I hope I'm posing the ? correctly, but by using a meter how do you identify say the neutral on a contactor if no schematics are available? Thanks, still learning, and just looking to learn a little more. Typically, I think it would be L1 on the contactor, but how can I verify?
If your talking about a combination motor starter, there is no neutral to speak of. But if you are sure a neutral has been wired thru the contactor, check the conductor to ground. But that neutral had better be identified.
L1/L2/L3 are the line side for the ungrounded phase conductors. They will be on top,.
My co-worker who is retiring next month almost did not make it.
He was sent to see why a GFCI receptacle bank on a loading dock wasn't working.
This is were he almost lost it.
The receptacles were piped out of a 3 phase 208, 60 amp disconnect that feeds a compactor.
They grabbed 1 phase from the "load" side and had dragged a neutral thru the disconnect from a panel.
He opened the disconnect and seeing that the 2 of the 3 phases had 30 amp fuses and 1 phase had a 60 amp fuse "feeding" the receptacles.
It was #10 wire thru-out.
He reached in and grabbed the 60 amp fuse. This is when he was hit and knocked to the ground. He is a big guy, 300+ pounds.
The disconnect was a bottom feeder and was energized the whole time.
The sad part is our Electrical shop boss had Ok'ed this install and oversized fuse.
My co-worker who is retiring next month almost did not make it.
He was sent to see why a GFCI receptacle bank on a loading dock wasn't working.
This is were he almost lost it.
The receptacles were piped out of a 3 phase 208, 60 amp disconnect that feeds a compactor.
They grabbed 1 phase from the "load" side and had dragged a neutral thru the disconnect from a panel.
He opened the disconnect and seeing that the 2 of the 3 phases had 30 amp fuses and 1 phase had a 60 amp fuse "feeding" the receptacles.
It was #10 wire thru-out.
He reached in and grabbed the 60 amp fuse. This is when he was hit and knocked to the ground. He is a big guy, 300+ pounds.
The disconnect was a bottom feeder and was energized the whole time.
The sad part is our Electrical shop boss had Ok'ed this install and oversized fuse.
Same here. But most dp contactor coils are marked a1 and a2 I think....maybe. I don't know. I can hook up control panels on auto pilot and half blind nowadays
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