Level 2 home EV charging, explained

What "Level 2" actually means (and why the granny lead isn't it)

If you've just bought an EV, you've probably noticed it comes with a portable lead that plugs into a normal 10-amp power point. That's Level 1, what most people call the "granny" charger, and it's about the slowest way to put electrons into a car. On a standard wall socket you're trickling in maybe 10 to 15 kilometres of range an hour, so a near-flat battery can take the better part of two days to fill. It works in a pinch, but it was never designed as your everyday Townsville charging solution.

Level 2 is a dedicated wall-mounted charger, hard-wired into your switchboard on its own circuit. Here in NQ that typically means 7kW on a single-phase home, which is roughly three to four times faster than the granny lead, so most cars are full overnight or topped right up during a sunny afternoon. The speed is only half the story though. A purpose-built charger talks to the car, manages the current properly and runs on a protected circuit, instead of asking a general-purpose power point to carry a heavy load for hours on end. That's why we always steer people toward a proper EV charger installation rather than relying on the lead from the boot.

Single vs three-phase, and the safety side of doing it properly

Most older Townsville homes are single-phase, and a 7kW Level 2 charger suits them perfectly. If your place is three-phase, often newer builds or homes with ducted air and a big solar system, you've got the option of an 11kW or 22kW charger that fills the car even quicker. Either way, the first thing we check is your switchboard and incoming supply, because a heavy continuous load like an EV needs a circuit that's actually rated for it. Plenty of boards out here are already near capacity once the air-con, hot water and pool pump are running on a 35-degree day.

That continuous-load factor is exactly why the power-point approach gets risky. A 10-amp socket pulling near its limit for hours can heat up worn wiring, tired outlets and old extension leads, and that's how you cook a power point or worse. A compliant Level 2 install puts the charger on its own dedicated, protected circuit with the right RCD and cabling, all signed off to Australian Standards. If your switchboard needs a tidy-up or an upgrade first, our licensed electricians sort the circuit and board side before the charger ever goes on the wall.

Charging off your roof: solar-aware and scheduled charging

This is where Townsville really wins. We get sun nearly all year, so the smart play is to charge the car when your panels are pumping out free power in the middle of the day rather than buying it back off the grid at night. Exporting surplus to Ergon earns you a fairly modest feed-in tariff, so every kilowatt you self-consume in the car is worth far more than what you'd get sending it out. A solar-aware Level 2 charger can be set to only run when there's genuine excess solar, or scheduled to come on during peak daytime generation, so the car effectively sips your rooftop output instead of your wallet.

It's worth knowing about Ergon's Tariff 12E too — the "Solar Soaker" — which makes grid power cheapest from 11am to 4pm, exactly when the network is awash with rooftop solar. Pair it with a smart charger and you charge off your own panels first, then top up at that cheap super off-peak rate if you need more, while the pricey 4pm–9pm evening peak never touches the car. You'll need a smart meter to switch, and we cover all of this on our EV charger installation page.

To make the most of it you want a solar power system sized with EV charging in mind, since a car can easily become the biggest single load in the house. Pair that with battery storage and you can stash cheap daytime solar to top up the car after dark too. We set the whole lot up to work together, the panels, the battery, the switchboard and a scheduled charger, so you're filling up off your own roof. If you're weighing up a charger anywhere from West End to Idalia or out to Kirwan, give us a yell and we'll talk through what your home can actually handle.