Gas and water earth bonding

[sidekick]

Just done some small work in a newly fitted kitchen,
There is no main earth bonding to gas and water. All plastered and decorated walls in an old stone building with no clear route from gas and water main inlets to consumer unit on other side of building. However, as part of the work, I disconnected a cooker circuit no longer required.

Is it possible to use the line and neutral of this 6mm t/e cable as an earth bond for the gas and water if correctly connected, marked and labelled at each end etc. ??

 

[plugsandsparks]

Problem is regs show independant 10mmsq cable for water and gas, so you wont do it with just the cooker cable. If both services are plastic incoming you may have another solution for say gas and then use that one for water but one way or another you need to get 10mmsq from each service to the MET. If anything is negotiable is the distance from the incoming service providing it does not branch out you could earth it further away.
Sorry cannot be more help

 

[Guitarist]

Can you use the cooker cable conduit to bring a 10mm earth down? If so, 1 x 10mm cable can connect both supplies if unbroken.

 

[sidekick]

Can you use the cooker cable conduit to bring a 10mm earth down? If so, 1 x 10mm cable can connect both supplies if unbroken.

Will need to look a bit deeper i think.
So far can only find cooker cable in loft above kitchen (only ground floor there) then disappears through 3 foot former external wall into plaster at ceiling level with occupied flat above. After two more rooms it appears at consumer unit.

 

[Dave 85]

This ones easy. Get 4 meter longer bits of 10mm earth. Clamp one each to the gas and water and poke the other end into a hole in the wall. Connect the other 2 into the met and poke the ends into the cieling. Voila, bobs yer uncle main bonding and no mess......
Thats what the gas fitters ask me to do anyway when they wanna sign off a boiler.
Take with salt.

 

[DurhamSparky]

guys your missing the point entirely!!

never mind the 10mm sizing and independent cables crap (please read up on TT systems and bonding both services with one cable)

Earth Cable has to be G/Y through out its length, so utilising red/black cable is instantly a no no!!

so the fact is this

A) you have carried out works in a special location be it notifiyable or non notifiyable work
B) you failed to notice the missing bonding at quotation level

C) what are you going to say on the MW cert where it says "has all checks been carried out" "bonding etc"

best get the thinking cap on buddie!

 

[jase]

Can you use the cooker cable conduit to bring a 10mm earth down? If so, 1 x 10mm cable can connect both supplies if unbroken.

what conduit?

 

[Plonker 3]

Earth Cable has to be G/Y through out its length, so utilising red/black cable is instantly a no no!!

So using a conductor in SWA as a earth isn't allowed then?

 

[DurhamSparky]

your using the conducter as a CPC

we are talking about MAIN EARTH / EARTH BONDING here....

 

[plugsandsparks]

guys your missing the point entirely!!

never mind the 10mm sizing and independent cables crap (please read up on TT systems and bonding both services with one cable)

Earth Cable has to be G/Y through out its length, so utilising red/black cable is instantly a no no!!

so the fact is this

A) you have carried out works in a special location be it notifiyable or non notifiyable work
B) you failed to notice the missing bonding at quotation level

C) what are you going to say on the MW cert where it says "has all checks been carried out" "bonding etc"

best get the thinking cap on buddie!

Was pondering the cable indentifier, what page does it say needs to be throughout its length, cos was struggling to find it.
Oh and whats special about a kitchen ?

 

[tony mc]

So if you come across this on a periodic what code would you give it and what reg ?

 

[Plonker 3]

your using the conducter as a CPC

we are talking about MAIN EARTH / EARTH BONDING here....

Fair enough, I don't have my BGB too hand so was wondering why.

 

[DurhamSparky]

i dont have bgb to hand either but flicking through the brb....

i know it exists as i had argument with dno over colours!

 

[DurhamSparky]

514.4.2 Protective conductor rules...

and by special location = part p notifiable area (not as special as a bath or shower)

i would give it a code 2 as some Muppet might think its a redundant cable and chop it out!!

 

[Plonker 3]

Just playing devils advocate again but what about when exporting a PME then surely it becomes a earth cable? :helmet:

 

[plugsandsparks]

514.4.2 Protective conductor rules...

and by special location = part p notifiable area (not as special as a bath or shower)

i would give it a code 2 as some Muppet might think its a redundant cable and chop it out!!

Yep, that rules it out for sure - thx
Thought you mean't notifiable but its one of my pet hates that kitchens get referred to as special

 

[DurhamSparky]

are we exporting the PME via SWA?? if so the SWA should be glanded tagged and utilised as the earth.

should achieve a greater Cross sectional area from the armour than the core.

 

[Plonker 3]

are we exporting the PME via SWA?? if so the SWA should be glanded tagged and utilised as the earth.

should achieve a greater Cross sectional area from the armour than the core.

That was why I was asking, seeing lots of threads on here asking about it and needing to bond a extraneous part.

 

[DurhamSparky]

end of day mate, this is an internet forum with many many many different heads and takes on the regulations...!

if you were to ever end up in court defending your actions its YOUR interpenetration of the book that's going to either sink or swim, not joe from screwfuxs forum....!

 

[Plonker 3]

I understand that, just think that as long as common sense prevails everyone will be OK, just that sometimes people need to know exactly what they are doing and not just following some guidance from here.