If you are talking about an extension cord, I would vote against that.
I believe it may be a code violation as well and if so could compromise
your home fire insurance.

--
Joseph Meehan

Code violation? I don't think so but again I have not keep up with the code
for years. 60A, 480V extension cords for welding are common for
industrial/shop applications. How about a 10,000A 3-phase drag line at
13.8kV - portable big ass cable for some earth moving equipment or some
such.