Post by jcplumb on Mar 1, 2017 13:29:39 GMT
This post is part plumbing but mostly sparky.
I fitted a surestop in my mums last year after she had a leak and ended up falling when trying to turn the water off.
For some reason, last night the subject of cross bonding the plastic surestop popped into my head.
She's got a copper main coming out of the floor into the old brass stop cock, then a drain off, then the surestop piped in about 2 foot of plastic with 4 plastic elbows, then back to copper.
I can't remember seeing any earth bonding so just presumed there's an earth rod or similar, but it's a 100 year old house so isn't it typical for the incoming water main to be the earth for the property?
To be fair, I don't get the whole equipotential thing, when working for a paying customer I only earth bond if I see earths on the pipework and I need to bridge something I've done.
I thought about it and reckon that if the earth is a rod and I bond the copper pipework I could make it more dangerous if there was ever an incident where someone touches pipework while touching a live because the bonding would cause the current to go through them to earth.
The house was rewired about 10 years ago to whatever the regs were at the time, I know she has RCDs.
So the question is, should I go round and bridge the surestop with some 10mm bonding?
I fitted a surestop in my mums last year after she had a leak and ended up falling when trying to turn the water off.
For some reason, last night the subject of cross bonding the plastic surestop popped into my head.
She's got a copper main coming out of the floor into the old brass stop cock, then a drain off, then the surestop piped in about 2 foot of plastic with 4 plastic elbows, then back to copper.
I can't remember seeing any earth bonding so just presumed there's an earth rod or similar, but it's a 100 year old house so isn't it typical for the incoming water main to be the earth for the property?
To be fair, I don't get the whole equipotential thing, when working for a paying customer I only earth bond if I see earths on the pipework and I need to bridge something I've done.
I thought about it and reckon that if the earth is a rod and I bond the copper pipework I could make it more dangerous if there was ever an incident where someone touches pipework while touching a live because the bonding would cause the current to go through them to earth.
The house was rewired about 10 years ago to whatever the regs were at the time, I know she has RCDs.
So the question is, should I go round and bridge the surestop with some 10mm bonding?
