Recent content by cmct

If your house has metallic service pipes coming into the house then they must have an earth wire run from the consumer unit to them at a point "as near as possible to the point of entry of the services to the premises but on the consumers side of any insulating section (for water). For gas, the...

Your "buzzing " will be coming from the switch and the transformer. The buzzing is down to the type of circuit which operates the dimmer switch (SCR) and transformers are noisy anyway, due to the way they operate.