No need to have anything running. Its an ohm setting and when you short the leads together the needle should drop to 0. Put one lead on the stud and one on the frame somewhere, needle goes to 0, put it from the stud and ground pin of an outlet. All of this machine at the same potential. The only reason the stud is there is to have a convenient place to hook a wire if the need should arise. Say this is sitting on a wood bed trailer and you lag screw it to the deck now the stud comes in to play, hook a wire to the steel of the trailer frame. Now the frame of the power plant machine and the metal you may come in contact with are at the same potential. No chance of personnel becoming a conductor between the 2. This is not a part of the workings of a normal electrical circuit, when its working right nothing is flowing on this wire, its a safety in case something goes wrong, mainly a fault of some cord and plug equipment connected to this machine. Best wording I can give at the moment, maybe a real sparkie can help.
No announcement yet.
grounding my engine driven welder