Testing and tagging at home: what is useful and what is theatre

Testing and tagging is a workplace idea that keeps turning up in Adelaide kitchens like a guest who has read the wrong invitation. On a building site or in a school, portable appliances move between rooms, get dropped, and get used by people who did not buy them. A competent person tests them on a schedule, slaps a tag on the lead, and takes the damaged ones out of service. At home, the kettle has lived on the same bench since the last rental, the only person who uses the drill is you, and a numbered sticker on the toaster is not a personality.

The useful half of the idea survives the trip from the workplace. Look at cords. Retire damaged gear. Use residual current protection. Do not run a garden on an indoor lead. The theatrical half is the annual liturgy of tags on every bedside lamp, sold as if AS/NZS 3760 were a house rule. It is not. South Australia does not require homeowners to tag domestic appliances. The Office of the Technical Regulator and Consumer and Business Services care about prescribed electrical work and licences. They do not care whether your sandwich press wore a yellow wrap in March.

This is a sorting essay: what a visual check can do, what a portable RCD is for, and when you should stop playing inspector because the problem is in the wall.

What workplaces are actually doing

The Australian standard that governs in-service testing of electrical equipment is a workplace document. It assumes a responsible person, a test interval, and gear that leaves the building. Construction, hire shops, schools, offices with a kitchen drawer of forgotten jugs: those places earn their tags. The tag is a record that a test happened on a date, not a blessing that the appliance will behave until the date printed next to it.

People bring that ritual home after a job on a site at Edinburgh. They have seen a PAT tester and a failed lead, and they conclude that love is a fluke tester and a roll of vinyl. The conclusion misses the rest of the system: training, isolation, a quarantine pile, and a switchboard that is not also a museum.

If you run a business from a Goodwood villa — a salon, a Thebarton workshop, a home daycare — you may have crossed back into workplace territory. That is a different duty. It is not an excuse to start opening live appliances on the kitchen table.

The visual check that is actually worth doing

A homeowner can see a surprising amount without instruments and without touching live parts.

• The cord: splits, kinks, flattened sections, tape, chew marks from a dog or a toddler, heat damage near the appliance gland.
• The plug: bent pins, a cracked body, discolouration, a loose cable grip, a rewire that looks like it was done with a butter knife.
• The appliance: a burnt smell, a warm plastic case when it should be cool, a rattling earth pin, moisture where moisture should not be, a kettle base full of scale and a scorched skirt.
• The lead on the floor: coiled under a rug, pinched in a door, run through a wet laundry, used outdoors when it was sold as indoor.

Any of those is a retirement. Do not mend a split cord with tape. Do not keep using a charger that is too hot to hold. A crack in a powerboard is not “only the plastic”.

A visual check will not see a broken earth inside a tool that looks fine. For a household vacuum, that limit is acceptable if the circuit has an RCD. For a hired jackhammer, it is not. Hire shops tag for a reason. Do not use the tool if the lead is already wounded when you get it home.

Extension leads, powerboards and the Adelaide backyard

Extension leads are where domestic theatre and domestic risk meet. A long cheap lead from a kitchen window to a birthday tent in a Burnside garden is a classic. So is a daisy-chain of powerboards behind a Mawson Lakes television. So is a “heavy duty” lead coiled in the sun at Salisbury because someone did not want to buy a longer one.

Uncoil leads that are carrying load. A coil is a heater. Use outdoor-rated leads outdoors. Keep connections off the grass and out of the sprinkler arc. Do not run leads through doorways that close on them. A portable RCD — a weatherproof unit in the lead, or a plug-in block — is worth having if you are using temporary power outside, or if the house board still has no residual current device. It is a supplement. It does not make an indoor lead into an installation. It does not make a paddling pool electrically boring.

Powerboards need space, a switch you can reach, and an absence of daisy-chains. The surge-only strips that look like protection are not residual current devices. If the kitchen circuit already has an RCD or RCBO, the board is a distributor, not a saviour. If the laundry board is still fuses, read fuse boards to RCD upgrades before you buy a third strip for the study.

Glenelg and Henley Beach eat the screws in weatherproof connectors. A lead that sat a summer on a balcony can look intact and still fail an earth test. Retire it without a memorial service.

Portable RCDs, socket testers and the drawer of gadgets

A portable residual current device is a small, good idea. It belongs in the car with the tools, on the hired grinder, on the Christmas lights if you do not trust last year’s box. Test it with its own button. If it does not trip, it is sculpture. It is not a reason to delay a licensed board upgrade, and it is not a reason to work around a house RCD that keeps tripping. A trip is information. The longer version is in safety switches and RCDs.

Socket testers — the three-LED plugs — will tell you that a powerpoint is missing an earth or has a swapped polarity, sometimes. They also lie, or at least simplify, on circuits with residual current devices and on some MEN arrangements. A strange reading is a reason to stop using the point and call a licensed electrician. A green reading is not a certificate. It is not permission to ignore a warm plate or a tingle on a tap. Those signs still mean what they meant in warning signs of an electrical fault.

Cheap insulation testers in untrained hands are how homeowners start working live without meaning to. Do not open a toaster or a powerboard. Prescribed work and live work are the line the Office of the Technical Regulator drew.

A tag on a kettle is not a test of the house. The house is tested at the board, on a circuit you have not been invited to open.

When to pay someone, and what you should see

Pay a competent tester if you have a shed full of tools that earn money, a home business, or a pile of hired gear you want checked before a job. Pay a licensed electrician if the problem might be in the fixed wiring: trips with nothing plugged in, tingling metal, burning-dust smells, lights that duck when the kettle boils, a board that still uses fuse wire. Those are installation problems. A tag on the sandwich press will not find them.

A licensed electrician will isolate, test and, if they alter the installation, leave a Certificate of Compliance. Consumer and Business Services should be able to find their licence. They should not sell you a tagging package for the bedside lamps as if it were a legal duty. They might, reasonably, suggest residual current protection, a label that matches the rooms, or retiring a powerboard that has seen things. That is installation advice. It belongs with the rules hub and the rest of home electrical safety.

After a storm, the useful checks are still visual: wet boxes, a meter panel that does not look right, appliances that smell different when they come back on. SA Power Networks owns the street. You own the decision not to switch everything on at once. Look, unplug, isolate if you can do so without removing covers, and do not invent a test procedure on a wet floor.

The calm version is almost disappointing. Look at the cord. Throw out the broken things. Keep outdoor work on outdoor leads and a portable RCD if the job is temporary. Press the test button on the house safety switch every month. Hire a licensed electrician when the wall is the problem. The workplace can keep its vinyl wrap. The house needs a habit, a protected circuit, and the humility to stop when something is hot, loud or wet.