Electricity is supplied to your home via a service cable which
is terminated into a chamber that contains a fuse. This fuse protects
the complete installation and is the responsibility of the electricity
supplier (Electricity Company).
The meter is fed from this fuse, this can be integral as shown
below or with visible cables. In older properties these cables
are red and black, in newer properties these cables have an additional
grey sheath to protect them.
Everything after the meter is the responsibility of the consumer,
including the cables from the meter to the consumer unit.
The consumer unit is the main part of the consumers electrical
system, from here all the individual circuits are fed and protected
by a fuse or MCB (miniature circuit breaker). The consumer unit
also incorporates a main switch where the entire electrical supply
can be isolated
D W Hargreaves Electrical
Contractor