Guest post by Jay, Owner and Licensed Electrician at Statewide Sparkies – Melbourne’s trusted residential electricians since 2014.
Most people spend weeks researching their electric vehicle and about ten minutes thinking about how they’ll charge it at home. That’s a problem – because the wrong charger can trip your fuses, waste your solar energy, and cost you more to fix than it would have to buy right the first time.
I’m Jay, and I run Statewide Sparkies, a residential electrical company based in Melbourne’s north. My team has installed hundreds of EV chargers across Melbourne over the past few years, and the same questions come up on every job. This guide answers all of them.
If you’d rather watch than read, I’ve covered the full breakdown in this video.
The Biggest Decision: Smart Charger or Dumb Charger?
Every home EV charger falls into one of two categories, and the difference matters more than most people realise.
A dumb charger draws maximum power the moment you plug in. That’s typically 32 amps. For the majority of Melbourne homes running on a 40-amp main switch, that’s enough to trip the whole house – especially if the oven, air con, and hot water system are already running when you get home from work.
The common workaround is setting a charging schedule for late at night. It works, until it doesn’t – a long drive, a schedule you forgot to adjust, or a hot night with the cooling running can undo it.
A smart charger monitors your home’s live power consumption and charges your car with whatever’s left over. Your electrician programs the main switch rating into the unit during installation. From that point, the charger automatically fills the gap between what your house is using and what your supply allows. When the household winds down for the night, charging naturally ramps up.
No manual scheduling. No tripped fuses. No compromise between charging the car and running the house.
Why Smart Chargers Pay Off Faster If You Have Solar
If your home has solar panels, a smart charger becomes even more compelling.
Excess solar energy fed back to the grid typically earns around 0.1 cents per kilowatt hour – effectively nothing. A smart charger can divert that surplus into your car instead, giving you free fuel on every sunny day your car is parked at home.
The price gap between a basic charger and a quality smart charger is around $150 to $200. For a solar household, that difference pays for itself quickly. It’s one of the clearest value propositions in home energy management right now.
Kilowatt Ratings: What the Numbers Actually Mean
Home EV chargers typically come in three output levels:
- 7 or 7.4 kW – single-phase, 32 amps. Sufficient for most households.
- 11 kW – three-phase, 20 amps. For higher daily usage.
- 22 kW – three-phase, 32 amps. For very high-mileage drivers.
The 7.4 kW single-phase charger covers 99% of residential needs. It will fully charge most EVs overnight without issue. The jump to three-phase only makes sense if you’re driving 300 km or more daily and need a full battery every morning without fail.
Most electricians who recommend three-phase chargers to standard suburban households are either upselling or not asking the right questions.
Three Things Your Electrician Needs to Know
When you call for a quote, having this information ready leads to a faster and more accurate estimate.
1. What car do you drive?
Vehicle compatibility affects charger choice. Tesla, for example, has specific integrations with certain models that allow the charge port to open automatically from the charger itself – a feature not available on most brands. Know your vehicle before choosing a unit.
2. What’s your home like?
Single storey or double? Tin roof or tiles? Electricians need roof access to run cable, and a tile roof takes longer to work with than a tin one. This affects labour time and your quote.
3. Single phase or three phase supply?
Check your switchboard. Find the main switch and look for a label starting with “C” – C32, C40, C50, or C63. That’s your home’s maximum supply.
Single-phase main switches are roughly 1 cm wide with a single toggle. Three-phase units are about 3 cm wide with a broader housing. This tells your electrician what charger options are available to you.
Matching the Charger to Your Situation
Here’s how I typically frame the recommendation for three common customer types:
No solar, no plans for it – A load-managing smart charger without solar capability covers everything you need and avoids paying for features you’ll never use.
Have solar, or planning to get it – A solar-integrated smart charger like the EV-NX E2 Core handles both load management and surplus solar diversion. This is the charger I recommend most often.
Solar, Tesla, long cable run needed – The EV-NX E2 Plus adds Tesla integration and supports untethered setups, so you can use a longer aftermarket cable if the car parks away from the wall.
What to Say When You Call for a Quote
Most electricians can give you a reasonably accurate fixed-price estimate over the phone if you give them the right details upfront. Here’s a simple script:
“Hi, I’m after a quote for an EV charger installation. I drive a [make and model]. I [do/don’t] have solar. My switchboard [was recently upgraded / hasn’t been touched in years]. The charger would go about [X] metres from the switchboard. It’s a [single/double] storey [tiled/tin] roof. I can send photos of the switchboard and the install location.”
A photo of your switchboard and the wall where you want the charger is worth more than any amount of back-and-forth over the phone.
On the Budget Charger Question
Hardware stores sell EV chargers. Some are $500 to $600. A quality smart charger from a brand an electrician will stand behind costs around $800.
The $200 to $300 gap buys load management, solar compatibility, manufacturer support, and the confidence of a product built for long-term residential use rather than a white-label unit designed to hit a price point.
You’ve invested $40,000 to $60,000 in the car. The charger runs every night for the next decade. It’s not the place to save two hundred dollars.
About the Author
Jay is the owner and principal electrician at Statewide Sparkies, a licensed residential electrical company serving Melbourne’s north and surrounding suburbs. Statewide Sparkies holds REC licence 25170 and carries a 5.0 rating across 82 Google reviews. Services include EV charger installation, switchboard upgrades, lighting, split-system air conditioning, and 24-hour emergency callouts.
For EV charger quotes or any residential electrical work across Melbourne’s north, contact Jay directly via the Statewide Sparkies website.
