Max value Max life Range from. ($000) (Years) Pole Type

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1 Draft Handbook Vector Asset Description 1 Unit Maximum Maximum Life Max value Max life Max Asset Life Max Asset Life Range from Submitters Max Asset Life ($000) SUBTRANSMISSION Concrete Wood Concrete Wood Concrete Wood Concrete Wood 66kV Lines Heavy ( 150mm2 300mm2 A1) km 69 66kV Lines Light (<150mm2 A1) km 59 66kV Lines Double Cct Heavy km kV Lines Double Cct Light km 89 Max Benchmark 33 kv Lines Heavy ( 150 mm 2, 300 mm 2 Al ) km kv Lines Light (< 150 mm 2 Al) km kv Lines DCct Heavy km kv Lines DCct Light km XLPE 66kV Cables - ( 2mm2 A1) km 0 66kV Cables - Double Cct ( 2mm2 AL) km 725 PILC XLPE PILC XLPE PILC XLPE PILC 33 kv - Cables ( 2 mm 2 Al) km kv - Cables DCct ( 2 mm 2 Al) km Pilot/Communications Ccts O/H km ** *** *** ** *** *** Pilot/Communications Ccts U/G km ** *** *** ** *** *** 66kV Load Break Switch No kV Air Break Switch No kV Load Break Switch No kV Air Break Switch No. 9 66kV Link/Isolator No kV Links/Isolator No kV Outdoor circuit breaker No. 33kV Outdoor circuit breaker No kV Independent surge arrestors 3ph Set 15 33kV Independent surge arrestors 3ph Set 8 8 Air Break Switch No kV Isolator No. 9 12or9or4.5 33kV Surge Arresters (3 phase set) No. 8 8 Subtransmission

2 Vector Benchmark Asset Description 1 Unit Maximum Maximum Life Max Asset Life Max Asset Life Max value Max life Range from Max Asset Life Max ($000) a Submitters 22/11 kv ZONE SUBSTATIONS Land No Site Development and Buildings No. ** ** ** 50 ** Incoming (Outdoor) Switchgear, Protn. & Controls No. ** ** ** ** Incoming Outdoor Switchgear (excluding CB) No. ** ** Transformer Outdoor Switchgear (excluding CB) No. ** ** Feeder Outdoor Switchgear (excluding CB) No. ** ** Bus Section/Coupler Outdoor Switchgear (excluding CB) No. ** ** Incoming Circuit Protection and Controls No. ** ** ** Feeder Protection and Controls No. ** ** ** Bus Section/Coupler Protection and Controls No. ** ** ** Transformers No. ** ** ** ** ** 33kV Indoor Switchgear Cubicle No. ** ** ) ) kV Bus Sction/Coupler Indoor Switchgear No. ** ** ) av 50 ) av kV Outdoor Circuit Breakers No. ** ) ) Transformer Protection and Controls No. ** ** ** ** ** Distribution CB, Protection and Controls (Incom/Bus) No. ** ** ** ** Distribution CB, Protection and Controls (Feeder) No. ** ** 36 ** 22/11 kv Indoor Switchgear Cubicle 30 22/11 kv Outdoor Circuit Breaker 27 Draft Handbook Concrete Wood Concrete Wood Concrete Wood Outdoor Structure if not included above No. ** ** SCADA and Communications Equipment No. ** ** No. ** ** Batteries and Chargers 20 LV Supplies (excluding local service transformer) No. ** DC Supplies, batteries and inverters No. 20 ** Other Items No. ** ** Note 1. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's final handbook. Zone Substations

3 Kerslake Orion Draft Handbook Orion Kerslake Benchmark Asset Description 1 Unit Maximum Maximum Life Max Asset Life Max Asset Life Max Max value Max life Range from Max Asset Life Max $0 Submitters DISTRIBUTION LINES Concrete Wood Concrete Wood Concrete Wood Concrete Wood 66kV Lines - Dcst (wolf) 66kV Lines - Scst (wolf) 66kV Lines - Single pole wood (wolf) MV Lines 33kV Lines - Heavy (between 150 and 300 sq mm Al) kV Lines Light (up to 150 sq mm Al) (Dog) kV Lines DCct Heavy 96 33kV Lines DCct Light (Dog) 80 33kV Air Break Switch 10 22kV O/H Heavy ( 150mm2 2mm2 A1) km kV O/H Medium (>50mm2 <150mm2 A1) km kV O/H Light ( 50mm2 A1) km kV Single Phase (2 wire) km kV SWER km kv O/H Heavy ( 150 mm 2, 2 mm 2 Al) km kv O/H Medium (> 50 mm 2, < 150 mm 2 Al ) km kv O/H Light ( 50 mm 2 Al) km kV Single Phase (2 wire) km kV single phase or SWER lines km MV Lines 22kV O/H DCct Heavy km kV O/H DCct Medium km kV O/H DCct Light km kv O/H DCct Heavy km kv O/H DCct Medium km kv O/H DCct Light km kV O/H Underbuilt Heavy km kV O/H Underbuilt Medium km kV O/H Underbuilt Light km kV O/H underbuilt Single Phase (2 wire) km kV O/H Underbuilt SWER km kv O/H Underbuilt Heavy km kv O/H Underbuilt Medium km kv O/H Underbuilt Light km kV O/H underbuilt Single Phase (2 wire) km kV O/H Underbuilt SWER km 9 9 Note 1. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's final handbook. Overhead Lines

