SageBrush said:I'm still trying to follow what happened here.Flyct said:The most common wiring error for 14-50 receptacles was in commercial buildings. The neutral straight slot was wired to a 3rd phase of a hot leg.
I'm finding it hard to believe that an electrician would not know that they have 3 hot wires and a 3 phase distribution panel
I assume the industrial electricians weren’t familiar with 14-50R receptacles and were used to wiring 3 phase commercial appliances, thinking our device required 3 phase instead of split phase 240v. . When the tech was doing a pre installation site check and found receptacle miss-wired we would tape the proper receptacle wire diagram on the wall next to the outlet for the electrician to correct it. It was a simple correction, just mark the wire with white tape on both ends, move the wire at the breaker box end to the neutral buss bar and install a 2-pole breaker in place of a 3-pole breaker.
Some of our equipment required 480 v, 60 amp, 3 phase Hubbell receptacles. We would not supply that receptacle but give customer the part number required and have them order the expensive receptacle. We never found those miss wired.