the new wiring colours came in in 1966.
when did the new wiring colours come in?
1966
the standard colours in fixed wiring were harmonised in 2004 with the regulations in other european countries and the international iec 60446 standard. for a transitional period (april 2004 – march 2006) either set of colours were allowed (but not both), provided that any changes in the colour scheme are clearly labelled. from april 2006, only the new colours should be used for any new wiring.





























section::::wiring colours.:conductor colours.:potential for confusion.
electrical wiring in the united kingdom
bullet::::- ring, or ring final circuit (rfc): a ring circuit is a uk standard means for wiring domestic and other light commercial premises, not often seen elsewhere in the world; in effect it is a radial circuit whose final termination is made back to the originating distribution board, rather than at the last outlet or device serviced.





























bullet::::- de-energized circuit: circuit that is isolated from power and not at a potential different from earth. note the difference to permit to work.





























bullet::::- spur: a branch supplying a side-socket or outlet, especially from a ring circuit.





























section::::wiring colours.





























section::::wiring colours.:conductor colours.
electrical wiring in the united kingdom