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.
The Western Australian Service and Installation Requirements (WASIR) defines standard supply as 240 volt single-phase (+/- 6%) or 415 volt three-phase (+/- 6%) for
Perth metropolitan and major regional centres within the SWIS:
Rural centres and connections within the SWIS (Note 1):
The Western Australian Electrical Requirements (WAER) also stipulates minimum sized consumer mains cable for domestic premises to be in accordance with clause 9.2:
To determine the maximum demand, refer to AS/NZS 3000:2018, specifically:
The consumers main switch must be upgraded to a circuit breaker rated for a standard connection service if:
In all cases, an application must be made to Western Power to accommodate any requested additional load above a standard connection service. Click here for further information on this process.
Please contact WA Electrical Inspectors if you have any queries.