cross bond or not..?

[mc497]

Iv'e recently installed a new bathroom and Im not sure about the earthing for the bath and pipes.
The bath is steel and apart from the lights there are no electrics in the bathroom at all. The boiler is in the airing cupboard opposite and is fully crossbonded recently. Basically is it the right thing to do to simply cross bond the pipes to the basin and the bath, or is there something more or else i should do....? also what size earth wire would be required...?
Cheers.

 

[ericmark]

It will depend to what edition of BS 7671 the house is wired to. Under 17th Edition then it does not require cross bonding but that means the bathroom light with need to be RCD protected. If under the 16th Edition then the old rules still apply.
Eric

 

[ban-all-sheds]

Useful background material:

http://rapidshare.com/files/96697332/NL139supp.pdf

http://www.voltimum.co.uk/files/gb/attachments/niu/l/attachments/e169-9.pdf


IET articles on the recent changes:

Bathrooms

Supplementary Equipotential Bonding


And if your steel bath is connected by plastic pipes, read this:

Bonding & plastic pipes