Supplying distribution board regs

[thekingiam]

although it's a domestic setting it's a setting for as many teenagers they can fit in as little spaces as possible, so more of a commercial rewire should of been budgeted for.i would of guessed that the local labc would look at everything in close scruitiny as well as other bodies such as the fire department.not using swa for a start, although not always needed may have already started alarm bells ringing as they may be worried that you have cut corners in other places.i will leave the rest if any technical details to someone like telctrix if he is here or lenny or eng54 or the many others that must be drinking in the pub

 

[Des 56]

If your tails are run all the way in trunking and are sized correctly and fused correctly, then can't see an issue. Are the DB 3 phase?

Thats about all that needs to be said

There is no reason to say you have to use swa unless mechanical protection was required,then swa would satisfy that,but that protection could also be given to tails
Cables in trunking is an accepted method of installation,with the tails they should be supported,clipping them in the trunking should do

You would do well to fit switch fuses for each set of tails after the 3 phase isolator,the supplier may insist on you providing your own overcurrent for the extended tails

Rather than you trying to find a reason
Ask them to specify the reg No that stipulates that swa should be used as an exclusive method of install,put the ball on their foot rather than yours

 

[Deleted member 26818]

No real need for SWA, the trunking provides mechanical protection.
It's not normal to provide mechanical protection for cables when they're run under floors or above ceilings. Is there evidence of excessive rodent activity?
The only problem that I can forsee, is as others have indicated, the length of the tails.
The DNO might not like it, although the cable and the reference method allows up to 101A. What are the ratings of the fuses?