2026 04 10 Electrical Safety in Your Flat — Action Required

Dear Residents,

Incident alert:

An LED light fitting in a kitchen caught fire and burnt out in a flat in A2 Building. What makes this especially concerning is that the flat's MCB — the safety switch designed to cut power during a fault — did not trip. The fire ran its course without the electrical circuit shutting itself down.

SOJ A1 A2 Managing Committee wishes to draw your attention to an important safety matter concerning electrical usage within individual flats.

What we have observed:

1. Many residents use appliances and lighting fixtures that draw more power than the wiring in their flat is designed to handle. 

2. This includes using high-wattage bulbs in standard light fittings, plugging heavy appliances into extension boards meant for lighter use, or continuing to use old appliances that have exceeded their safe working life. 

3. These practices are a leading cause of overheating, short circuits, and electrical fires.

What you must do:

1. Check that every light fitting has a bulb whose wattage does not exceed what is marked on the fitting.

2. Do not run multiple heavy appliances — AC, geyser, washing machine, microwave — on a single socket or extension board.

3. Replace any appliance that sparks, overheats, or has damaged wiring. Do not continue using it.

4. Use only ISI-marked (BIS certified) electrical fittings, bulbs, plugs, and boards. Avoid locally made or uncertified products.

5. Ask yourself: when did you last have your flat's wiring or MCB checked? If you cannot remember, that is your answer.

What is an MCB and why does it matter?

The MCB (Miniature Circuit Breaker) is the first and most important line of defence in your flat's electrical system. Think of it as a gatekeeper — the moment it senses an abnormal surge of current or a short circuit, it is supposed to trip instantly and cut off power, preventing overheating and fire. If your MCB does not trip when it should, your flat has no automatic protection against an electrical fire.

An MCB that does not trip is not a safety device — it is a false assurance. This must be tested and verified by a qualified electrician without delay.

Why might an MCB fail to trip?

There are several reasons this can happen, and all of them are serious:

1. MCB is old or worn out — Like any device, MCBs have a lifespan. An ageing MCB can lose its ability to sense and respond to faults.

2. MCB is incorrectly rated — If a higher-capacity MCB was installed than what the circuit actually needs, it will not trip on a fault that should have triggered it.

3. The fault current was too low to trigger it — Some slow-burning faults, like gradual overheating in a light fitting, can cause fire without drawing the sudden surge that an MCB is designed to detect.

4. Poor quality or uncertified MCB — Non-ISI marked or counterfeit breakers may not function reliably under fault conditions.

5. Internal mechanical failure — The internal mechanism can seize or degrade silently over time, giving a false sense of protection.

A fire does not respect flat boundaries. What starts in one kitchen can spread to an entire floor. Electrical safety is not optional — it is a shared responsibility that protects every family in this building.