don9355
Member
- Location
- Fort Wayne, Indiana, USA
I have a customer that has an older Honda 2000 watt 120 volt generator. They want to be able to connect it to a new Square D 200 amp main breaker service panel. I would use a Square D generator interlock kit with a 20 amp 2 pole breaker. The generator has overcurrent protection built in. The problem is the generator only has 120 volt output using a 15 amp duplex receptacle. I considered using a 20 amp 120 volt flanged inlet, however in order to backfeed the panel and have 120 volt to both phases I would have to connect the two phases together either at the flanged inlet, or at the backfed circuit breaker. With the interlock kit installed there will be no chance of causing a bolted fault unless someone removes the panel cover and then turns on the backfed circuit breaker. The other option would be to use a 20 amp 250/125 volt flanged inlet and connecting the two phases in the cord plug or connector. Are there any code violations here that I am not aware of. I realize that it would be easier to just tell the customer to buy a different generator with a 250/125 volt output. They are aware that they will have to turn off all the 2 pole circuit breakers before they use the generator, and that they will be very limited to what they can run at any one time.