A 3 phase EV charger can add up to 120km of driving range per hour, roughly three times faster than what you get from a single-phase setup. For homeowners with three-phase power already connected, it opens up charging speeds that turn an overnight top-up into a quick afternoon session.
But three-phase charging is not as straightforward as buying a bigger charger and plugging it in. Your power supply, your switchboard capacity, and even your car’s onboard charger all determine whether you actually get those faster speeds. This guide covers what three-phase EV charging involves, which chargers are available in Australia, and how to work out if the upgrade makes sense for your home.
Looking for an EV charger install? SolaXs is a CEC-accredited installer with 25+ years experience on the Mid North Coast. Get a free EV charger quote today.
What Three-Phase Power Means for EV Charging
Single-phase power delivers electricity through one active conductor. It runs at 230V and supports a maximum EV charging rate of about 7.4kW. That is what most Australian homes have, and for overnight charging it works fine.
Three-phase power uses three active conductors running simultaneously, each carrying 230V but offset in timing. Combined, they deliver roughly 400V at the charger. That higher voltage and the ability to draw current across three circuits instead of one is what enables 11kW, 22kW, and even higher AC charging speeds.
In plain terms, three-phase power does for EV charging what a three-lane road does for traffic. Same cars, same speed limit, but three times the throughput.
| Single Phase | Three Phase | |
|---|---|---|
| Supply voltage | 230V | 400V (3 x 230V) |
| Max AC charging rate | 7.4kW | 22kW |
| Range added per hour | ~40km | ~120km |
| Full charge (60kWh battery) | 8-9 hours | Under 3 hours |
| Common in | Most suburban homes | Rural properties, newer builds, commercial |
Three-Phase Charging Speed Tiers
Having three-phase power does not automatically mean 22kW charging. The actual speed depends on two things: the charger you install and the onboard charger built into your EV. The slower of the two sets the ceiling.
11kW three-phase charging
An 11kW charger draws about 16A per phase. This is the most common three-phase setup in Australian homes because most EVs sold here have 11kW onboard chargers. It adds roughly 60km of range per hour and fully charges a 60kWh battery in about 5.5 hours.
If your EV has an 11kW onboard charger (which covers the Tesla Model 3, Model Y, most BYD models, and many Hyundai and Kia EVs), an 11kW three-phase charger gives you the full speed your car can handle.
22kW three-phase charging
A 22kW charger draws 32A per phase, doubling the current of an 11kW unit. It adds about 120km of range per hour and can fill a 60kWh battery in under 3 hours. But your car needs a 22kW onboard charger to use it fully. If your EV caps at 11kW, the charger will still work, it just charges at 11kW.
EVs with 22kW onboard chargers include the Renault Zoe, BMW iX and i5, Porsche Taycan (optional), and selected MG and Hyundai/Kia trims. The list is growing as manufacturers recognise the demand for faster AC charging.
Unsure which speed suits you? Our 22kW EV charger guide breaks down the full specs and compatible vehicles in detail.
3 Phase EV Chargers Available in Australia
The three-phase charger market in Australia has matured quickly. Most quality units now support both 11kW and 22kW output, app-based scheduling, and solar integration. Here are the models we install and recommend.
| Charger | Three-Phase Output | Standout Feature | Price Range |
|---|---|---|---|
| Ocular LTE Plus | 11kW / 22kW | IP66 weatherproofing, LCD display, IK10 rated | $1,200 – $1,500 |
| Tesla Wall Connector | 11kW / 22kW | Wi-Fi app control, works with all EVs (Type 2) | ~$780 |
| Goodwe HCA Series | 11kW / 22kW | OCPP compatible, 5-year warranty, solar aware | $1,000 – $1,400 |
| Zappi V2 | 7kW / 22kW | Built-in solar diversion, eco and boost modes | $1,645 – $1,695 |
| Wallbox Pulsar Plus | 11kW / 22kW | Compact size, smart scheduling, solar integration | ~$1,650 |
All of these use the universal Type 2 connector, which is standard for every EV sold in Australia. The Tesla Wall Connector is the most affordable entry point. The Zappi is the pick if you want to maximise self-consumption from rooftop solar without needing a separate energy management system.
Every charger on this list can be configured for either 11kW or 22kW output on three-phase power. Your electrician sets the current limit during installation based on your switchboard capacity and what your EV supports.
How to Check If You Have Three-Phase Power
Before shopping for a three-phase charger, you need to confirm your property’s power supply. There are a few quick ways to check.
- Look at your main circuit breaker. Open the meter box and check the main switch. A single-phase supply has a single-pole or double-pole breaker. Three-phase has a triple-pole breaker with three switches ganged together.
- Count the wires at the meter. Single-phase has two active wires (one active, one neutral). Three-phase has four (three active, one neutral). The active wires are usually red, white and blue.
- Check your electricity bill. Some retailers list the supply type. Look for “single phase” or “three phase” in the tariff or meter details section.
- Ask your electrician. During a site visit for an EV charger quote, this is the first thing they check. It takes about 30 seconds.
