Test and tag (AS/NZS 3760) explained for Australian businesses

"Test and tag" is one of those phrases people in business have heard, generally know they're meant to do, and often have a slightly fuzzy understanding of. The tag is the visible bit (a coloured cable tie or sticker on the power lead with a date on it), but the testing behind that tag is what actually matters. A tag without a proper test is just decoration, and won't help you if WorkSafe knocks on the door after an incident.

This is a plain-English explanation of test and tag under AS/NZS 3760: what it covers, when it's required, who's allowed to do it, how often equipment needs to be re-tested, and the common assumption that's tripped up plenty of business owners — that "everything's tagged" is the same as "everything's safe".

What test and tag actually is

AS/NZS 3760 is the Australian/New Zealand standard for in-service safety inspection and testing of electrical equipment. The full title gives the game away: this is about portable equipment that's already in use, not about new wiring being installed.

In practice, it covers anything you plug into a power point at work — kettles, microwaves, computers, monitors, printers, vacuum cleaners, extension leads, power boards, hand tools, kitchen appliances, hair dryers, point-of-sale terminals, charger bricks. If it has a flexible cord and a plug, AS/NZS 3760 applies.

A compliant test under AS/NZS 3760 has two parts:

1. Visual inspection. Damaged plug pins, cracked cases, exposed conductors, frayed cords, melted insulation, missing strain reliefs, signs of overheating, modifications, dodgy repairs. Anything that fails the visual check fails the whole test — full stop. You don't get to "tag it as safe" because the electrical readings came out clean.
2. Electrical tests. Performed with a Portable Appliance Tester (a PAT — the box of electronics with a couple of probes and a power outlet on it). The PAT runs a sequence: earth continuity (Class I appliances only, where the metal case is bonded to earth), insulation resistance, polarity check on leads and power boards, and earth leakage where applicable.

Once the appliance passes both stages, the tester attaches a tag with their identifier, the date of test, the next test date, and a pass/fail indicator. The tag goes around the cord near the plug, and the result is recorded in a register.

That's the whole job. It is genuinely simple — which is part of why it's so often done badly.

Don't confuse this with verification testing on a new install

This is the single most common mix-up, even among people in the trade. AS/NZS 3760 and AS/NZS 3017 are different standards covering different things:

• AS/NZS 3760: in-service testing of portable equipment that's already plugged in and being used. The kettle, the monitor, the extension lead.
• AS/NZS 3017: verification testing of a fixed electrical installation that's just been built or altered. The new switchboard, the new sub-circuit, the rewired shop fitout. This is what your electrician does before issuing the Certificate of Electrical Safety (COES) on a new job.

If someone tells you they "test and tagged your new switchboard", they've either picked the wrong words or done the wrong test. New fixed installations get verified to AS/NZS 3017 and certified via the appropriate state-based compliance certificate (COES in Victoria, CCEW in NSW, Form 13/14 in Queensland, and so on). Portable appliances plugged into that installation get tested to AS/NZS 3760 on an ongoing basis after.

Both are real obligations. They're just not the same obligation, and one doesn't substitute for the other.

Why it's required — the legal driver

Here's the thing that surprises a lot of people: AS/NZS 3760 itself is a standard, not a law. The legal force comes from state-based occupational health and safety legislation.

Every state and territory has work health and safety regulations that require employers ("PCBUs" in WHS-speak — Persons Conducting a Business or Undertaking) to ensure the safety of plant and equipment, including electrical equipment. AS/NZS 3760 is the deemed-to-satisfy way you discharge that duty for portable electrical equipment.

The relevant state regulators:

• Victoria: WorkSafe Victoria, under the Occupational Health and Safety Act 2004 and the Occupational Health and Safety Regulations 2017.
• NSW, ACT, QLD, NT, Tasmania, SA: SafeWork in each jurisdiction, under harmonised WHS legislation.
• WA: WorkSafe WA under the Work Health and Safety Act 2020 (WA harmonised in 2022).

The phrasing differs slightly across jurisdictions, and not every business in every state is strictly required to test and tag every appliance. But the underlying obligation — that you must ensure your workplace electrical equipment is safe to use — is universal. AS/NZS 3760 is the recognised method of demonstrating you've met that obligation. If something goes wrong and you can't show a current test register, you're effectively trying to defend a duty-of-care claim with no evidence.

For some industries the requirement is explicit. Construction sites under AS/NZS 3012 must have all portable equipment tested every three months. The hospitality and food-prep industries have implicit requirements through commercial kitchen environments being classed as harsh. Hire equipment is required to be tested before each hire. Beyond those, every workplace falls under the general duty.

Who is allowed to do it

This is another common misunderstanding. You do not need to be a licensed electrician to test and tag.

AS/NZS 3760 requires that the person doing the testing is "competent" — meaning they've been trained in the use of the PAT, the visual inspection criteria, and the recording requirements. This is typically a one-day course delivered by a registered training organisation, ending in a Statement of Attainment (commonly aligned with the unit UEERL0003 — Conduct in-service safety testing of electrical cord-connected equipment and cord assemblies).

So your options are:

• Train an in-house staff member. Cost-effective for businesses with a lot of equipment. The trained person becomes your tester for that workplace.
• Engage a dedicated test-and-tag contractor. Common for offices and small businesses. They turn up, work through your equipment, leave you a register and tags.
• Engage an electrical contractor who offers test and tag. Often paired with annual safety inspections, switchboard checks and RCD testing as a single maintenance visit.

