WESTERN POWER REMINDER ABOUT
WA BRANCH
ELECTRIC VEHICLE CHARGERS WESTERN POWER WOULD LIKE TO REMIND ALL ELECTRICAL CONTRACTORS THAT WHEN INSTALLING ELECTRIC VEHICLE CHARGING STATIONS, THEY SHOULD ENSURE THAT THEY DO NOT EXCEED THE CAPACITY OF THE SUPPLY AND CONNECTION ARRANGEMENT. Specific attention is required for residential and small commercial connections that have a standard connection service, to ensure the connection remains safe and compliant.
minimum sized consumer mains cable for domestic premises to be in accordance with clause 9.2:
The Western Australian Service and Installation Requirements (WASIR) defines standard supply as 240 volt single-phase (+/- 6%) or 415 volt three-phase (+/- 6%) for:
32 amps per phase, threephase (415 volts); and
32 amps single-phase (240 volts); or
32 amps three-phase (415 volts); or
63 amps single-phase (240 volts); or
Rural centres and connections within the SWIS*:
16 amps per phase, multiphase (480 volts); and Maximum size of consumer mains cable shall not exceed 35mm2.
The Western Australian Electrical Requirements (WAER) also stipulates
54
|
n e c a n e Ws
three-phase: 6 square millimetres, copper conductors.
To determine the maximum demand, refer to AS/NZS 3000:2018, specifically:
Perth metropolitan and major regional centres within the SWIS:
single-phase: 10 square millimetres, copper conductors; or
clause 2.2.2 maximum demand, and appendix C, circuit arrangements and clause C2 maximum demand (with reference to tables C1 and C2 for single and multiple domestic and commercial electrical installations).
The consumers main switch must be upgraded to a circuit breaker rated for a standard connection service if:
the capacity exceeds the supply arrangement rating;
any requested additional load above a standard connection service. For further information on this process, please visit www.westernpower.com.au/connections/ power-supply/modify-your-power-supply. Please contact WA Electrical Inspectors if you have any queries at www.waei.com.au. *Notes:
is unknown; or
I. Subject to service availability
the connection is to a network mini pillar or pit.
II. For network connection generation capacity limits, refer to WASIR Section 15 and Western Power’s embedded generation requirements.
In all cases, an application must be made to Western Power to accommodate
September 2021
