[Shop-talk] MIG Welders 115 v vs 220v

[Randall]

> Question : Is there an advantage to a 220 v vs a 115 v model? 

Realistically, you can't get more than about 70 amps of honest welding
current from a normal  (15 amp) 120v outlet, without giving up something
else.  Running on 220v allows more output, as well as making the design a
little easier (cheaper) for a given output current.

For example, the Hobart Handler 140, "up to 140 amps", is only rated at 90
amps when operating from a 20 amp outlet; or 63 amps from a 15 amp outlet.
http://www.hobartwelders.com/products/wirefeed/handler140/

Randall