I've just installed an electric shower. The 6mm T&E cable runs from the
loft down through an unheated airing cupboard. Does the cable have to be
inside trunking or conduit where it runs through the airing cupboard, or
can I simply staple it to the back of the cupboard's door frame, using
cable clips like this: http://tinyurl.com/nllh2b2

Many thanks for any clarification..

Jim