Old 4 Core Cable Colours

2 core and earth cable.

Old 4 core cable colours.

Standard multi core lines are available with 2 cores 3 cores 4 cores or 5 cores however some manufacturers offer rubber flexible cable variants with up to 19 conductive cores. Other core colours are allowed except green and yellow. Before this change old wiring colours in the uk for 2 core wire were red live black neutral and earths are either bare or yellow and green whereas with 3 core cable live red blue neutral additional yellow and earth either bare or yellow and green. Two core and earth cable new colours two core and earth cable old colours.

The flex cable flexible cord cable has three cores being live earth and neutral. Multi core h07rn f wiring colours. Cores should be marked as follows. Pre march 2004 the uk standard for 2 core and earth cable used in single phase i e.

Normal household installation was. The uk s new cable colours for plugs are now harmonise with europe s power cable colours for ac dc. Where an addition or alteration is made to a two or three phase installation wired in the old core colours with cable to the new core colours unambiguous identification is required at the interface. The new coloured cables are referred to as harmonised cables the colours are harmonised across the eu.

N line conductors old and new conductors. Australia also have a different wiring colour standard. Neutral conductors old and new conductors. Red red white.

Marking inscription for identification of cores of electric cables number printing. Red red white white. Sab colour code for rtd connection cables.