What is the best (& most compact) method of joining 2 core 25mm SWA to
a pair of 25mm tails? The reason for wanting to do this is the limited
space for the large bending radius of SWA at the end of its run to a
consumer unit. A service connection block (aka Henley) doesn't appear
to have suitable entry holes for a SWA gland.

Or can the SWA be terminated in some sort of clamp & each conductor run
the last 6 to 12 ins into the CU, perhaps through conduit.

Or some other way, perhaps?


many TIA

wrote:
What is the best (& most compact) method of joining 2 core 25mm SWA to
a pair of 25mm tails? The reason for wanting to do this is the limited
space for the large bending radius of SWA at the end of its run to a
consumer unit. A service connection block (aka Henley) doesn't appear
to have suitable entry holes for a SWA gland.

I think the best way is to use one of the Lucy service connector boxes
as used by the electricity supply undertakings. I don't know where you'd
get them individually though, perhaps a wholesaler that deals in street
lighting fittings.

Failing that, position an adaptable box adjacent to the CU where
convenient and strip back the sheath and armour and terminate at the
adaptable box, but have the cores running through the box into the CU.

If using a metal box, the two holes for L and N must be linked by a slot
or in insulating or non-ferrous metal to prevvent eddy currents.

Owain

Dave Plowman (News) wrote:
In article . com,
wrote:
What is the best (& most compact) method of joining 2 core 25mm SWA
to
a pair of 25mm tails?

cut

Just cut the outer back to where you need to bend it. Sleeve the
conductors - use the outers from singles if you can't get sleeving.

Many thanks for this & Owain's reply. Very helpful, it's got me off
the hang up about needing to finish the run with tails. Looks like an
amalgam of the suggestions is the way forward.

But please can you clarify the above suggestion - if you cut back the
outer, then presumably you would terminate with a cable gland to get a
neat finish? Presumably it would be OK to clamp the SWA just behind
the gland onto a timber joist with a standard cable clamp? Am thinking
then that the 'loose' unsheathed cable could be run (round quite a
sharp curve)into the CU via a plastic switch box which butts up to the
CU, (with plenty of space inside for ventilation & to avoid a 90 deg
bend).