jjhoward
Senior Member
- Location
- Northern NJ
- Occupation
- Owner TJ Electric
Happy New Year!
I have a customer with a small 3000 watt inverter generator (intended for camping). At the customer's home, we installed a listed mehanical interlock for his GE 200 amp main breaker panel, a 240V-30 amp generator breaker and a 240V-30 generator inlet port.
I have a standard 4 wire generator cable (L14-30P on one end, a L1430-R on the other end).
I have also procured an adapter cable that mates with the L14-30P end of the generator cable and the other end is a TT-30P that will mate with the customer's generator.
So, the 2 hots in the 4-wire generator cable (X & Y) will be tied together once this adapter cable is attached. There will be 120V from each "hot" in the 4-wire generator cable to neutral once the cables are attached to the 120V generator. The ground in the TT-30P is connected to the ground lug in the gen cable.
Can this 120V connection to the 4-wire gen cable be damaging or dangerous to any loads in the residential panel??
I pondered this for some time...I don't see a problem, but I would like to hear from the great minds here before I do something DUMB!!
Thank you.
I have a customer with a small 3000 watt inverter generator (intended for camping). At the customer's home, we installed a listed mehanical interlock for his GE 200 amp main breaker panel, a 240V-30 amp generator breaker and a 240V-30 generator inlet port.
I have a standard 4 wire generator cable (L14-30P on one end, a L1430-R on the other end).
I have also procured an adapter cable that mates with the L14-30P end of the generator cable and the other end is a TT-30P that will mate with the customer's generator.
So, the 2 hots in the 4-wire generator cable (X & Y) will be tied together once this adapter cable is attached. There will be 120V from each "hot" in the 4-wire generator cable to neutral once the cables are attached to the 120V generator. The ground in the TT-30P is connected to the ground lug in the gen cable.
Can this 120V connection to the 4-wire gen cable be damaging or dangerous to any loads in the residential panel??
I pondered this for some time...I don't see a problem, but I would like to hear from the great minds here before I do something DUMB!!
Thank you.