By the way one way this can happen is that the two wires are connected to different hot phases. One possiblility is that the electrician that wired the house used a switch leg to control the fan.
Shared Hot Wire Lutron
Both wires to switch are hot. I thought so too but if thats the case one of the wires should not have power until switched correct. The third switch is wired as a switch loop. Voltage is the pressure of electricity flowing through a. Ill be able to check with a multimeter in a few hours to verify. If the neutral is hot it could kill someone or start a fire. Now i have to find the hot wire and the cold wire and both tested hot with 118v.
After disconnecting both wires from the switch they both indicated hot from a non contact tester. Im in my parents house trying to add on a switch to previously stand alone ceiling light with a pull switch on it. In this case one of the black wires in the fan would always be hot unless the breaker is turned. Set your multimeter to measure voltage. My dad had decided to take out the light after the roofceiling had leaked and left both wires just hanging there. If i have two black electrical wires how can i tell which one is hot.
Don a pair of protective rubber gloves before testing to find out which black wire is hot. Why would my white and black wires both be hotthey are going into my lightswitch box in my garage which operates my outside lighttrying to hook up new light fixture but ran into that issue and conventional wiring of the new fixture and and light switch isnt workingi dont know if im running into a switch leg wiring issue which i have read about and dont understandi just want to get the. The voltage would be wrong but a lamp would still make light. In that case there would be voltage between them and lamps would work and it might have been like that for a long time.