Need Help! Unmarked wires- half my house is off!
I have an old house 1920's. At some point it was upgraded to a wire that looks like BX or MC. Problem is the wire are all black with some kind of fraying old fabric on them. I have pictures I happened to take beforehand and after the incident- b/c I was going to home dept and wanted to try and explain what I needed.
Here's the deal. I gave up installing a ceiling fan last year.
I am trying to install just a light now. Today I decided to work on it, and in all the wrestling/pulling/feeding with the darn things, pulled the "marking" tape right off the wires.
I have 2 cables coming in to the hole. One has 2 wires, one has 3. When I started today: 1 wire from the longer cable was attached to 1 wire from the shorter cable. The other wire from the long cable was attached to 2 remaining wires from the shorter cable.
I managed to put clamps on the cables, feed them thru the new round metal box I installed- and everything is good to go- except knowing what wires are which.
I am thinking it might be at the end of the circut? or the beginning?? When I left all wires disconnected, nothing else is coming back on on that circut.
When I test with my simple tester- I get one definate hot line on the long cable (that has 2 wires). It lights up bright on every line it touches- except one wire on the other short cable (that has 3 wires)- it glows only dimly.
I guess my problem is I don't know how to use my tester properly? It has a black and a red lead- and lights up- that's it.
Is there any way to do this besides acknowledge defeat and call the electrician?