What you can't do is have an untrained person tag equipment based on it "looking fine". The tag has to record the tester's identifier, and that identifier has to be traceable to a competent person.

How often equipment needs to be re-tested — Table 4 intervals

The actual test interval depends on the environment the equipment is used in, not the equipment itself. Table 4 of AS/NZS 3760 sets the intervals. The principle: harsher environments need more frequent testing, because cords get damaged faster and earthing degrades faster.

Environment	Class I (earthed)	Class II (double-insulated)	Portable RCDs
Construction and demolition sites (per AS/NZS 3012)	3 months	3 months	Push-button monthly, time test every 12 months
Factories, workshops, warehouses, places where equipment is moved or subject to flexing	6 months	12 months	6 months / 12 months
Commercial kitchens, hospitality back-of-house, laundries	6 months	12 months	6 months / 12 months
Offices, retail, schools, hotels (front-of-house), libraries, places where equipment is rarely moved	5 years	5 years	6 months / 12 months
Hire equipment	Before each hire	Before each hire	Before each hire
Repaired, serviced or second-hand equipment	After repair, before return to service	After repair, before return to service	After repair

Reading the table. "Class I" is anything with a metal case bonded to the earth pin — kettles, toasters, irons, most kitchen appliances, vacuum cleaners, hand power tools. "Class II" is double-insulated equipment marked with the square-in-a-square symbol — most modern phone chargers, hair dryers, plastic-cased appliances. Portable RCD is the in-line residual-current safety device used as supplementary protection on construction sites and outdoor work.

A few practical observations:

• The five-year interval for offices is real and was introduced in the 2010 revision of the standard. A lot of office managers test annually out of habit or supplier convenience — which is fine and arguably safer, but not legally required at that frequency under AS/NZS 3760 alone. Check your insurer's policy and any tenancy agreement, which may impose tighter intervals than the standard.
• Hospitality is the trap. Front-of-house cafe equipment is sometimes treated as "office" — five years — but the actual cooking and washing-up areas are commercial kitchens, six to twelve months. The same business often needs both intervals on different appliances.
• Construction sites are non-negotiable. Three months for everything, every time. AS/NZS 3012 governs the site, and head contractors enforce it through site-induction documentation. No tag, no plug-in.
• Hire equipment is its own category. Test before every hire — not "every 3 months". The hire company carries the obligation, and the inspection record sits with their hire ticket.

What the tag means — and what it doesn't

A pass tag means: at the moment this appliance was tested, it passed visual inspection and the electrical tests. It says nothing about what's happened since.

This is the misconception that gets people hurt: a current tag is not a guarantee of present-day safety. If an extension lead was tagged in January and got run over by a forklift in March, the January tag is meaningless. The tag is a record of a point-in-time check, not an ongoing certification.

Two practical implications:

1. Visual checks remain the user's responsibility every day. Anyone using a piece of electrical equipment should be looking at the cord, the plug, and the case before they use it. A frayed cord on a tagged kettle is still a frayed cord. Pull it from service and re-test (or bin it).
2. The tag's validity ends if the equipment is damaged, modified or repaired. Repairs require a re-test before return to service, regardless of how much "test life" the existing tag has.

The other thing the tag doesn't do is replace RCD protection. Test and tag verifies the appliance. The fixed RCD on the circuit it's plugged into protects you if the appliance fails between tests. Both layers are required — they cover different failure modes. See our reference on safety switches (RCDs) for why.

What records you have to keep

AS/NZS 3760 requires a register containing, for each tested appliance:

• A unique identifier for the appliance (asset number, serial number or unique tag ID)
• Description and location
• Date of test
• Result (pass / fail)
• Tester's name and identifier
• Next test date

Most modern test-and-tag operators run barcode-scanning PATs that auto-populate a digital register and email a PDF after each visit. Keep the register for at least seven years — partly to satisfy any regulator inquiry, partly because insurance claims can reach back several years and you'll want the records.

What this looks like in practice

A typical fifteen-person Melbourne office has one tester on site for half a day every five years (desk equipment) and the same tester back every six to twelve months for the kitchenette and any cleaner's gear. A cafe is six-monthly on Class I front-of-house and kitchen equipment, twelve-monthly on Class II. A construction site is three months for everything, on rolling basis as crews and equipment move between sites.

The amount of work scales with the equipment count, not the business size — a two-person physiotherapy clinic with a lot of plug-in modalities can have more appliances than a fifteen-person open-plan office.

How Millar Electrics handles it

We run test and tag as part of our maintenance contracts and as standalone visits. For commercial clients we typically combine it with an annual safety inspection — switchboard thermal scan, RCD time-tests, emergency lighting check, smoke alarm test — so you have a single visit that satisfies AS/NZS 3760, AS/NZS 3019 periodic verification, and AS 2293.2 emergency-lighting maintenance in one go.

If you've inherited a workplace where the tags look ancient, or you're not sure which equipment falls into which testing interval, that's a normal place to start. We'll do an initial sweep, build the register from scratch, and set you up on the correct cycle for the way each part of your business operates. From there it's a calendar entry, not a compliance puzzle.

We're a Victorian Registered Electrical Contractor (REC-22849), based in Nunawading, working across Melbourne's eastern suburbs and the wider metro area.