bondings

[paul b b]

hello chaps,

doing a cu change and the main water has about 10mm of copper before going to plastic. this in under the sink, should i bond to the main water on the combi boiler?

also is it ok to bont at a convinet point of the customer does not want carpets ripped up? ie... cu in the kitchen, gas and water both on oppisit sides of the house?

thanks

 

[M107]

hello chaps,doing a cu change and the main water has about 10mm of copper before going to plastic. this in under the sink, should i bond to the main water on the combi boiler?

also is it ok to bont at a convinet point of the customer does not want carpets ripped up? ie... cu in the kitchen, gas and water both on oppisit sides of the house?

thanks

I'd bond on the copper under sink.

Yes you can bond at an alternative location, I've not got the regs to hand bu the wording is along the lines of.....bonding connection to gas / water and other services to be made as near as practicable to the point of entry of that service into the premises

 

[Andy™]

hello chaps,doing a cu change and the main water has about 10mm of copper before going to plastic. this in under the sink, should i bond to the main water on the combi boiler?

also is it ok to bont at a convinet point of the customer does not want carpets ripped up? ie... cu in the kitchen, gas and water both on oppisit sides of the house?

thanks

you need to bond anything extraneous - the bit of pipe next to the boiler probably isnt extraneous, and is probably earthed via gas anyway. now if the incoming is lead, then that will be extraneous and would need bonded. if it was copper between both points, then it wouldnt be so bad

 

[paul b b]

Thanks chaps. I thought as much, its a right pig as well. How do I use my megger to prove I need to bond?

 

[Andy™]

check resistance between MET & pipework - if its less than 22K, its extraneous and needs bonded. if over 22K, doesnt need bonded

 

[nutsy]

I'd bond on the copper under sink.Yes you can bond at an alternative location, I've not got the regs to hand bu the wording is along the lines of.....bonding connection to gas / water and other services to be made as near as practicable to the point of entry of that service into the premises

supposed to be as close to point of entry as poss and before any branching off of pipework.

 

[steptoe]

BUT after the stopcock,

so AFAIAC that doesnt include the bit of lead beforehand,

unless we are going to go down the road of starting to cross bond pumps etc then you can discount compression fittings as not continuous.

this is a very grey area in the 17th and one I hope will be clarified with the 18th(you cant seriously have the amount of ammendments needed and still call it the 17th.! surely?)

I think this may be one of the judgements that are really only able to be made on site.

 

[paul b b]

thanks chaps,

i have been back to have a look at one of the jobs tonight and both gas and water run next to the cu, i did a continuity test from met to both pipes and have continuity, so guess they must be bonded some where, though the customer has no idea where and i cannot see any in the obvious places. she does not want carpets etc ripped up, can i bond next to the cu if needed? or is this a nono?

thanks once again

 

[steptoe]

I would,

and state so on the cert,

cover your tender bits.

 

[Andy™]

if there is no bonding but continuity, most obvious would be cpc to boiler, shower, gas cooker or any other heating appliance

 

[wozz]

was it a late night visit to the customer paul??

 

[paul b b]

was it a late night visit to the customer paul??

bored housewife and all that lol