welder plug in the wall for a camper trailer
The welder receptacle must also be 4 prong 120/240 volt as opposed to 3 prong 240 volt only.
Otherwise you can't use it.
You could upgrade a 3 prong 120/240 without ground to a 4 prong 120/240 with ground by running a separate ground wire all the way to the panel where its breaker is, exactly, approximately, or vaguely following the route of the existing groundless feed cable.
You may not use the ground wire as a neutral in a cable even if you ran a separate ground wire back to the panel.
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.
Last edited by AllanJ; 07-10-2012 at 08:15 AM.