On Mon, 10 Aug 2009 16:32:02 +0000, Carl D wrote:

I bought some SWA cable to use in the garden. It has three 2.5 mm2
cores, with brown, black and grey insulation.

The label doesn't say which colour to use for what but it does have an
new/old conversion chart.

new old
brown red
grey yellow
black blue

I think brown is live, but I'm not sure what to do with the others,
because I've only used twin and earth until now.

Which one is what?


It's 3-phase cable without a neutral.

brown = red = L1
grey = yellow = L2
black = blue = L3

If you are using it for a single phase+neutral supply then, strictly
speaking, it is the wrong stuff. It would be a pity to waste it, so I
would suggest that you use it as follows:

brown = live
black with blue sleeving = neutral
grey with green/yellow sleeving = earth

Note: you must sleeve the conductors at both ends.

You must also earth the armour (via a proper cable gland for wire armour,
but at 2.5mm2 I suspect that you have braided cable so cable entry is via
a stuffing gland and take the braiding to an earth terminal).

--
Mick (Working in a M$-free zone!)
Web: http://www.nascom.info
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