Wire markings - aluminum?
I have a house built in 1967 with some aluminum wiring. I'm trying to figure out if it is all aluminum branch wiring. Some of the wires are marked "Kaiser Aluminum KA Flex", that's the obvious one. There are two other types marked:
1. "Essex 14-2G Non Metallic Sheathed cable type NM-B 600v"
2. "Triangle Thermo-Triex Type NM with ground 12/2"
Are these copper wiring? I'm thinking a previous owner may have rewired some of the old aluminum circuits.
Thanks for the help.