AS/NZS 3760 in plain English
AS/NZS 3760 is the joint Australian and New Zealand Standard for the in-service inspection and testing of electrical equipment. In everyday terms, it describes how to check that electrical equipment already in use, such as appliances, leads, power tools and extension cords, is safe to keep using. It is a standard, and a standard is not the same thing as legislation.
That distinction is the most important thing to understand about it. WorkSafe NZ explains that testing and tagging is one useful way to check electrical equipment is safe, but that testing and tagging is not mandatory. What is legally required is that equipment is electrically safe and maintained in a safe condition. AS/NZS 3760 is one option a person conducting a business or undertaking (PCBU) can choose to follow in order to demonstrate they are meeting that duty. Think of it as a practical framework for good practice rather than a rule that applies automatically to every plug in the country.
The four ideas people blur together
Compliance conversations go wrong when law, standards and guidance are treated as the same thing. Keeping them separate makes the whole subject much clearer.
- Law: the Health and Safety at Work Act 2015 sets the general duty on a PCBU to ensure health and safety so far as is reasonably practicable. The Electricity (Safety) Regulations 2010 apply to appliances, leads and hand-held tools connected to electricity.
- Standard: AS/NZS 3760 sets out in-service inspection and testing practice. It is not law. It is one way a business can show it is meeting its duty.
- Regulator guidance: WorkSafe NZ publishes guidance on what safe practice looks like. Guidance helps you understand the law, but it is not itself legislation.
- Best practice: the choices your workplace makes about equipment, environment and risk.
For construction and demolition work there is a companion standard, AS/NZS 3012, which deals with the safe use of electricity on site. Most other workplaces look to AS/NZS 3760 as their main reference if they decide to run a testing programme.
If you want a broader grounding first, our explainer on how AS/NZS 3760 is understood in New Zealand is a useful companion to this guide.
What the Standard actually covers
Broadly, AS/NZS 3760 deals with electrical equipment that is already in service rather than equipment at the point of sale. It covers how equipment should be inspected and, where testing is carried out, what gets checked, how the outcome is recorded, and how it is communicated back to the people using the equipment. A programme built on the Standard usually has two layers:
- Visual inspection of the item and its plug, cord and casing for damage, along with a check that it is being used as intended.
- Electrical testing of the parts you cannot see. Depending on the class of equipment, this can include checks such as earth continuity, insulation resistance and leakage current.
A fault can be invisible. A cord can look perfectly fine and still be damaged inside, which is exactly why a visual check on its own is not the whole answer. The Standard also deals with how the result is marked on the item, which is where tags and labels come in.
Why there is no single testing interval
People often want one number they can apply to everything. The honest answer is that there is not one. WorkSafe puts it plainly: how often you test and tag depends on the nature of the equipment and the workplace. Electrical equipment used on a construction site, outside and in damp conditions, has a very different risk profile from a computer in an office.
A power tool that is thrown in the back of a ute every day is not the same as a printer that never moves. A kitchen appliance in a busy cafe sees more wear than a desk lamp in a meeting room. That is why frequency is best treated as a risk decision the PCBU makes, informed by the equipment, the environment, how roughly the item is treated and who uses it. The Standard offers guidance you can apply to your situation, and a trained worker or testing provider can help you interpret it, but nobody can honestly hand you one interval that fits every item on every site.
Our article on how often to test electrical equipment walks through that decision in more detail.
A practical framework you can adopt
If you decide to build a programme around AS/NZS 3760, a sensible sequence looks like this:
- Build a register of the electrical equipment you have. Include the items that are easy to forget, such as extension leads, chargers and kitchen appliances.
- Classify the environment each item is used in: dry office, workshop, outdoors, damp, dusty or high-traffic.
- Set routine visual checks that happen often, because a visual check is quick and catches obvious damage early.
- Decide whether you will test, and at what interval, using the Standard as guidance rather than a rigid rule.
- Confirm RCD protection where it is needed. This is a separate control from testing and tagging, and equipment still needs RCD protection in certain circumstances, such as outside in the damp, whether or not it has been tested and tagged.
- Record what was checked, when, by whom, and with what result.
- Handle faults promptly: remove the item from use, then have it repaired and tagged by a licensed electrical worker, or replace it.
Who can do the testing
The gate is knowledge and skill, not a licence. Testing does not need to be carried out by a registered electrical worker, but whoever does it must have the knowledge and skills to do the task correctly and to understand the Standards involved. A PCBU can either buy testing equipment and train a worker, or engage a third party. Only a registered electrical worker is able to repair any faults the testing reveals, which is why many businesses split the job: visual checks and RCD button tests in-house, formal testing and repairs through a provider.
That choice is covered in more detail in can you test and tag your own equipment.
Common mistakes
- Treating AS/NZS 3760 as if it were law and assuming testing is compulsory everywhere.
- Assuming a tag guarantees future safety. Testing gives a snapshot at the time it is done; it does not predict what happens tomorrow.
- Relying on tags alone and skipping simple daily visual checks.
- Overlooking RCD protection, which is a separate control that applies in its own right.
- Keeping no records, so there is nothing to show what was checked and when.
- Assuming only electricians can test, and paying for work that a trained worker could safely do.
When to bring in a professional
Many workplaces run their own visual checks and RCD button tests and engage a provider for periodic testing and any repairs. That split suits sites with a manageable register. Larger or multi-site businesses often have the provider handle the formal testing, tagging and reporting as well, because keeping a scattered register consistent across several locations is genuinely difficult to do in-house. If your equipment list is long, spread over several sites, or includes specialised gear, a provider removes a lot of administrative risk.
Records turn effort into evidence
The detail that turns a testing programme into genuine evidence is the record. A register that shows the asset, its location, the test date, the result, who did the work and when it is next due gives you a clear picture of your equipment, and it makes it straightforward to show an auditor or an insurer what you have actually done. That is the subject of our guide to electrical compliance reporting.
The bottom line
AS/NZS 3760 is a genuinely useful standard, and for many New Zealand workplaces it is the clearest way to structure a sensible electrical safety programme. But it works best when it is understood for what it is: an option a PCBU can choose, not a law that tests every appliance in the country. Match the effort to the risk, keep records that show your reasoning, and treat testing as one layer alongside visual checks and RCD protection rather than the only control that matters.
If you would like help applying it to your workplace, Test & Tag Kiwi provides workplace test and tag services across New Zealand, from single-site registers to multi-site programmes. Request a quote and we will help you work out a sensible approach for your equipment and your environment.
