[Gmecm] Welding vs. computers

[Rexdina at aol.com]

Doug, I think your thinking on the battery disconnected/not  disconnected  is 
well founded. However, and there's always a however in  electronics, some 
electric welders might be used in the negative polarity mode.  That might explain 
what you've been told. Wish I could remember all the  electronics I've 
forgotten. Then, maybe I could give you a more complete  answer.
Harry