"Jimmy" wrote in message
...
On Sat, 15 Jan 2005 21:23:50 GMT, "BigWallop"
wrote:

No. They will remove the main fuse and connect the new sub mains supply
cable to that directly, not through the meter. If you look at the top
of
the main fuse on the head end, you'll see that it has two indents for
cable
entry. One is already taken by the tail for the existing meter, but the
other is free to be knocked out and another new cable connected to it.

Once they are happy that the new installation is safe and fully
operational,
they will re-seal the main fuse. You can then control the new supply
with
the 100 Amp isolator switch you fitted for the new sub mains supply to
get
connected to.

Thank you for the help. Do you happen to know what sort of tests they
use to ascertain whether the wiring cirquit is 'safe'? If I knew that,
I could perhaps run the test mystelf before they come on site.

J


If you want buy the test gear they use, then go ahead, but it is not cheap
bits of equipment like a simple multi-meter. They test for correct
earth-loop impedance, voltage drop across the mains conductors under
differing conditions and other safety device tests. They are very commonly
strict on exposed conductors showing at the terminals of any connections, so
make sure you cut the insulation to just the right amount for the copper to
be gripped tightly under both the grub screws, leaving the insulation
sitting as close as possible to the terminal itself. Try not to expose the
bare copper at all.