 4 6 5/16 4-1/16 2-7/16 3-1/4 2-5/16 4-1/2 7 GUB1C 7 7 5-3/4 5-13/32 7-3/16 6 8-1/4 1/2 6-3/8 3-13/16 5-1/32 4-5/8 6-3/16 9-1/4 1/8 GUB2C 9-1/4 10-5/8 8-1/8 7-1/4 7-3/16 9-19/32 10-3/8 1/2 6-5/8 3-15/16 5-7/32 5-1/16 8 11-3/8 1/8 GUB3C 12-7/16 12-7/16 10-15/16 9-7/8 9-7/8 9 14 5/8 8-1/8 4-7/16 6-3/16 5-5/8 10-3/4 7 7 14-15/16 5/16
J-22 Groups A, B, C, D; Class I, Zone 1 and 2, IIC T6, Class III, Enclosure 4 Dimensions: DER and GUB Unilets -Continued Dimensional Drawings on preceding page 24 Entry Type Size P Q R X Y AA BB CC DD Threaded Entries Top or Bottom Side - 9-1/4" x 5-1/2" Left or Right Side - 10-5/8" x 5-1/2" 1/2 1-7/16 1-3/16 1-7/16 2 31/32 3/4 1-7/16 1-3/16 DER1C 1 1-7/16 1-3/16 1-1/4 1-7/16 1/2 2-1/16 1-7/16 1-3/4 11/16 1-3/8 3-3/8 1-3/4 3-1/2 1-11/16 3/4 2-1/16 1-7/16 1-3/4 11/16 1-3/8 3-3/8 1-3/4 3-1/2 1-11/16 GUB1C 1 2-1/16 1-7/16 1-3/4 11/16 1-1/8 3-3/8 1-3/4 3-1/2 1-11/16 1-1/4 2-1/16 1-7/16 1-1/2 2-1/16 2 2-1/2 1/2 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 3/4 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 GUB2C 1 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 1-1/4 2-1/16 2-1/16 2-13/16 3-5/16 2 1-1/2 2-1/16 2-1/16 2-13/16 3-5/16 2 2 2-5/8 2-1/4 2-1/2 2-5/8 2-1/4 1/2 3-1/4 2-3/8 3-1/4 1-3/16 2-3/8 3-7/8 2-11/16 2-11/16 3-7/8 3/4 3-1/4 2-3/8 3-1/4 1-3/16 2-3/8 3-7/8 2-11/16 2-11/16 3-7/8 GUB3C 1 3-1/4 2-3/8 3-1/4 1-3/16 2-3/8 3-7/8 2-11/16 2-11/16 3-7/8 1-1/4 3-1/4 2-3/8 3-1/4 3-7/8 2-11/16 1-1/2 3-1/4 2-3/8 3-1/4 3-7/8 2-11/16 2 3-1/4 2-3/8 2-1/2 3-1/4 2-3/8 1/2 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 3/4 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 GUB2C 1 2-1/16 2-1/16 2-13/16 1 2 3-5/16 2 3-9/16 1-3/4 1-1/4 2-1/16 2-1/16 2-13/16 1-3/16* 2-5/16* 3-5/16 2 3-7/16* 1-7/8* 1-1/2 2-1/16 2-1/16 3-1/8 3-5/16 2 2 2-5/8 2-1/4 2-1/2 2-5/8 2-1/4 Dimensions permit assembly of seals on adjacent conduit runs. Seals must be staggered for assembly on adjacent conduit runs. Requires pad. Available only on special order from factory. * Dimensions will not permit assembly of unions on adjacent conduit runs. Dimensions permit assembly of unions on adjacent conduit runs. Caution: Dimensions between hub centres are for use with hubs of the same size. These dimensions will not necessarily hold true for a combination of hubs of extreme sizes. Please consult Engineering Dept. for special combinations of hubs.
Groups C and D; Class III NEMA 3, 4* October 2008 J-23 GRU Conduit Outlet Boxes with Union Hubs: Explosion-Proof and Dust-Ignition-Proof Unilets for use with Threaded Metal Conduit. Funished with Internal Ground Screw. Conduit Cubic Cover Catalogue Number Size Inch Opening Box Type (Inches) Capacity (Inches) Malleable Iron Aluminum GRUT50 GRU with Union Hubs GRUT 1/2" thru 1" and GRUSE 1/2" thru 3/4" Malleable iron externally threaded body complete with internally threaded malleable iron surface cover. GRUSE 1" Copper-free aluminum cover and body with externally threaded cover. GRUT 1/2 19 3.25 GRUT50 3/4 19 3.25 GRUT75 1 19 3.25 GRUT100 GRUSE50 GRUSE 1/2 19 3.25 GRUSE50 3/4 19 3.25 GRUSE75 1 29 3.75 GRUSE100 GRU Covers Malleable iron with internal threads. Fit GRUT and GRUSE listed above. Surface 3.25 GRUK-S * Applies to GRUSE100 only. Does not apply to GRUSE100. Dimensions GRUT 8.00 min. 4.63 GRUSE50 and GRUSE75 GRUSE100 2.38 Ø3.75 4.63 GRUT Dimensions in Inches Hub Size (Inches) A B C D E F 1/2 4.19 2.69 6.25.75 8.25 2.31 3/4 4.19 2.69 6.25.75 8.25 2.31 1 4.19 2.69 6.50.94 8.75 2.31 Dimensions in Centimeters 1/2 10.6 6.8 15.9 1.9 21.0 5.9 3/4 10.6 6.8 15.9 1.9 21.0 5.9 1 10.6 6.8 16.5 2.4 22.2 5.9 GRUSE 1/2" and 3/4" Dimensions in Inches Hub Size (Inches) A B C D E F G 1/2 & 3/4 4.19 2.56 6.13.94 8.00 2.19 2.13 Dimensions in Centimeters 1/2 & 3/4 10.6 6.5 15.6 2.4 20.3 5.7 5.4 3.48 October 2008
J-24 October 2008 Wiring Capacity: Explosion-Proof Conduit Outlet Boxes CPU GR GRJ GRK ER GRF GRJS GRU Volume in Cubic Inches and Cubic Centimetres Wiring Capacity Type Size Vol./cu. in. Vol./cu. cm CPU Form 20 21.0 344.1 ER 1/2" 4.8 78.7 ER 3/4" 7.3 119.3 GR Form 1 18.0 295.0 GR Form 2 31.0 508.0 GR Form 3 (1-1/2") 72.0 1179.9 Form 3 (2") 76.0 1245.4 GRF All 18.0 295.0 GRJ All 7.3 119.3 GRJS All 12.5 204.8 GRK (Canopy) -50 C, -75 C, -100 C 16.0 262.2 GRK (Dome) 1DC 6.0 98.3 GRU (Union Hubs) 1/2", 3/4" 19.0 311.4 GRUE 1/2", 3/4" 15.3 250.7 1" 18.5 303.2 GRSS All 29.0 475.2 GRSSA All 29.0 475.2 GRUE-75 GRSS ELBD ELBD 90 Pulling Unilets Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 Capacity in Cubic Inches ELBD 7.0 7.0 25.0 25.0 69.0 69.0 240.0 240.0 540.0 540.0 Capacity in Cubic Centimetres ELBD 114.7 114.7 409.7 409.7 1130.7 1130.7 3932.9 3932.9 8849.0 8849.0 October 2008