
4 Wiring circuits simply explained
However, this should on no account be done. The supply ends of the various
lighting and power circuits should be brought back to a convenient point in
the building and there connected to a distribution fuseboard, each individual
circuit protected by a fuse or circuit-breaker.
An installation in a normal house or flat will usually require only one
distribution fuseboard or consumer unit (except when the electricity tariff
calls for two or more separate meters). The supply is controlled by a
consumer's main double-pole switch, which is usually included in the
consumer unit, so that the whole installation ca