someone just gave me an old welder a craftsman dual range 295 amp welder.... i only plan to use 3/32nd rods around 110 range...... I have a detached barn with a sub ran from house using a 40 amp breaker with 6 GA wire not sure why... All that the barn really uses is 4 lights, one sensor light on the outside, and a few receptacles fed by 2...20 amp breakers....... what size breaker would you recommend for this welder? what is safe. what is the max breaker size i can add ..... I do not know enough to and cannot google the answer...do i need to replace the 40 in the house?