But the parts are isolated and the discussion is hypothetical because someone wants to do something to guard against a blue moon occurrence with disregard to the accepted methods of installation.
Earth bonding regulations
- Thread starter davebullocklive
- Start date
I think we've agreed about that, several times. It wasn't me who started this!
Kind Regards, John
I just worked along side a sparky doing up my gaff and we bonded the incoming cold water directly to the CU, and he also bonded each individual pipe coming out of the combi boiler (it's only copper for approx 2 metres) and then goes plastic throughout.
Bloke who fitted the meter said it was well and above safety regs and usually doesn't see anyone go to the trouble of doing it all (he was previously a sparky)
Bloke who fitted the meter said it was well and above safety regs and usually doesn't see anyone go to the trouble of doing it all (he was previously a sparky)
Correct.
Did he do the gas as well? He should have.
Totally pointless and demonstrates a lack of knowledge, thought or common sense.
The gas pipe can't go to plastic.
As there is no need that is hardly surprising.
I wasn't thinking about the gas pipe, yes he's bonded the gas pipe shortly before it enters the boiler.
It's also bonded from outside before it enters the property.
Yes he's old school and it doesn't require bonding of each individual pipe but seeing as he did it would be pointless to take away
As a matter of interest ... when you say that he 'bonded each individual pipe', did he just connect the pipes together, or did he also connect them to the electrical installation's earth?
Kind Regards, John
Right.
It's not a question of being 'old school', it's not required and it doesn't do anything - but neither does it do any harm.
In terms of electrical common sense, that's obviously fine, but do you interpret the regs as allowing main bonding to be applied 'before the conductor enters the building'?
Kind Regards, John
I didn't want to query that as, as you say, it doesn't really matter but there is a point of entry outside.
That's really what I was querying. As I'm sure BAS would tell us, "as close as possible to the point of entry" could be inside or outside the building, but I strongly suspect that most people think of it as meaning 'inside'.
Kind Regards, John
Well it's a little complicated because the basement is a self contained flat with it's own electric meter, and the gas boiler is bonded all the way back to the CU.
In addition the gas pipe is bonded inside the house shortly before the boiler (as I already said) back to the 2nd electric meter as the boiler runs off the 2nd electric meter.
The reason it was done like this is because the flat was bonded separately, and the maisonette came afterwards, in theory the sparky that did the basement shouldn't have earthed the gas pipe until later on when the maisonette wiring was being done - he did it then I suppose so that it could be signed off for the building compliance cert which he did.
Not sure if this quite makes sense ?
Exactly, and I don't have the heart to rip it out now he's done the work. The earth is clipped along the copper pipes before going up the wall to the CU, but still it's a little meh - each pipe with it's own clip etc
It is a bit confusing! Are there still two separate 'dwellings', each with their own electrical installation, or have they been combined into a single house/dwelling? If the latter, there should really only be one Main Earthing Terminal to which everything (everything which actually needs to be bonded
) should be bonded.Kind Regards, John
Are you saying the the earth cable is connected to each of the pipes coming from the boiler and then goes off to the CU?
Kind Regards, John
It is a bit confusing! Are there still two separate 'dwellings', each with their own electrical installation, or have they been combined into a single house/dwelling? If the latter, there should really only be one Main Earthing Terminal to which everything (everything which actually needs to be bonded
Kind Regards, John
Yes two separate dwelling each with their own electric installation.
Basement = flat
2 floors above = maisonette
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