Charging your electric car at home overnight is cheaper and far more convenient than relying on public chargers. But a home EV charger is a real electrical installation, not a plug-in gadget, and getting it right depends on your switchboard, your wiring and where you park. Here's what's involved before you commit.
Do you actually need a dedicated charger?
You can trickle-charge most EVs from a normal powerpoint, but it's slow — often adding only a modest range per hour — and running a high-draw car charger from a standard outlet for hours isn't ideal for the circuit. A dedicated home charger (a wallbox) charges much faster and is wired on its own circuit designed for the load.
For most people who drive daily, a dedicated charger is the sensible choice. It's installed by a licensed electrician on a dedicated circuit, with the right protection, sized to what your home and car can support.
Can your switchboard handle it?
This is the key question, and it's why an electrician needs to look before quoting. A home charger adds significant continuous load, and an older or already-full switchboard may not have the spare capacity or the safety devices required to add the circuit safely.
In many cases a switchboard upgrade is part of the job — making room for the new circuit, adding the right protection, and bringing an older board up to current standards at the same time. It's better to find this out at the planning stage than partway through.
What it costs and what affects the price
Installation cost depends on the charger you choose, the distance from the switchboard to where you park, whether the cable run is easy or difficult (a charger right next to the board is far cheaper than one across the property), and whether your switchboard needs upgrading.
Because those factors vary so much from home to home, EV charger installation is quoted per job after a site assessment. Some buyers also look into available rebates or off-peak charging plans, which can change the running-cost maths in your favour.
What to check before you buy the charger
Have an electrician assess your switchboard and parking spot first, so you know whether an upgrade is needed and where the charger can realistically go. Check that the charger is compatible with your vehicle, and think about future-proofing if you might change cars.
Most importantly, only have it installed by a licensed electrician. A home EV charger is a serious, high-current installation, and doing it properly protects your home, your car and your insurance.
Considering a home EV charger? Blackwire can assess your switchboard and install it safely across Western Sydney.
This article is general information only. Pricing figures are indicative and vary by job. All electrical work in NSW must be carried out by a licensed electrician.
