I ran a new 240 volt circuit to operate some motorized equipment. The equipment has a 3 prong grounded 240 volt plug. My source however doesn't have a grounding strip. Would it be better to not connect the ground wire to anything on both ends.
My source is a dry transformer with a neutral but the neutral is not grounded. The building is a mower/ maintenance shed for a golf course built in the early 60's. The source to the building from the utility is 277y/480 volts mostly to run the irrigation pump. I think the building was added as an afterthought, therefore the dry transformer was added to provide power for outlets in the building. Two 480 legs and 1 supposed neutral provide power to the high side of the dry transformer. When I arrived on the scene, I discovered that the neutral is not used and is just floating. The secondary coils were paralleled to provide 120 volts only to the entire building. I since then have successfully split the coils and now have 120/240 to the whole building. So in answer to the question on grounding, I don't know if the main breaker at the meter has a good ground for the entire building or not because it is locked up(key issue?). At any rate, like I said the neutral on the secondary side of the dry transformer is not grounded and all individual 120 circuits going out from this panel have a hot leg and neutral only -no ground wires.