Old And New Cable Colours

Just opposite to the existing colour scheme.

Old and new cable colours. New wiring and cable colours new electrical wire colours and uk wire colours. In the new cable colour code the colours of blue and black are used to identify neutral and phase conductors i e. Old and new conductors.

The old wiring colour codes did not account for proper phase rotation therefore most of europe now abides by iec international electrotechnical commission for single phase and three phase electricity. The changing of colour coding standards for electric cables is of the most significant changes for the electrical industry in modern history. The uk s new cable colours for plugs are now harmonise with europe s power cable colours for ac dc.

If there is any mixing of old and new style uk wiring colours then the cables should be clearly marked to prevent the incorrect application of the phase and neutral. New vs old wiring colours. Australia also have a different wiring colour standard.

N line conductors old and new conductors. Brown orange and yellow are used for 480 vac. There are varieties of cable within the uk with similar colouring to the mains wiring.

In 2006 amendment 2 of 17 th edition bs7671 wiring regulations saw a change to harmonise the uk colours with the european cable colours for consistency and to avoid confusion. We show you how the new wiring colours translate to the old electric wire colours and how you can ensure that the right wires are connected in any instance. Neutral conductors old and new conductors.

It s important that properties get their wiring checked to see if the wiring colours are out of date have deteriorated over time and to check if they comply with bs 7671 wiring. The old core colours with cable to the new core colours unambiguous identification is required at the interface. During the transition period either the old or new cable colour code but not both may be used.