A wall-mounted EV charger is the fastest and safest way to charge an electric vehicle at home in New Zealand. This guide covers what installation involves, what it typically costs, the safety rules your electrician follows, and which EV charger suits your car.
Quick answers
- Who can install an EV charger in NZ? A registered electrician. A fixed EV charger is not a DIY job.
- What does installation cost? A straightforward install typically costs NZ$700–$1,200 on top of the charger. Long cable runs or switchboard work cost more.
- 7.4 kW or 22 kW? Most NZ homes are single-phase, which suits a 7.4 kW EV charger. A 22 kW charger needs three-phase power and a car that can accept more than 7.4 kW on AC.
Home charging options compared
| Option | Power | Range added per hour | Notes |
|---|---|---|---|
| Portable cable, standard 3-pin socket | 1.8–2.3 kW (8–10 A) | About 6–16 km | No electrical work; slowest option |
| Portable cable, caravan socket | 3.6 kW (16 A) | About 18–25 km | Electrician installs a caravan (commando) socket |
| Wall-mounted EV charger, single-phase | 7.4 kW (32 A) | About 35–50 km | Fastest single-phase option; professional install |
| Wall-mounted EV charger, three-phase | 11–22 kW | Up to about 120 km | Needs three-phase supply and a compatible car |
Not every new EV comes with a portable charging cable. Check when you buy, and if one is not included, plan your wall charger installation before the car arrives.
Which EV charger suits your car?
Every EV has a built-in (onboard) charger that sets its maximum AC charging speed. A bigger wall charger cannot make the car charge faster than this limit.
| Popular EV in NZ | Max AC charging | Recommended home EV charger |
|---|---|---|
| Nissan Leaf (Japanese import, many models) | 3.3 kW | 7.4 kW charger works, but the car limits speed. Older imports use a Type 1 inlet, so a socketed charger needs a Type 2-to-Type 1 cable. |
| Nissan Leaf (NZ-new, 2019–2024) | 6.6 kW | 7.4 kW single-phase |
| MG4 Excite 51 | 6.6 kW | 7.4 kW single-phase |
| BYD Atto 3 (Essential) | 7.4 kW | 7.4 kW single-phase |
| Opel Mokka-e | 7.4 kW | 7.4 kW single-phase |
| Tesla Model Y | 11 kW | 7.4 kW on single-phase; a 22 kW charger on three-phase delivers up to 11 kW |
| Hyundai Ioniq 5 / Kia EV6 | 11 kW | 7.4 kW on single-phase; a 22 kW charger on three-phase delivers up to 11 kW |
Figures vary by variant and model year. Check your exact model on EVDB, New Zealand's EV database.
Most EVs sold in NZ can accept 11 kW on three-phase, but few homes have three-phase power, and upgrading can cost over NZ$5,000. For most households a 7.4 kW single-phase EV charger is the practical choice: it fully recharges most cars overnight.
See the MAXPOWER 7.4 kW and 22 kW AC EV charger
Step 1: Check your home's power supply
Look at your switchboard: a single-phase main switch takes up one space, a three-phase main switch takes up three. Single-phase supports an EV charger up to 7.4 kW; three-phase supports up to 22 kW.
Step 2: Choose the right EV charger
- Power: match it to your supply and your car (see the table above).
- Socket or tethered cable: a socket suits households with different cars; a tethered cable is quicker to use day to day.
- Load management: also called dynamic load balancing. The charger watches your household load and slows charging to avoid overloading your supply.
- Solar matching: some chargers can adjust charging speed to match your solar generation.
- App and OCPP: OCPP is an open standard that lets a charger connect to monitoring, billing or home-energy systems.
- Charge limit: an AC wall charger does not know your battery level. To stop at 80%, set the limit in the car or its app.
Before buying any EV charger, WorkSafe suggests asking the supplier for its Supplier Declaration of Conformity (SDoC).
Should I buy a wall charger from an overseas website?
It is not recommended. A wall charger is wired permanently into your home, and an overseas unit:
- may not be built to NZ electrical standards, with no evidence of compliance;
- may not be covered by the Consumer Guarantees Act or local after-sales support;
- could affect your insurance if it causes an electrical fault;
- leaves you carrying the liability if it is non-compliant.
Step 3: Get a site assessment and written quote
Ask a registered electrician to assess your home before you buy. A good written quote covers:
- Charger model and mounting position (inside the garage or outdoors)
- Cable run from the switchboard to the charger
- New circuit, protection devices and isolator
- Any switchboard upgrade or spare-capacity check
- Testing, commissioning and compliance paperwork
- GST and anything excluded
Step 4: Installation and safety rules
EV charger installations in New Zealand must meet the Electricity (Safety) Regulations 2010 and the wiring rules in AS/NZS 3000. WorkSafe's Electric vehicle charging safety guidelines set out how EV charging stations should be selected and installed, and a registered electrician should follow them.
- Residual current protection: an RCD cuts the power if it detects current leaking where it should not. WorkSafe identifies a Type B RCD as the most appropriate for EV charging. Some chargers include built-in DC fault detection; your electrician confirms the right protection for the charger you choose.
- Dedicated circuit: the EV charger should be on its own circuit from the switchboard.
- Paperwork: your electrician issues a Certificate of Compliance (CoC) for the work. Keep it with your house records.
- No adaptors or extension leads: only use adaptors supplied by the vehicle or charger manufacturer.
What affects EV charger installation cost in NZ?
A straightforward installation typically costs NZ$700–$1,200, plus the charger itself. Some suppliers offer the charger and installation as one package price.
- Distance from the switchboard: the single biggest cost factor.
- Switchboard capacity: an older or full switchboard may need an upgrade.
- Three-phase: 22 kW installs need more cabling and protection, and adding three-phase supply to a home can exceed NZ$5,000.
- Mounting: outdoor, pedestal or trenching work adds labour and materials.
- Smart features: load management may need an extra current sensor at the switchboard.
Figures in this guide are indicative. Your written quote is the price that counts.
Frequently asked questions
Can I charge from a normal wall socket instead?
Yes, with a portable cable, but it adds only about 6–16 km of range per hour. A wall-mounted EV charger is several times faster and designed for the sustained load of daily charging.
Do I need three-phase power for a home EV charger?
No. A single-phase 7.4 kW EV charger fully recharges most cars overnight. Three-phase only helps if your car accepts more than 7.4 kW on AC and you already have, or are willing to pay for, a three-phase supply.
Will a 22 kW charger charge my car faster?
Only if your car's onboard charger accepts more than 7.4 kW and your home has three-phase power. Many popular EVs top out at 6.6–11 kW on AC.
Can I install an EV charger myself?
No. Fixed EV charger installation is electrical work that must be done by a registered electrician, who certifies it.
Should a business or fleet use AC or DC charging?
AC chargers suit cars parked for several hours, such as staff and overnight fleet parking. DC fast chargers suit short stops and high-use sites. See our EV charging planning guide or compare all EV chargers.
Get an EV charger installation quote
Tell us your location, vehicle, switchboard type (single or three-phase) and where you want the charger mounted. We will recommend the right MAXPOWER EV charger and an installation scope for your site.
Sources: EVDB – EV home chargers in New Zealand and EVDB vehicle pages; WorkSafe New Zealand, Electric vehicle charging safety guidelines; manufacturer specifications. This guide is general information, not electrical advice; your registered electrician confirms the requirements for your property.