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Ben Blaukopf

wrote:
On Fri, 04 May 2007 00:12:35 +0100, Ben Blaukopf
wrote:

I looked at the TLC one. The installation manual requires that you
measure the insulation resistance at 500V. I've never seen any others
that ask you to use anything more than 10 quid multimeter. I'd use a
megger anyway, but I've got one; most (95%) DIYers won't. I suspect
that's most of what they mean by 'not for DIY'.

The most noticable thing about the product is that the cable is 4mm.
Everyone else seems to be offering 3mm - 3.5mm.

Hello,

No I don't have a megger. Can I use a multimeter?

You can do what you like, but don't expect TLC to honour the guarantee.

More to the point, this falls under part P. How are you going to test it
for the BCO? You can't fill in a Minor Works certificate without
measuring R @ 500V, regardless of what the installation manual says.
Most DIY-kits would expect your electrician to measure this for you when
making the final connections. This kit wants R @ 500V recorded at 3
times during the process.

Do I measure the resistance of (1) the heating cable and check that
does not vary before and after and also (2) the resistance between the
cable and earth to check there is no short circuit?

Have you actually read the installation manual?

Ben