"Chris" wrote
| However, the consumer fuse is not like one I've come across before.
| A picture of the meter board can be found he
| http://www.chrisj.dsl.pipex.com/
| Can anyone give any clues to the configuration?
| All the consumer fuses I have seen have had a single seal.

That's perfectly normal. The left 3 sealed compartments are the phases, for
a 3-phase incomer. Only one (red) is used in this single phase installation,
the one on the right (black) is the neutral.

| Also what is the black wire coming out of the top of the earth terminal
| likely to be?

An earth to something...?

| I didn't post make a picture of the consumer unit available as I
| didn't want to scare anyone.

Oh, please do!

Owain