HI WHAT SIZE EARTH CABLE IS REQUIRED FOR A DOMESTIC REWIRE. I BELIEVE IT IS 16MM FOR THE MAIN EARTH TO THE GAS AND WATER PIPES , WHAT SIZE OF CABLE IS NEEDED FOR THE KITCHEN WATER TAPS, AND THE BATHROOM BONDING?
EARTH BONDING
- Thread starter coco43
- Start date
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I hope you have notified this rewire because the questions you are asking show a severe lack of understanding of safety electrical connections and as a result you really do need someone competent to inspect and test your work.
Moving onto your questions:
There is no such thing as earth bonding, you don't ever run a 'main earth' to gas or water pipes and you do not need to bond anything in the kitchen and as of the 17th edition neither do you need to bond anything in the bathroom so long as certain criteria are met.
Before we can tell you the minimum size for your MAIN EARTHING CONDUCTOR (ie the cable between your MAIN EARTH TERMINAL and your means of earthing) we will need to know what your earthing arrangement is (TT - earth rod, TN-S - supply cable sheath, TN-CS - supply cables neutral conductor)
No need to SHOUT!
Are you doing the rewire?
You should know the answer to those simple questions!
Basically:
16mm for main earth (but this depends on other factors too)
10mm for bonding to services
No bonding needed in kitchen
Bathroom bonding depends on your configuration. Will you be working to BS7671 17th edition? If so will all circuits be RCD protected? If so, then supplementary equipotential bonding is not required in teh bathroom/
Are you doing the rewire?
You should know the answer to those simple questions!
Basically:
16mm for main earth (but this depends on other factors too)
10mm for bonding to services
No bonding needed in kitchen
Bathroom bonding depends on your configuration. Will you be working to BS7671 17th edition? If so will all circuits be RCD protected? If so, then supplementary equipotential bonding is not required in teh bathroom/
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sidetracking a bit...
although under certain circumstances equipotential bonding is no longer needed in bathrooms, does installing it or leaving it in place do any harm?
likewise, does bonding the taps and sink in the kitchen ( or leaving it in place in the case of a rewire ) actually cause any problems?
although under certain circumstances equipotential bonding is no longer needed in bathrooms, does installing it or leaving it in place do any harm?
likewise, does bonding the taps and sink in the kitchen ( or leaving it in place in the case of a rewire ) actually cause any problems?
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