A house built in 1990 was wired for a household that owned one television, one fridge and zero air-conditioners. That same house today might run four aircon units, two water heaters, an induction hob and a dozen chargers. The wiring did not grow with the load. These five checks tell you how well it is coping — no tools required beyond your senses and one button.
Check 1: Press the test button on your ELCB
Open your distribution board cover and find the breaker marked TEST (the ELCB or RCCB). Press it. The main switch should snap off instantly. If nothing happens, the one device designed to stop electrocution in your home is not working — and you should treat that as urgent. Reset everything after the test and note that clocks and routers will need a moment.
Do this test every three months. It takes ten seconds and it is the single highest-value safety habit a homeowner can have.
Check 2: Touch your switch plates and socket faces
After an evening of normal use, run your hand over the switches and sockets you use most. All of them should be room temperature. Warmth means resistance, and resistance means a loose or corroded connection arcing behind the plate. Brown staining around a socket tells the same story in a later chapter.
Check 3: Listen and smell at night
With the house quiet, stand near the distribution board and listen. A faint buzz that comes and goes with load can indicate a failing breaker or loose busbar. A fishy or acrid smell near any socket or the DB — even occasional — is overheating insulation and belongs in the "call now" category below.
Check 4: Count your extension cords
Walk the house and count every extension strip and multi-plug adapter in permanent use. Each one is a vote for more fixed sockets. More importantly, check what is on them: water heaters, aircons, ovens, kettles and irons should never run through an extension. If a high-draw appliance shares a strip with anything else, separate them today.
Check 5: Read your breaker labels
Are the circuits in the DB labelled at all? Can you tell which breaker kills the kitchen? In an emergency — a sparking appliance, water into a socket — the difference between "flip the right breaker in five seconds" and "flip everything and hunt" matters. If your DB is a mystery, labelling it is a cheap add-on to any electrical visit.
Three findings that mean: stop and call
- The ELCB test button does nothing. Your shock protection is offline.
- Any socket, switch or plug is hot rather than warm, or shows scorch marks. Arcing has started.
- Breakers trip repeatedly on the same circuit. The breaker is answering a real fault; resetting it repeatedly just retries the fire.
None of these are DIY territory, and all of them are quick work for a registered wireman with a test kit. Our full inspection covers every check above plus earth resistance, insulation readings and a written report — under two hours for a typical terrace house.