Main information
What it could mean
Noise (buzzing or clicking) at a socket usually indicates a poor internal contact in the fitting or the appliance connected to it.
Safety first
Unplug the connected appliance and check if the noise stops; if it continues with nothing plugged in, the fitting itself is failing.
Next step
A socket that makes persistent noise is worth checking before the poor contact leads to overheating.
Frequently asked questions
Could the noise come from the appliance rather than the socket?
Yes, some appliances hum on their own; unplugging it helps isolate whether the noise is from the socket or the appliance.
Is this the same as sparks at a socket?
Related: a poor contact can cause both noise and sparks, depending on severity.
Should I stop using the socket if the noise is constant?
Reasonable to avoid it until checked, especially if the noise is increasing.
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