I'm trying to wire a 3 prong plug. I'm using some very old wire that is connected to a very old welder. The wires are all white. I know which one is the ground. Can I switch the two hots. I don't know which hot it red and black from the welder.
Neither of those are correct for a welder.
The 10-50 receptacle on the left is the obsolete pre-1996 outlet for a stove.
The 14-50 receptacle on the right is the new outlet for a range.
For a welder, you need a 6-50.
What model welder? I don't think esbestos in the cable.
What do the fibers look like?
Brown thin strands. Almost like a fiber rope. I'm thinking this does not contain asbestos now. I'm just being cautious.