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- 3 Feb 2005
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I have a question about main earth bonding to the water supply. My house has no bonding to the main water supply and has had a kitchen extension 30 years ago. The orignal stop cock has been kept in the old part of the kitchen which is now the dinning room and put under the floorboards to save space and the sink moved to the new part of the extension. Would it be Ok to use 10mm earth cable and bond it to the original stoptap as it is acessable uindr a floorboard, as the main water supply pipe enters the house here. If I was to bond it under the sink/biehind the washing machine it would be more than 60mm and there would be several "tees" going upstairs etc?