Can you upgrade to three-phase?
In most parts of Australia, yes. Your electricity distributor (Ausgrid, Essential Energy, Endeavour Energy in NSW) handles the supply upgrade. The cost typically runs between $1,000 and $5,000 depending on how far the street transformer is from your meter box and the condition of the existing cabling.
The upgrade involves running new cables from the street to your property and installing a new meter. Your electrician can coordinate the application with the distributor on your behalf. Allow 4 to 8 weeks for the process, though timelines vary by region.
Already have three-phase? Many rural properties, older homes with workshops, and newer estates come with three-phase as standard. If you have a pool pump, large air conditioning system, or workshop equipment, there is a good chance you already have it.
What a 3 Phase EV Charger Installation Involves
Installing a three-phase charger is more involved than a basic plug-in unit, but a qualified electrician can typically complete the job in half a day. Here is what the process looks like.
- Site assessment. Your electrician confirms three-phase supply, checks switchboard capacity, and measures the cable run from the board to your preferred charger location.
- Switchboard work. A dedicated circuit breaker and safety switch (RCD) are installed for the charger circuit. For 22kW, this is a 32A three-phase breaker. For 11kW, it is 16A.
- Cable run. Three-phase cable runs from the switchboard to the mounting point. The cable gauge is heavier than single-phase runs, especially for 22kW installations.
- Charger mounting and wiring. The unit is fixed to the wall (or a pedestal mount) and wired into the dedicated circuit.
- Testing and commissioning. Earth fault, insulation resistance, and polarity tests are completed. The charger is powered up and tested at full output to confirm everything is correct.
Installation costs
| Component | Typical Cost |
|---|---|
| Charger unit | $780 – $1,800 |
| Three-phase installation (labour + materials) | $800 – $1,500 |
| Switchboard upgrade (if required) | $500 – $1,500 |
| Three-phase supply upgrade (if required) | $1,000 – $5,000 |
If your home already has three-phase power and a modern switchboard, the total installed cost for a quality charger sits between $1,600 and $3,300. Add the supply upgrade if you are starting from single phase and the total can reach $4,500 to $7,000.
For a breakdown of costs specific to different charger types, our EV charger installation cost guide has the full picture.
Pairing a 3 Phase EV Charger with Solar
Three-phase power and rooftop solar are a natural pairing. A larger solar system on three-phase can export across all three phases, and a smart charger can absorb that excess generation instead of sending it to the grid at a low feed-in tariff.
On the Mid North Coast, a well-sized solar system generates more power than most homes use during the middle of the day. Without a battery or EV charger to soak up that surplus, it goes to the grid at 5 to 8 cents per kWh. Diverting it to your car instead offsets electricity you would otherwise buy at 25 to 35 cents per kWh. The savings compound quickly.
How solar diversion works
Smart chargers like the Zappi and Goodwe HCA have built-in solar diversion modes. They monitor your home’s energy flow in real time and adjust the charging rate to match whatever surplus your panels are producing. When the sun is strong and the house is not drawing much, the charger ramps up. When a kettle or air conditioner kicks in, the charger dials back.
The result is that your car charges on essentially free electricity whenever the sun is out. Pair this with a solar battery and you can charge the car from stored solar in the evening too.
Solar and EV together: If you are considering both solar and an EV charger, installing them at the same time saves on electrician call-out fees and lets us design the system as a whole. Get a combined quote.
Who Should Get a 3 Phase EV Charger
Three-phase charging is not for everyone. For plenty of Australian households, a 7kW single-phase charger handles the daily routine without breaking a sweat. Here is how to work out which camp you fall into.
Three-phase charging makes sense if
- You already have three-phase power at your property
- You drive more than 150km per day and cannot wait overnight for a full charge
- You have multiple EVs in the household that need to share charging time
- You run a small business with vehicles that need to turn around during the working day
- You want to maximise solar self-consumption with a smart charger
- You are planning ahead for an EV that supports faster AC charging
Single-phase charging is fine if
- You drive under 100km most days (a 7kW charger adds about 40km of range per hour, so an overnight charge covers it)
- You are not prepared to pay for a three-phase supply upgrade
- Your EV only accepts 7kW AC anyway (check the onboard charger specification)
The future-proofing angle is worth considering too. EV manufacturers are steadily increasing onboard charger capacities. Even if your current car caps at 11kW, your next one might handle 22kW. Installing a three-phase charger now means you will not need to rewire when that happens.
Getting Started with Three-Phase EV Charging
If you are on the Mid North Coast and thinking about a three-phase EV charger, the first step is a site assessment. We check your power supply, inspect the switchboard, measure the cable run, and recommend a charger that matches your car and your driving habits.
SolaXs installs Ocular, Tesla, Goodwe and Sigenergy chargers across Port Macquarie, Taree, Coffs Harbour, and surrounding areas. Every install is completed by licensed electricians with CEC accreditation.
Book a free EV charger consultation or call the team to talk through your options.
For more information, see the Australian Government electric vehicles guide and the ARENA EV charging infrastructure.