Electrical Repair Questions? Ask an Electrician for Answers ASAP
Welcome. My name is XXXXX XXXXX would be glad to assist.
Black is Hot power, white is neutral and ground is the bare copper wire.
If the switch box only has 3 wires as you specified and the switch has 2 brass screws and a green screw, the location of the white and black do not matter in this instance.
A single pole switch merely connects the 2 wires connected together and turns on the light
If the switch has 2 brass and a black screw along with the green screw, then it will have 3 wires to connect plus ground. In that situation, the black screw is common on a 3 way switch setup.
On a switch box with only the 3 wires in the box, the white was used to get power down from the light, the black is usually the return to the light
That is a typical single pole light setup using only 2 wires/plus ground down to the switch
thank you so much, i`m very happy and wish to pay $20 if i can. and i wish you could help in future if ever i need feedback. sam