4 Asset Description 2 Unit Maximum Maximum Life Orion Nelson Draft Handbook Orion Vector ($000) Max value Max life Range from Max Asset Life Max Asset Life Max Submitters Max Asset Life Max DISTRIBUTION CABLES XLPE PILC XLPE PILC XLPE PILC XLPE PILC 33kV Cables (up to 2mm2 Al) kV Cables Double Cct (up to 2mm2 Al) 295 Benchmark 22kV U/G Heavy (>2mm2 300mm2 A1) kV U/G Medium (>50mm2 2mm2 A1) kV U/G Light ( 50mm2 A1) kv O/H Extra Heavy (above 300 mm 2 Al) kv U/G Heavy (> 2 mm 2, 300 mm 2 Al ) km to kv U/G Medium(> 50 mm 2, 2 mm 2 Al ) km to kv U/G Light ( 50 mm 2 Al) km kV U/G DCct Heavy kV U/G DCct Medium kV U/G DCct Light kv U/G DCct Heavy km kv U/G DCct Medium km kV U/G DCct Light km Note 1 Costs include traffic managemnt for cables laid in carriageway. Note 2. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's final handbook. Underground Cables

5 Asset Description 1 Unit Maximum Maximum Life Orion Draft Handbook Max value Max life (years) Max Asset Life Max Asset Life Max ($000) DISTRIBUTION SWITCHGEAR Distribution Air Break Switch (ABS) 3.5 Range from Submitters Max Asset Life Benchmark 22/11 kvdisconnector 3 ph (Excl Pole) No kV Disconnector/links 3ph (Excl Pole) kV Disconnector/links 3ph (Excl Pole) /11 kvdisconnector 2 ph (Excl Pole) kV Disconnector/links 2ph (Excl Pole) kV Disconnector/links 2ph (Excl Pole) /11 kv Load Break Switch (Excl Pole) No kV Load Break Switch (Excl Pole) Auto/remote kV Load Break Switch (Excl Pole) Auto/remote kV Load Break Switch (Excl Pole) kV Load Break Switch (Excl Pole) /11 kv Dropout Fuse 3 Ph (Excl Pole) No kV Dropout Fuse 3 Ph (Excl Pole) kV Dropout Fuse 3 Ph (Excl Pole) /11 kv Dropout Fuse 2 Ph (Excl Pole) kV Dropout Fuse 2 Ph (Excl Pole) kV Dropout Fuse 2 Ph (Excl Pole) kV Dropout Fuse SWER (Excl Pole) kV Dropout Fuse SWER (Excl Pole) kV cut out fuse (1 phse) ie Drop out fuse on pole or V UG service fuse (3 phase) in link or boundary box V UG service fuse (1 phase) in link or boundary box V Fusing on OH service (1 phase) on pole or cross arm V Fusing on OH service (3 phase) on pole or cross arm /11 kv Oil Sw/Sectionaliser (Excl Pole) No kV Sectionaliser (Excl Pole) kV Sectionaliser (Excl Pole) /11 kv Recloser (Excl Pole) No kV Recloser (Excl Pole) Auto/remote 39 11kV Recloser (Excl Pole) Auto/remote 37 22kV Recloser (Excl Pole) kV Recloser (Excl Pole) Independent surge arrestors 22kV 3ph 3 3 Independent surge arrestors 11kV 3ph /11 kv Circuit Breaker 2 No kV Indoor Circuit Breaker kV Indoor Circuit Breaker kV Circuit Breaker (oil) - Network Substation 34 11kV Circuit Breaker (sealed) - Network Substation 34 11kV Circuit Breaker (oil) - 11kV substation 34 11kV Circuit Breaker (oil) - 33/11kV district sub 31 11kV Circuit Breaker (sealed) - 33/11kV district sub 31 11kV Circuit Breaker (oil) - 66/11kV district sub 31 11kV Circuit Breaker (sealed) - 66/11kV district sub 31 Voltage Regulator No. ** 55 ** 55 ** 55 ** 55 Ring Main Unit - 3 Way No Ring Main Unit metalclad oil-filled 3 Way Ring Main Unit moulded epoxy resin base 3 Way Extra Oil Switch No Extra Oil Switch metalclad oil-filled Extra isolator moulded epoxy resin base Extra Fuse Switch No Extra Fuse Switch metalclad oil-filled Extra fuse unit moulded epoxy resin base Note 1. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's final handbook. Note 2 Asset class now in "Zone Substation" category Distribution Switchgear

