On Thu, 20 Mar 2008 11:11:07 +0000, Andy Wade
wrote:

Not the 6 mm^2 T&E directly (into SF1) since you're still fused at 60 or
100 A at that point

That's the second time I've made that mistake. I won't make it again.

(I presume that 6181Y means a tail).

Yes "meter tail type cable" readily available in cut lengths in 16 and
25 mm^2 for tails etc.

Thanks. Where can I learn what all the codes, e.g. 6181Y mean?

IIRC 16mm^2 is good for 80A and 25mm^2 is good for 100A. The fuse at
the meter is 100A so I hope the tails to SF1 are 25mm^2. The switch
fuse is rated 80A and the CU is rated 63A so I think the cable from
SF1 to the CU is only 16mm^2.

Since SF1 is rated at 80A would I be right to use 16mm^2 to SF2?


http://www.tlc-direct.co.uk/Products/WY106.html
(but fit a 30 A cartridge fuse, not an MCB, as that will give you better
downstream fault discrimination).

I've had a look at TLC and the Wylex range seem to be the only ones
that can be used with either fuses or MCBS. The other products do not
mention fuses. The price seems reasonable enough too. There is also a
plastic version a little bit cheaper. Is there an advantage to using
the metal or the plastic version? I guess metal is stronger so takes a
few knocks but on the other hand, doesn't it pose a problem in that it
must be earthed?

Thanks.