Quote Originally Posted by cab13367 View Post
Welding cable is the cable used to connect the welding rod holder to the welder. It has to be flexible so that it can be coiled up for storage. They accomplish this by using much finer copper strands (but the same overall thickness) as battery cable as well as a more flexible insulation material. I went to a small local shop that replaces batteries and works on alternators looking to buy battery cable and he suggested the welding cable. He says they use it all the time for battery cable. Cost was $6/ft for 2/0 which is a little cheaper than NAPA sells 2/0 battery cable for.
Thanks Cab!