Ya know, it's funny - ( he said, changing subjects abruptly).

I have a Hobart 135 wire welder set up for 120VAC.
At 120 VAC the placard calls for 20 amps.

It had a dedicated 30 amp breaker for it in my shop.
Sweet machine.

But here in the garage of this house there is only one plug.
And it's on a 15 amp breaker.

Trying to tack some 1/4" steel brackets together was about the most
frustrating welding experience of all times.

Just about the time the puddle going nice - the breaker tripped.
The tacks were very "tacky" - down right sloppy looking in fact.

I real quick gave up and went down to the Tractor Supply and got a
heavy duty (30 amp) twenty foot extension cord and plugged into the
dryer circuit.

The Hobart was back to it's sweet personality again.

At least the welder rating is right...

But my 6 HP shop vac can't blow that breaker even if it wanted to.