<Dt> Earth leakage circuit breaker (ELCB) </Dt> <Dd> An obsolete circuit breaker type triggered by electrical power in a fault wire connected only to specifically protected parts in the circuit and appliances (i.e., other paths to earth exist). </Dd> <Dl> <Dt> Line (L; formerly, live, or phase) </Dt> <Dd> Power - carrying core / wire in a typical low - voltage or domestic installation; colour - coded brown (pre-2004: red). </Dd> <Dt> Neutral (N) </Dt> <Dd> Power - carrying core / wire in a typical low - voltage or domestic installation, usually bonded to earth (ground) voltage by the supplier; colour - coded blue (pre-2004: black). </Dd> <Dt> Earth (E), formally, circuit protective conductor (CPC) </Dt> <Dd> Core / wire that provides a connection to earth, for safety and protection purposes, for both end - user devices and metal objects and components in the installation; colour - coded green / yellow striped (but may be bare within sheathed cable). </Dd> <Dt> Steel - wire armoured (SWA) </Dt> <Dd> Steel wire protected cable, mandatory for outdoor or buried use unless equivalent protection provided via trunking . </Dd> <Dt> Trunking </Dt> <Dd> Protective conduit, typically made of plastic or metal, used to protect and hold cables, and allow access and maintenance, as they pass through the installation premises . </Dd> <Dt> Meter tails (or, tails) </Dt> <Dd> Separated core cables used to connect the incoming power supply to a premises with the distribution board . Typically in a domestic environment, connects the electricity meter (which is owned by the power company and treated as the incoming source) to the consumer unit . </Dd> <Dt> Twin (2 -; and 3 - or 4 -) core and earth </Dt> <Dd> Flat cable, usually insulated by a PVC sheath, used for fixed wiring . The name comes from the fact that it contains line and neutral conductor cores with individual insulations (twinned), and an uninsulated earth core . 3 - and 4 - core are identical but contain further conducting cores, each individually insulated . </Dd> <Dt> Powerline </Dt> <Dd> Multi-thread conductors that run between electric pylons, used for high voltage long distance power transmission . </Dd> </Dl> <Dt> Line (L; formerly, live, or phase) </Dt>

Which is the live wire brown or blue
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