- Does it spark when you switch it on?
- Don't ignore it
- Sometimes loose connection and sometimes danger warning?
Electrical Safety: It is very common to press a switch to turn on the light in the house. However, if there is a spark, a crackling sound or a burning smell when the switch is pressed, it should not be ignored. Sparking is not necessarily dangerous every time; But certain symptoms may indicate a serious electrical fault.
When can a light spark in a switch be normal?
When a switch is turned on or off, its internal contacts connect or break an electrical circuit. Very short in this process Electrical Arc may occur. It is often so subtle that it is not even visible from the outside.
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Some older types of bulbs, higher wattage appliances, or switches that control more loads may cause minor arcing. The usual light 'click' sound when the switch is pressed may also be normal.
When to understand that there is danger?
If there is a clear and large spark coming out of the switch, frequent sparking or a loud crackling sound, it should be looked at seriously.
In addition, it is safe to stop using the switch if there are symptoms of burning smell, smoke, discoloration of the switch or heating of the switch plate.
What could be the reason behind the sparking?
If the wire or terminal connection on the back of the switch is loose, the current will not flow properly and arcing may occur. This problem can also be caused by the metal contacts in the switch becoming damaged or worn over time.
Besides, extra load on the circuit, bad or old wiring, damaged switch as well as wrong connection of dimmer or smart switch can also cause sparking problem.
What to do if you see a spark from the switch?
If there is frequent sparking from the switch accompanied by smoke or a burning smell, turn off the breaker of the circuit concerned and do not use the switch again. Avoid switching the switch on and off repeatedly to check for problems.
Attempting to handle the wires by opening the switchboard yourself can be dangerous. Do not touch wires or terminals especially if you are not sure that the power supply is completely off.
When to call an electrician?
If the switch or wire shows signs of burning, the circuit breaker trips repeatedly, there is a burning smell, the switch heats up abnormally, or sparking continues even after the switch has been replaced, it should be checked by a qualified electrician. In case of electrical failure, it is safer to check in time than to ignore minor symptoms.
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