Discuss Understanding the new regulation regarding Main Bonding. in the Electrical Forum area at ElectriciansForums.net
It's almost impossible to eliminate parallel paths, if there's a combi for example the gas service will be mechanically joined to the water pipes. The test for extraneousness (I just made that word up) is generally unreliable and I prefer to combine it with a visual assessment of how likely a water pipe is to become extraneous when entirely within a building. Unless the building is steel framed the likelihood is minimal.
he has every right to be miffed, as Sitting Bull and the S0iux took all the credit for wiping out Custard and his blue bellies at Little Big HornI don’t think I’d like to be the one taking that photo - he seems a little miffed!
no. the figure is 22K Ohms. 7.67K is the value of a L-E earth fault or leakage that would trip a 30mA RCD.I thought aslong as it exceeded 7.67k ohms it is not to be considered an extraneous conductive part.
no. the figure is 22K Ohms. 7.67K is the value of a L-E earth fault or leakage that would trip a 30mA RCD.
no. the figure is 22K Ohms. 7.67K is the value of a L-E earth fault or leakage that would trip a 30mA RCD.
Exposed metal that is likely to become live under fault conditions will be or should be earthed, that is a requirement for an exposed conductive part. That is nothing whatsoever to do with bonding.You can't earth plastic end of story. don't be a dick.
Do you earth isolated sections of any sort of pipe.... water/oil etc etc??
My answer is probably not, it's your call.
BUT BUT
I have 2 tests to ask
1 IS IT EXPOSED METAL( OF ANY KIND) THAT HAS THE POTENTIAL TO BECOME ALIVE??????
If yes then the answer must be to earth bond it
2 What would be your defense in the coroners court?
Remember the regs are designed to confuse sparkies by legal numpties.
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