Gas pipes and cables

[APSH]

Hi guys.
Just a quick question. Doing a ccu change for my assesment and a swa is close to the gas meter and pipes. It is 50mm from pipes so that is ok but only around 10-15mm from the meter as it is run behind it up agaianst the wall, and following the on-site guide you need a seperation distance of 150mm from the meter to electrical equipment. But it does state the distance can be reduced if a non-combustible barrier of insulating material is interposed and so was just wondering if using trunking around the swa would meet needs of regs in relation to using a non-combustible barrier of insulating material? as it comes up in a corner and is quite difficult to move as the meter is in the same corner. can't do much with the cable as it is swa and comes up in a small gap in the floor behind the gas meter and also under the floor it is run between wall and joist with a dwarf wall underneath and I just can't bend my arms the way i need to to be able to move it away. Thanks for your answers, sorry it is a basic question but don't want to get the assesment wrong

APSH

 

[HandySparks]

A short length of PVC trunking sounds like just the thing.

 

[jase]

is PVC non combustible?

 

[jase]

if you look closley at the diagram on pge 18 of the OSG the gap needed between a cable and gas pipes or metering equipment is 25mm and this can be reduced if the gas pipe is pvc wrapped or a barrier of electrically insulating material is interposed, the distance from electrical accesories must be 150mm.
I would say that as this is an armoured i would class it as double insulated so therefore negating the need for the gas pipe to be wrapped, In any case, as you have not put this cable in then you might get asked about it but it will not form part of the work that you will be assesed on

 

[MarkieSparkie]

is PVC non combustible?

According to Marshall-Tufflex, Conduit and trunking made from PVC-U is flame-retardant and self-extinguishing. It is NOT non-combustible given enough heat for long enough it will combust and decompose, but not quickly due to it's inherent flame-retardant and self-extinguishing properties.

http://www.marshall-tufflex.com/cable/tech/PVC-U Domestic and General Trunking.pdf
http://www.marshall-tufflex.com/cable/docs/CONDTRUNKDATA.PDF

 

[Geordie Spark]

would a barrier of plasterboard suffice?

 

[Farmelectrics]

Place it in some mini trunking

 

[Octopus]

Its been like that for xx years so whats the problem. The OSG is all about new installs.

Tin hat on!

 

[telectrix]

agree with murdoch, also, can we not consider the armour of the SWA as a non-combustible barrier. (2nd tin hat off the peg)

 

[APSH]

Hi guys,
Thanks for the advice. Think it will have to stay where it is as I just can't get access to it to move it and will argue my case to the assesor if it comes up. Once again thanks alot for the advice.