6mm T&E cable routing requirements

In general, no, it does not need to be in trunking.

Doing so will mean the cable will get a slightly lower rating compared to being in free air (clipped-direct method).

However, if you have a reason to suspect the cable will get clouted by hard things in normal use of the cupboard, then it should be protected (installation appropriate to the environment). It's not a hard and fast rule, you will need to assess it.

Cables are normally surface mounted and clipped in airing cupboards, if you want a "how's it normally done" baseline :)

Clipped direct to a surface is fine unless in an area where its likely to be subject to mechanical damage.

John Rumm wrote in news: snipped-for-privacy@brightview.co.uk:

Many thanks, Tim and John! That's what I expected, but thought I'd better check!

Jim

I agree with what Tim and John said.

But is the correct name for an unheated airing cupboard just "cupboard"?

Also, make sure you route it such that no clothes, towels, or other fabrics can be piled in contact with it. The cable needs to be ventilated.

May need to derate for higher ambient temperature (I assume 40C would be a safe ceiling for an airing cupboard).

"ARW" wrote in news:mnjs83$m4l$1@dont- email.me:

In my case it is a cupboard with a doorway but no actual door. So the slatted shelves are open to the air on landing, apart from a curtain which I draw accross if a guest is in the house!

Jim

snipped-for-privacy@cucumber.demon.co.uk (Andrew Gabriel) wrote in news:mnkd1i$kjj$2 @dont-email.me:

Good point - thanks.

Jim

Please may I ask, what power rating is the shower?

I was thinking of installing an electric shower as a back-up to the aging combi boiler. I thought that 10.5kW was the most powerful electric shower, so I went to TLC's calculator and typed in 11kW and

Sorry to hijack the post. It's too late for the OP as he has already installed 6mm^2 but for everyone else, should you use 6mm^2 or 10mm^2 cable for showers?

Thanks, Stephen.

Yes.

Oh, more detail?

;-)

It depends on the circumstances; primarily the rating of the shower, and the length and nature of the cable route.

This gives you the full explanation:

My local council powered its street lamps with 'clipped direct' to a barbed wire fence for a 'temporary' 5 months using what looked like 4mm T&E .......... thought it a bit mad, as in event of fault the very long fence would become live.

Only for 0.4 seconds.