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EICR Gas bond

aligarjon

HI guys.   I did an EICR this morning on a small domestic bungalow that was completely renovated/converted 6 years ago. There is no main bond to the gas . The water is all plastic.  The incoming gas main to the external meter is plastic.  The sole gas pipe into the property is buried in the floor screed and is obviously copper. This is a new gas pipe done at the same time as the other works.   My gut reaction is it should have been bonded as it's basically buried in the structure but then i can't see exactly how the pipe is run, there is a plastic insert through the wall but i don't know if it continues through the screed. Where it pops up out of the screed there is no plastic pipe, just bare copper.  As yet i have been unable to get access to the original EIC.  The rest of the electrical work has been done very nicely and it looks like they new what they were doing.   Any thoughts please.

 

Gary

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    The question is can it introduce an external potential (that is not already present). As a concrete floor may be conductive the answer has to be no so bonding is not required, although it would probably do no harm. What appliance does it feed, because if a boiler or cooker with electric ignition it is probably bonded already, and the current cannot be very large so some 10mm is excessive? Is it reasonable to suggest that “real Earth” is an external potential, if the concrete is firmly connected, probably not as this applies to many properties. Once that path is followed reinforcing is required in all floors connected, to the MET, and probably the walls and ceiling too need some form of bonding!

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    The question is can it introduce an external potential (that is not already present). As a concrete floor may be conductive the answer has to be no so bonding is not required, although it would probably do no harm. What appliance does it feed, because if a boiler or cooker with electric ignition it is probably bonded already, and the current cannot be very large so some 10mm is excessive? Is it reasonable to suggest that “real Earth” is an external potential, if the concrete is firmly connected, probably not as this applies to many properties. Once that path is followed reinforcing is required in all floors connected, to the MET, and probably the walls and ceiling too need some form of bonding!

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