I'm fitting an extenal socket and using SWA cable for the first time.
Hints and tips for making up the glands would be appreciated.
A link to a web site with beautiful idiot-proof pictures would be even
Make sure you get the correct size of gland. To cut the wire armouring
to length, you go around with an hacksaw or junior hacksaw for smaller
cables, just nicking the armour where you want the armour to finish. Do
this with the outer plastic still in place. It is vital to make sure
you really have nicked every single wire.
After removing the outer plastic sheath with a Stanley knife upto the
nicked wire point, you should be able to waggle the wire armour to get
it to fracture where you nicked it earlier. Fit the top nut part of the
gland on the cable and the plastic shroud.
You then just cut the outer sheath back a little more, followed by
twirling the inner around inside in a circle, in the same direction as
the armouring is wound, to get the armouring to spread out enough to
fit over the gland.
Finally nick the inner plastic sleave with the Stanley, waggle the
inner cable about and the point where it is nicked should break
allowing the sleeve to be pulled off.
Note the nicking rather than cutting all the way through. It prevents
damaging the cables or making weaknesses in the insulation. Practise a
couple of times so you get the idea.
The cable and armouring should then fit snuggly into the gland, with no
twisted armour wires and tighten evenly all round. Once tight, check
that each individual wire really is tightly held by the gland.
You can also cut the individual steel wires if you have an old pair of
large sidecutters. I wouldn't do it on a pristine new pair
There are also two basic gland types - internal only and
internal/external which has an extra sealing ring.
Also the two main sizes are 20mm and 25mm and you need to pick the
right one. If you look on www.tlc-direct.co.uk you can find a table
of cable sizes and glands.
Also, make sure that you have the appropriate nuts, bolts and serrated
washers to connect an earth lead if you need it. In any case, if you
are terminating in a metal box, a tag which is additionally bolted
through the small eye should be used.
To email, substitute .nospam with .gl
I'm using 3 core SWA so as to avoid relying on my gland assembling skills to
provide the earth.
The arrangement is as follows:
Dedicated MCB in CU ---> 2.5 T+E ----> Adaptible Box ---> 2.5 mm 3
core SWA ----> Exterior Wall ---> Exterior Socket
I have a pair of external glands.
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