I've purchased too long a length of underfloor heating cable and need
to cut a few metres off the end. Assuming its a twin core cable, is
it just a case of joining the two cores together at the point where
its cut ? Any suggestions what I should use to join them ? BTW the
cable is spaced as close together as it should be (100mm) and so
cutting the excess is the only option.
TIA

In article ,
aberdeen writes:
I've purchased too long a length of underfloor heating cable and need
to cut a few metres off the end. Assuming its a twin core cable, is
it just a case of joining the two cores together at the point where
its cut ? Any suggestions what I should use to join them ? BTW the
cable is spaced as close together as it should be (100mm) and so
cutting the excess is the only option.

Difficult to comment without knowing what you bought.

I suspect you can't cut it as you'll change its resistance and power
rating (and may have problems making connections to the cut ends, not
to mention that it might also be screened as a leakage protection).

You'll have to change the spacing to fit it all in.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

aberdeen wrote:
I've purchased too long a length of underfloor heating cable and need
to cut a few metres off the end.

Do not, under any circumstances, shorten a heating cable. This would
reduce the circuit resistance and thus increase the heat dissipated per
unit length. (Double whammy - more watts in fewer metres.) The cable
would be over-run and the power per unit floor area would be higher than
if you just fitted it all in by slightly reducing the spacing.

Assuming its a twin core cable, is it just a case of joining the two
cores together at the point where its cut ? Any suggestions what I
should use to join them ?

Manufacturers' repair kits are available for where accidental damage
occurs, but as I said, *DO NOT CUT*!

BTW the cable is spaced as close together as it should be (100mm) and
so cutting the excess is the only option.

This sounds like nonsense. If you only have a small amount of 'excess'
a small reduction in spacing will easily absorb it and the increase in
watts per sq. m. of floor area over your design value will probably be
negligible.

--
Andy

On Jun 8, 12:39*pm, aberdeen wrote:
I've purchased too long a length of underfloor heating cable and need
to cut a few metres off the end. *Assuming its a twin core cable, is
it just a case of joining the two cores together at the point where
its cut ? *Any suggestions what I should use to join them ? *BTW the
cable is spaced as close together as it should be (100mm) and so
cutting the excess is the only option.
TIA

forget cutting it. Space it closer, and if you're keen to reduce power
per area use a dropper or transformer
http://wiki.diyfaq.org.uk/index.php?title=Droppers


NT