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practical need for supp bonding in bathroom

wallywombat
Can anyone suggest a realistic scenario where supplementary bonding would be required in a bathroom or other 701 location? I'm failing to think of one, although I may be overlooking something blindingly obvious.


It can be omitted as long all three of these are satisfied: ADS in time; RCD present; any extr-c-p connected to main bonding.


If ADS can't be done in time by either MCB/RCD then its not legal anyway.

RCD has to be present anyway.

Water and gas pipes etc should already be main bonded if they introduce a potential.
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    In my house, I once measured between two radiators 3m apart connected via plastic pipe. It was around 300 kOhm. This had the usual rust inhibitors, and it is a soft water area.
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    In my house, I once measured between two radiators 3m apart connected via plastic pipe. It was around 300 kOhm. This had the usual rust inhibitors, and it is a soft water area.
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