EV Charger Installation in Sunshine North

Most Sunshine North properties with a shed or workshop have power out there already. What varies enormously is whether it was installed by an electrician or by a previous owner with a spare roll of cable.

We test the submain size, its protection, its earthing arrangement and the voltage drop over the run before quoting anything. Where the existing supply is adequately sized and correctly protected, the charger install becomes a simple subboard addition at the shed end. Where it is not, we price a new submain honestly rather than connecting a car to something undersized.

Original switchboards and original wiring are the norm rather than the exception in the un-renovated Sunshine North stock. Rewireable fuses, no residual current protection, and a main switch that has no headroom for a 32A continuous load.

The board comes first, at $800 to $3,500 depending on the meter panel and the consumer mains. In a house of this age that spend does far more than enable a car. It puts residual current protection across every circuit in a property that has never had it, which is the single most valuable electrical improvement available here.

Broad single storey tiled roofs with generous unshaded area are common in Sunshine North, and plenty of homes carry 6.6kW or larger systems as a result. That makes solar charging genuinely viable rather than theoretical.

A smart charger with a current transformer on the main supply diverts surplus generation to the car instead of exporting it. On a clear day with a well sized array there is often 3 to 5kW available in the middle of the day. It works best for households with someone home or a car that sits on weekends, and we set both solar and off peak modes up at commissioning.

Sunshine North is single phase residential supply on the Jemena network. That puts the ceiling at 32A and about 7.4kW, which is 40 to 50km of range per hour. Eight hours overnight adds 320 to 400km, which covers virtually any suburban driving pattern with room to spare.

Three phase does turn up occasionally on properties that once ran serious workshop equipment out the back, and where it already exists a 22kW capable charger at $2,500 to $3,000 plus is worth discussing. Converting a single phase supply purely for charging speed is not something we would recommend to a household with one car and a driveway.

What does matter on a long block is voltage drop. A charger sitting at full current for eight hours at the end of a forty metre run is exactly the load that exposes an undersized cable, so the calculation gets done properly rather than eyeballed. That is often why our quote specifies a larger cable than a cheaper one does.

EV charging equipment is prescribed electrical work. The charger goes on a dedicated final subcircuit with a correctly rated breaker and RCD protection suited to DC leakage under AS/NZS 3000, installed by a licensed Registered Electrical Contractor.

You finish with a Certificate of Electrical Safety issued through REC 37223, commissioning details showing the current the unit was set to and tested at, and a 100% workmanship guarantee on top of the manufacturer warranty. Keep the certificate with your house records, because manufacturers ask for it on warranty claims and buyers ask for it later.