This is a listing violation (110-3(b)). 310-13 might also apply since welding cable does not appear in any of the tables mentiond.

From UL's white book "Welding Cable (ZMAY),
"Welding cable...intended for use in accordance with National Electrical Code Article 630, Part E in the secondary circuits of electric welders." Since this laboratory application doesn't involve welders, this cable would not be allowed.

The finer stranding of welding cables may have something to do with lowering their impedance to high frequency currents, but I've never heard of a welding cable actually being applied in this manner.

Tom

[This message has been edited by Tom (edited 11-20-2001).]

Few things are harder to put up with than the annoyance of a good example.