Call a licensed electrician if you notice burning smells, scorch marks, crackling sounds, flickering lights across the house, repeated tripping, a tingle from an appliance, or before adding something big like an EV charger. One sign rarely tells you what is wrong. An electrician can find out safely.
Most electrical systems do their job quietly for years. When something changes, it can be hard to know whether it is a nuisance or something worth acting on. Here are seven situations where it makes sense to have a licensed electrician take a look.
None of these signs proves there is a serious fault on its own. That is the point of getting a professional check: an electrician can test and find the actual cause rather than guessing from one symptom.
1. A burning smell, scorching or discolouration
A burning or hot plastic smell around a switchboard, power point or appliance is worth taking seriously. So are brown or black marks around a socket, switch or the switchboard itself. WorkSafe's guidance to homeowners is to look out for heat discolouration such as scorching or burn marks, and if you notice it, to turn the main switch off and contact a registered electrical worker.
If you can see smoke or flames, call 111 first.
2. Lights flickering or appliances misbehaving
Lights that flicker or dim now and then can have plenty of harmless causes, including the bulb itself. What deserves attention is flickering that is new, that happens throughout the house, or that comes with appliances not working properly. WorkSafe lists abnormal flickering and several appliances not working correctly as signs to have the installation checked.
3. Buzzing, crackling or sizzling sounds
Electrical equipment can hum a little, but crackling, sizzling or arcing sounds from a power point, light fitting or switchboard are not normal. Stop using the item, and if the noise is coming from the switchboard, treat it as urgent and call an electrician.
4. Warm or damaged plugs, sockets and cords
A plug that feels hot, a socket that is discoloured, or a cord with cracked or frayed insulation should be taken out of use. WorkSafe's advice on cords and plugs is to look for fraying, cracking and signs of overheating. Replacing a damaged appliance cord is one thing, but a warm or marked socket in the wall is a job for an electrician.
5. A tingle or shock from something
If you get a tingle or shock from an appliance, a tap or a switch, stop using it. Do not try to work out the cause by poking around. An electrician can test for faults such as a leak of current to earth, which is exactly the sort of thing safety switches are designed to detect.
6. Breakers or safety switches that keep tripping
Switchboards are built to trip when something is wrong. One trip after you plugged in a faulty heater may simply have done its job. Repeated trips, trips with no obvious trigger, or a switch that will not stay on all suggest there is something to investigate. It is better to ask an electrician than to keep resetting it and hope.
7. You are planning a change or buying a home
Not every reason to call is a warning sign. Some are simply good timing:
- Adding a big load, such as an EV charger, a heat pump or an extra appliance. Your electrician can check that your wiring and switchboard suit the new equipment before it goes in.
- Renovating or extending, when you need more power points, new lighting or a changed layout.
- Buying an older home. WorkSafe suggests getting a licensed electrician or inspector to check the installation before you buy, and asking the vendor for Certificates of Compliance for past electrical work. An electrical safety inspection is one way to get that picture before you commit.
What to do while you wait
If something feels wrong, you do not need to diagnose it. A few sensible steps:
- Stop using the affected appliance or socket.
- If you notice any of the heat, smell or noise signs near the switchboard, turn off the main switch and call an electrician.
- Make a note of what you saw, when it happened and what was running at the time. It helps the electrician find the cause faster.
- Do not open the switchboard, remove covers or attempt repairs yourself.
Choosing who to call
Electrical work for payment must be done by a registered electrician with a current practising licence. WorkSafe advises homeowners to ask to see the licence and check its expiry date. For fixed wiring work, you should also receive a Certificate of Compliance. Keep it with your home records, as it may be needed for insurance or when you sell.
If you would like a licensed Dunedin electrician to look at something that has been bothering you, get in touch with Honest Electrical. We will tell you plainly what we find and what, if anything, needs doing.