bonding question

[demkap]

with regards to bonding for a condition report i found gas bonding at 10mm and then the water was bonded but it was fed into a sockets earth in the cupboard... im not sure what code to give this as i was getting a good reading aswell?
also found a light in hallway with no cover on it- code 1?

 

[malcolmsanford]

When you say fed into a socket, do you mean that there is a 10mm (?) cable terminated into a socket outlet?

If that is the case ....................how ?

 

[edexlab]

Are you saying that at the gas meter its a 10mm and this is then connected to the water service ? or they are separate but the water is connected to the socket, and have you tested the bonding form the MET to ensure its done properly ?

It sounds as if the water is either bonded to the socket or they've connected the socket to improve the Zs presumably they've taken it to the backbox or trimmed a few strands to make it fit the earth terminal.

 

[Deleted member 9648]

with regards to bonding for a condition report i found gas bonding at 10mm and then the water was bonded but it was fed into a sockets earth in the cupboard... im not sure what code to give this as i was getting a good reading aswell?
also found a light in hallway with no cover on it- code 1?

If it's not correctly bonded back to the intake I would code it a 2....(assuming it requires bonding and depending on earthing type...TNCS more likely to get a 2)....some might argue for a 3.
Light with no cover?.....exposed accessible live parts is a code 1.......your call though,are the live parts accessible?

 

[demkap]

thanks for your responses, basically gas supply its bonded 10mm back to board. then the water supply is bonded between pipes but instead of going directly back to board because i spose its not that close, they have run the earth into a socket next to the supply? i got a reading from it but i think its a code 1?
also with light its out of reach?

 

[malcolmsanford]

I think there maybe a problem with this socket rather than the bonds.

As you say the gas in 10mm goes back to the CU which I assume is the MET. But you say that there is also a connection between the pipes................. so in effect you have a 10mm to gas and daisy chained to the water? So why is there a cable from the water to the socket??

You either have a socket that isn't earthed and someone nicked the bond to do it, or you have an idiot that was working there, both plausible. What happens if you disconnect this cable from the water to the socket?

a) is there continuity from the 2 pipes back to the MET
b) Does is affect your Zs for that socket as was mentioned in another post

 

[ezzzekiel]

pretty impressive getting the 10mm into the socket

possibly gas bond is continous to water then met

 

[GLENNSPARK]

If it's not correctly bonded back to the intake I would code it a 2....(assuming it requires bonding and depending on earthing type...TNCS more likely to get a 2)....some might argue for a 3.
Light with no cover?.....exposed accessible live parts is a code 1.......your call though,are the live parts accessible?

undersized/unsuitable bonding on a TN-C-S is a (2)....if its undersized and you lose the neutral.....you`v got all that current going down a small conductor...

 

[demkap]

its a TNS system... when i say connection to pipes.. i mean the cupboard where the water supply is, is further down the hallway. the gas is fine. the water supply bond seems to be connected in the socket in the cupboard. i got a good continuity reading though... and all zs throughout property were fine.. soo im not sure what way to go.. do i code it a 1 then redo the water bond back to the board?

is there continuity from the 2 pipes back to the MET

Read more: http://www.electriciansforums.net/e...rum/68022-bonding-question.html#ixzz2D98M5MnK

is there continuity from the 2 pipes back to the MET

Read more: http://www.electriciansforums.net/e...rum/68022-bonding-question.html#ixzz2D98M5MnK

is there continuity from the 2 pipes back to the MET

Read more: http://www.electriciansforums.net/e...rum/68022-bonding-question.html#ixzz2D98M5MnK
​

 

[ezzzekiel]

well its not right then is it, so whats the point?

 

[Deleted member 26818]

Can I ask, why you believe a code C1 is warrented?
Both wirepuller and GLENNSPARK have pointed out, thay it's a code C2, and I'd point it out as well.
It can be quite annoying, giving advice and then being ignored.

 

[Deleted member 9648]

^^^^Wot spin said^^^^......a code 1 is an immediately dangerous situation.Given that there are thousands of properties in the UK with no bonding at all...and have been that way for decades.....and the residents are not constantly dropping dead...... it's hardly an immediate and real danger is it?

 

[GLENNSPARK]

^^^^Wot spin said^^^^......a code 1 is an immediately dangerous situation.Given that there are thousands of properties in the UK with no bonding at all...and have been that way for decades.....and the residents are not constantly dropping dead...... it's hardly an immediate and real danger is it?

its possible under fault conditions....hence the (2)....but agreed with your comments here....

 

[rattlehead85]

Inadequate or lack of Main Protective bonding is a C2 departure.
It sounds unlikely but has anybody considered that the 10mm2 cable connected to the gas running back to the socket may be terminated on the lug to the backbox and the wiring method serving the socket is steel conduit? This is permitted as a bonding conductor as long as the conduit size is proved as adequate. As long as the connection of the bond at the socket box is mechanically sound this cannot be classed as a departure.