Installing a bathroom shaver socket might seem like a simple job, but in New Zealand almost all bathroom electrical work is restricted by law and must be carried out by a licensed electrician. The short answer is: no, as a homeowner you cannot legally install a bathroom shaver socket yourself in NZ — and here's why that rule exists and what you should do instead.
Why Bathroom Electrical Work Is Restricted in NZ
New Zealand's electrical regulations treat bathrooms as high-risk environments because water and electricity are a dangerous combination. Under the Electricity Act 1992 and the Electricity (Safety) Regulations 2010, all electrical installation work — including fitting new sockets, moving wiring, or connecting to the mains — is classified as restricted electrical installation work. This means it must be performed by, or under the direct supervision of, a person registered with the Electrical Workers Registration Board (EWRB).
Attempting this work yourself is not only illegal but also potentially fatal. Bathrooms combine moisture, conductive surfaces, and people in a vulnerable state (wet, barefoot, touching earthed fittings). The regulations exist to protect you and your family.
What Is a Bathroom Shaver Socket?
A shaver socket (sometimes called a shaver outlet or shaver supply unit) is a special isolated socket designed specifically for use in bathrooms. Unlike a standard GPO (general power outlet), it contains an isolating transformer that separates the circuit from the mains supply, dramatically reducing the risk of electric shock. They typically provide both 230 V and 115 V outputs to suit different shavers and toothbrush chargers.
Because of this built-in isolation, shaver sockets are the only type of socket outlet permitted inside a bathroom under the New Zealand Building Code and NZS 3000 (the Wiring Rules). Standard GPOs are not allowed in bathrooms at all.
NZ Wiring Rules and Bathroom Safety Zones
New Zealand follows AS/NZS 3000:2018 (the Wiring Rules), which defines safety zones around water sources in bathrooms. These zones dictate where different types of electrical equipment can be installed:
| Zone | Location | What's Permitted |
|---|---|---|
| Zone 0 | Inside the bath or shower | Nothing electrical |
| Zone 1 | Directly above bath/shower | Only SELV (extra-low voltage) equipment |
| Zone 2 | Within 600 mm of bath/shower edge | Limited fittings (e.g. shaver sockets with isolating transformer) |
| Outside zones | Rest of bathroom | Shaver sockets, light fittings, extractor fans (all installed by licensed electrician) |
Your electrician will assess the layout of your bathroom to determine the correct placement for the shaver socket, ensuring it complies with these zone requirements.
Does a Bathroom Shaver Socket Require a Building Consent?
In most cases, installing a shaver socket is exempt from building consent under Schedule 1 of the Building Act 2004, as it is electrical work rather than building work. However, all electrical work still requires a Certificate of Compliance (CoC) issued by the licensed electrician who completes the job. This certificate confirms the work meets the Wiring Rules and is essential for insurance purposes and when you sell your home.
Always confirm with your local council if you are unsure — requirements can vary depending on your specific situation. You can find general guidance at MBIE Building Performance.
What Can a Homeowner Legally Do?
Under NZ regulations, homeowners are permitted to do very limited electrical work on their own property, such as:
- Replacing a like-for-like light fitting (in dry areas only, not bathrooms)
- Changing a light bulb or lamp
None of these exemptions apply to bathrooms. Any work in a bathroom involving electrical wiring or new socket installation must be done by a licensed electrician, full stop.
What the Job Typically Involves
When a licensed electrician installs a bathroom shaver socket, they will generally:
- Assess the bathroom layout and identify a compliant location within the zone rules
- Run new cabling from an appropriate circuit (often the lighting circuit or a dedicated circuit)
- Install the shaver supply unit (the socket unit itself, which contains the isolating transformer)
- Test the installation to confirm it is safe and compliant
- Issue a Certificate of Compliance for the work
As a guide, this is typically a straightforward job for an electrician and may take one to two hours, though costs will vary depending on your location, the complexity of cable routing, and the electrician's rates. Get at least two quotes from local tradespeople.
Choosing the Right Shaver Socket Unit
Your electrician will advise on a suitable unit, but common options available from NZ suppliers include shaver supply units with dual voltage output. You can browse options at Bunnings or Mitre 10 to get a sense of what's available, but purchase and installation should be coordinated with your electrician to ensure the unit is compliant.
When to Call a Professional
For bathroom shaver socket installation, calling a licensed electrician is not optional — it is the law. Doing this work yourself risks:
- Serious injury or death from electric shock
- Voiding your home insurance (insurers can decline claims if non-compliant work is involved)
- Fines and enforcement action under the Electricity Act
- Complications when selling your home if work cannot be certified
Find a qualified, registered electrician in your area through tradedirectory.co.nz and confirm they are registered with the EWRB before work begins.
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