2 way switch colours?

[Vass]

2 way stairs lighting existing cable is red, white and blue (with a single separate black wire carrying the earth) New cable is Black Brown and Light Grey + earth included (to be sheathed) so, Red to brown, but white and blue? what goes where?

[Dave Plowman (News)]

Weird. Many use triple and earth for two way switching, but this is (was) red, blue and yellow with the ECC bare as ordinary TW&E, and this should be sleeved in green/yellow. Black is the old colour for neutral, not earth, so sort that out pronto.

There is no standard for which colours to use in a two-way switch circuit, so you need to look at how it's wired at the other switch.

[Vass]

no probs, understood thanks Dave

[EricP]

Didn't we have this before, where the yellow appeared to have gone white?

[Vass]

Stripped it right back, most certainly white did it used to me Red, Blue and Yellow then?

[ARWadsworth]

It probably is red, blue and white with no earth. I believe that particular cable stopped being used around 1966.

Adam

[Vass]

house built 1961 !

[<me9]

White and yellow were always alternatives for the 'yellow' phase on three phase supplies.