3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control. The house is old so wiring is from god knows when and i am afraid that the earth wire was left behind the other light switches in modern parts of the house dont have it.
Two Way Light Switching Light Fitting
Old light switch wiring to new uk. Heres how to do it without breaking the plaster and lath. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. Methodically dealing with one wire at a time will help avoid confusion and mistakes. When were electrical wiring colours changed in the uk. If your home has old wiring it is worth getting it checked by a qualified electrician to make sure it is in safe working order. Probe the existing hole with a keyhole saw to find the horizontal edges of the lath.
Light wiring diagram. The old electrical colours were phased out in 2006 but as you can imagine old wiring still exists in many houses and appliances. Its important that properties get their wiring checked to see if the wiring colours are out of date have deteriorated over time and to check if they comply with bs 7671 wiring. New vs old wiring colours. The current old light switches also have the earth wire connected but the new ones dont have earth in lighting circuit. Fix old house wiring problems.
In box 1 disconnect a wire on the old switch and attach it to the correct terminal on the new one. Bring old light fixtures wired with knob and tube wiring up to code by installing an electrical box in the plaster wall. 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. So the question is what do i do with the earth wire.