Earthing kitchen sink/boiler?
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worm
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Joined: Wed Oct 03, 2007 10:36 am

Earthing kitchen sink/boiler?

by worm » Tue Oct 07, 2008 5:21 pm

What size cable is usual or the minimum requirement for earthing the kitchen sink?

Does the boiler 'combi' Glow worm also need earthing?

thanks

john9159
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Joined: Sun Nov 25, 2007 4:56 pm

by john9159 » Wed Oct 08, 2008 7:12 pm

From the mains service head you need to run 10 mm sq green/yellow sheathed conductors. On all the other supplementary bonding you would use 6 mm sq green/yellow sheathed conductors.
Yes, assuming your boiler has electrical connections within you will earth this.
Refer to DIY Doctor info at:
https://www.diydoctor.org.uk/projects/bo ... throom.htm

ericmark

by ericmark » Wed Oct 08, 2008 10:51 pm

I would have said 4mm but today I was told there is no need to earth a sink.
Also not need to add any extra earths to a combi other than that which is part of power supply.
The sink may need an earth if metal waist is used.
Eric

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