6 Asset Description 1 Unit Maximum Maximum Orion Max Asset Life Max Asset Life Max Draft Handbook Max Max Life Range from Submitters Max Asset Life Benchmark DISTRIBUTION TRANSFORMER (kva) Single/Two Phase Units (11/22 kv primary) 10 No No No No Up to and including 50kVA Three Phase Units (Pole Mounted - Bushing Terminations) 11kV Primary 15 No No No No No No No kv Primary 15 No No No No No No No Three Phase Units (Cable entry, one or both voltages) Pad Mounted Box (Micro Sub) 3 Phase 11kV Primary 100 No No No No No ,000 No ,250 No ,500 No kv Primary 100 No No No No No ,000 No ,250 No ,500 No SWER Isolating Transformers 22kV 11kV 22kV 11kV DISTRIBUTION SUBSTATIONS 22kV/LV & 11kV/LV Pole Mounted (50 kva or less) No Pole Mounted (100 kva or more) No Pole Mounted (H pole 200 kva or more) 4 Ground Mounted (Covered) No Kiosk (Masonry or block enclosure) No On Customer s Premises with Feedout No Land *** - *** - Easements *** - *** - Distribution Transformers and Subs

7 Asset Description 3 Unit Maximum Maximum Life Orion Nelson Draft Handbook Orion Vector Kerslake ($000) Max Max Life Range from Max Asset Life Max Asset Life Max Submitters Max Asset Life Max Benchmark LV LINES Concrete Wood Concrete Wood Concrete Wood Concrete Wood Overhead - LV only km Overhead LV 4 wire only heavy km Overhead LV 4 wire only medium km Overhead LV 4 wire only light 38 Overhead LV only 2 wire medium Overhead - LV only 2 wire light 30 LV Line Urban Heavy 56 LV Line Rural Light 30 1 Overhead Underbuilt km LV underbuilt 4 wire heavy km LV underbuilt 4 wire medium km LV underbuilt 2 wire medium LV underbuilt 2 wire light 14 LV underbuilt urban heavy 28 LV underbuilt rural light 18 Streetlighting O/H 2 wire Streetlighting O/H underbuilt XLPE /PVC PILC XLPE /PVC PILC XLPE /PVC PILC XLPE /PVC PILC Underground - LV Only km Underground LV only heavy km Underground LV only medium km Underground - with MV km 25 Underground with MV heavy km Underground with MV medium km Streetlighting U/G 2 core own trench km Streetlighting U/G 2 core joint trench LV Network Link Pillar way link pillar No way link pillar No Note 1 Includes council costs and traffic management. Note 2 Cost depends on number of customers services provided. Note 3. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's final handbook. LV Lines Cable

8 Asset Description 1 Unit Maximum MED Handbook ($000) Maximum Life Max Asset Life Max Asset Life Draft Handbook Max value Max life Range from Submitters Max Asset Life Benchmark CUSTOMER SERVICE CONNECTIONS EXCLUDING METERS AND RELAYS OH UG HV overhead No HV underground No LV overhead - 1 ph No LV overhead- 3 ph No LV 3 ph Overhead (> 200 amp) No LV underground 1 ph - shared fuse pillar No LV underground 1 ph - own fuse pillar No LV underground 3 ph - shared fuse pillar No LV underground 3 ph - own fuse pillar No OTHER SYSTEM FIXED ASSETS SCADA and Comms (Central Facilities) Lot ** 15 ** ** 15 ** 15 Note 1. Asset classes shown in bold are not included in the MED Handbook. Asset classes shown shaded are included in the Commission's draft handbook. Customer Connections Other assets

9 MULTIPLIERS Overhead Lines: MED Handbook Draft Handbook Vector Urban 1.5 to to to to to to 1.8 Remote 1.0 to to to to to to 1.25 Rugged 1.2 to to to to to to 1.3 Underground cables Business District 1.15 to TO to to to to 2.0 Rock 1.5 to TO to to to to Note 1 MED Hanbook multipliers include traffic control. This is now treated as a separate allowance Multipliers

10 TRAFFIC CONTROL MED Handbook Draft Handbook Vector Orion PBA Overhead Construction 1.1 $800 per km $ /km $800/km Transit L1 Light 1.03 $1,500/km Transit L2 medium 1.19 to 1.33 Heavy 1.19 to 1.33 $6k per km Transit L1 Underground Construction 1.1 to to 1.25 $4,000 per km $4k - 6k/km $14.2k/km level1 ) 32.5 across mix $15k per km Transit L2 in berms Light 20,000 $k/km level 2 ) $k per km Transit L2 in carriageway Medium 25,000 Heavy $30k to $55k Traffic Management

LIST OF EDD DESCRIPTION/ SPECIFICATION AS 19 TH OCTOBER 2016

LIST OF EDD DESCRIPTION/ SPECIFICATION AS 19 TH OCTOBER 2016 No Description/ Specification Amendment 1 EDD 1 :2008 11/0.415 kv Distribution Transformer, Oil Filled - 2 ED 2 :1987 The Galvanization of Iron and Steel, Articles Other Than Steel Wire - 3 ED 3 :1979