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Meter wiring diagrams

Here you can find documents that give guidance on the wiring of meter stations for common situations. Please note this does not cover high voltage metering.

Single phase

  • Single phase metering (with controlled phase) pdf — 0.19 MB
  • Single phase metering (without controlled phase) pdf — 0.17 MB
  • Single phase (temporary builders supply) pdf — 0.08 MB
  • Single phase (day night dual tariff) pdf — 0.18 MB
  • Single phase metering pre-paid controller Esmart (with controlled phase with pilot wire and contactor) pdf — 0.24 MB
  • Single phase metering pre-paid controller Esmart (without controlled phase ripple receiver) pdf — 0.24 MB
  • Single phase metering pre-paid controller Esmart (without controlled phase) pdf — 0.21 MB

2 phase supply

  • 2 phase supply (with 2 uncontrolled phases and controlled phase) pdf — 0.19 MB
  • 2 phase supply (with 2 24 hour phases and 1 controlled phase for distributed generation) pdf — 0.1 MB

3 phase supply

  • 3 phase (day night dual tariff school special) pdf — 0.2 MB
  • 3 phase supply (standard connection for 230 400V 4 wire ct meter installation and test block) pdf — 0.27 MB
  • 3 phase supply (with 1 controlled phase) pdf — 0.21 MB
  • 3 phase supply (with 2 24 hour phases and one controller phase for distributed generation) pdf — 0.11 MB
  • 3 phase supply (with 2 uncontrolled phases and 1 controlled phase) pdf — 0.2 MB
  • 3 phase supply (with 3 phase controlled phases) pdf — 0.09 MB

Multiple installations

  • Dual single phase metering (with controlled phase) pdf — 0.11 MB
  • Installation with 2 Or 3 ICPS (3 phase service and combined meter board) pdf — 0.12 MB
  • Installation with up to 3 ICPS (3 phase and single phase ICPS with and without controlled phases) pdf — 0.15 MB
  • Installation with more than 3 ICPS (3 phase service and combined meter board) pdf — 0.13 MB

Distributed generation / alternative energy

  • Single phase metering (with controlled phase for distributed generation) pdf — 0.11 MB
  • Single phase metering (without controlled phase for distributed generation) pdf — 0.09 MB
  • 2 phase supply (with 2 24 hour phases and 1 controlled phase for distributed generation) pdf — 0.1 MB
  • 3 phase supply (with 2 24 hour phases and one controller phase for distributed generation) pdf — 0.11 MB

Typical equipment dimensions

EquipmentLength x Width x Depth (mm)
Single phase meter - short terminal cover170 x 120 x 120
Single phase meter - long terminal cover220 x 120 x 120
3 phase whole current meter - short terminal cover170 x 170 x 65
3 phase whole current meter - long terminal cover245 x 170 x 65
3 phase CT meter - short terminal cover220 x 150 x 75
3 phase CT meter - long terminal cover260 x 150 x 75
Ripple receiver (standard)175 x 110 x 75
*Ripple control contractor160 x 75 x 65
Esmart controller (owned by retailer): Refer to retailer for dimensions

Notes

These diagrams apply only to Northpower-owned metering equipment (includes ripple receiver contactor).

Northpower will supply a controlled supply to a maximum rating 2A. If a load greater than 2A is controlled, e.g spa pool, the customer is required to fit an auxilary contactor.

Equipment and wiring must have adequate load and fault ratings.

The colours used in the diagrams are to distinguish between different phases, neutral and earthing conductors. The colour of the wiring should comply with AS/NZS 3000 rather than the diagrams.

Approval of non-standard arrangements should be referred to Northpower’s Network Planning Department.

These diagrams apply to new meter stations or meter stations that are being significantly upgraded (excluding meter replacement) Note: where a ripple receiver or contactor is replaced on a planned basis, an HRC or MCB should be installed, if there is none.

For controlled options refer to Northpower's tariff options.

Glossary terms

CT: Current Transformer
HRC: High Rupture Current
ICP: Individual Connection Point
MCB: Miniature Circuit Breaker
RCD: Residual Current Device

See also: guidance on the wiring of meter stations for common situations. 


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