Air fryers, kettles and toasters: is your kitchen circuit keeping up?

Most power points are wired in groups, with several outlets on one cable run back to one circuit breaker at the switchboard. In many older Melbourne homes every bench point sits on the same circuit, sometimes shared with the dining room, the laundry or a back bedroom. The oven and cooktop usually have their own circuit; the benchtop appliances don't.

That made sense when the bench held a kettle, a toaster and a radio. Today the same bench may carry an air fryer, a coffee machine, a microwave and a sandwich press, with a dishwasher underneath, and several run at once in the morning rush. Appliances that heat use the most power: check the rating labels and you'll find a kettle or air fryer draws about as much as a portable heater.

A circuit breaker switches a circuit off when more current flows than its cable can safely carry. If the bench power drops when the kettle, air fryer and toaster are all going, that's usually overload, and the breaker is doing its job. Unplug what was running, reset it once and run the appliances one or two at a time. If it trips again with little running, leave it off and have it tested.

Don't fix nuisance tripping with a bigger breaker. The breaker is sized to protect the cable in the wall, and a larger one lets that cable carry more than it was designed for and run hot. The answer is spreading the load, by moving the air fryer or coffee machine to a point on another circuit or adding a circuit to the kitchen.

If it's the safety switch that trips rather than a circuit breaker, it's a different fault. Energy Safe Victoria says a safety switch detects a problem that may put people at risk, such as current leaking to earth, often from a worn kettle or toaster element. Try the appliance on another circuit; if it trips there too, the appliance is the problem.

A power point that feels warm, smells of hot plastic or fish, has brown marks around the pins or crackles when the kettle runs is a more serious sign than a breaker trip. It usually means a loose or worn connection at the plug, in the outlet or at its terminals, making heat at normal current. A circuit breaker doesn't detect that, because the current isn't high enough to trip it.

Stop using that point, unplug what's in it and have it checked. Energy Safe Victoria says not to touch or try to repair a loose, cracked or broken power point; cover it and have a licensed electrician replace it. Discoloured or loose plug tops and damaged appliance leads should be replaced too.

A power board doesn't add capacity; it shares one outlet between more plugs. Running a kettle and an air fryer through one board puts both loads through a single plug and outlet, which is how boards and points end up warm. On a bench with water, crumbs and grease nearby, a board is a poor long-term answer.

If the bench has more appliances than points, the fix is more fixed outlets in the right places: one for each appliance that heats, spaced so leads don't trail across the cooktop or sink. Swapping singles for doubles helps, but only if the circuit behind them has capacity for what you plan to plug in.

Adding a kitchen circuit means running new cable from the switchboard to a group of bench points, so the morning load is split between two circuits instead of one. It's worth considering when the breaker trips regularly, when the kitchen shares a circuit with other rooms, when you add an island bench, or when you're renovating and the walls are open anyway.

Energy Safe Victoria notes the Wiring Rules require additional safety switch protection when existing installations are altered, so the electrician checks how new and altered circuits are protected. An older switchboard may need space or an upgrade to take the new circuit. You get the price before work starts, and a Certificate of Electrical Safety when it's done.