cables side by side

[baggielad]

To save on having to do two chases is it acceptable to run a single 1.5mm2 for a light next to a 2.5mm2 ring main cable? I understand the basic principles of derating but the cables will only be next to each other on a straight run of around 2.2m.

I've had a look via the search facility but can only find references to mains cables and non mains cables.

Thanks for any replies.

 

[ban-all-sheds]

Hmm.

New switch drops, new sockets, new cooker circuit, new radiators, plastering...

Sounds like a major refurb to me - you really ought to get a copy of the wiring regs, a decent guide to them, the On-Site Guide and the Electrician's Guide to the Building Regulations...

http://www.tlc-direct.co.uk/Book/4.3.5.htm

 

[baggielad]

Hmm.

New switch drops, new sockets, new cooker circuit, new radiators, plastering...

Sounds like a major refurb to me - you really ought to get a copy of the wiring regs, a decent guide to them, the On-Site Guide and the Electrician's Guide to the Building Regulations...

http://www.tlc-direct.co.uk/Book/4.3.5.htm[/QUOTE]

Thanks for that. If I'm reading it correctly as the lighting circuit will only be used for a 20w cfl uplight then it wont be a problem as it will be less then 30% of its rating.

 

[Paul_C]

If I'm reading it correctly as the lighting circuit will only be used for a 20w cfl uplight then it wont be a problem as it will be less then 30% of its rating.

No problem at all in that case, and no need to derate the other cable for grouping.

 

[holmslaw]

..

 

[Chri5]

I agree with paul_c.
Nice to see your doing a quality job with 1.5 lighting cable rather than 1.0.

Does anyone use 1.0mm

 

[ebee]

You could say 1.0 is safer than 1.5 T & E in one respect!

 

[Adam_151]

You could say 1.0 is safer than 1.5 T & E in one respect!

Touch voltage

 

[ebee]

exactly