Electrical Blue And Brown Wires Positive And Negative. 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. Positive of a negative earthed circuit. 3 wire grounded dc supply.
Negative ve grey. The colors white and gray indicate a neutral wire. Negative of a positive earthed circuit. Positive ve brown.
If you do have a fixture using international standards the good news is that the matching is very easy.
2 wire grounded dc supply. Once you attach the leads to the wires check the number on the screen of the multimeter. Positive of a positive earthed circuit. That means it connects to an electrical panel s neutral bus bar. If you do have a fixture using international standards the good news is that the matching is very easy.