I see a coleman 'quad box' portable GFI with open neutral protection (this is a listed / osha compliant product -not something someone made). When looking at the product, it appears to have a standard GFI receptacle and a duplex receptacle in it. Their literature advertises a '25 amp relay' is in it to provide open neutral protection. I am thinking it has a double pole single throw NO relay inside that has its coil powered from the incoming line before the GFI. The hot and neutral both pass through the relays contacts before the GFI. This way if incoming neutral is lost the GFI never even sees any power?
Am I correct in how this would be set up? Is there more to it besides the relay?
Am I correct in how this would be set up? Is there more to it besides the relay?