the 60A circuit is more than enough for all the the hugest of welders. We
ran a detached garage with a 250A welder on a 10ga 30A underground circuit
for 30 years. How big a welder do you have?

--
Steve Barker



"Ignoramus18798" wrote in message
...
I presently have a 220V subpanel in my garage, the circuit is wired
with 6 gauge wire on a 60A circuit breaker.

This circuit is inside a 3/4" conduit. It is comprised of three 6
gauge wires (two hots and neutral, with conduit being the ground).

I now realize that choosing that low capacity was a mistake. (with a
big welder now in the picture) I would like to know just what would be
involved if I wanted to upgrade to 100A.

Can I be able to squeeze, say, two 4 gauge conductors (hots), plus one
8 gauge conductor (neutral), into a 3/4" conduit? Or will I have to
replace the conduit too?

I am very regretful of not doing the right thing and going for max
capacity. When I did it, the only 220V tool I had was a 3 HP
vertical compressor.

i