Blue Electrical Wire Meaning. Electrical contractors and electricians work with electrical wire color codes on a daily basis. Yellow wires are used as switch legs to ceiling fans structural lights and outlets paired with light switches while blue wires are usually used as travelers for three or four way switches. Current australian colour code multiphase.
Below are highlights of the different wiring colours and what they mean. Any electrical wire that is red in colour means it is a live wire. But if you re not one of these professionals you might be wondering what the different colors of electrical wiring signify. The blue wire is known as the switched live and takes power to the light.
The blue is negative or return so that will go to white.
If you have a 2 gang or 3 gang switch you may have black and grey wires however these will have a brown sleeve on them as they are also switched. Phase 1 brown phase 2 black. The colors white and gray indicate a neutral wire. Current australian colour code multiphase. But if you re not one of these professionals you might be wondering what the different colors of electrical wiring signify.