Bsparky
New User
- Location
- California
- Occupation
- Health Care
Hello all,
We have a new 200 amp service, with a new meter box and service disconnect on the exterior of the house. Directly behind the meter box is a new larger 40 spot sub-panel.
We want to install a generator inlet because we live in an area that may lose power for many hours. We have gas appliances, including furnace, so a 30 amp inlet should be enough for a few hours running lights and refrigerators.
The main meter box and service disconnect cannot have an interlock attached the seimens manual. The sub-panel has a main breaker disconnect instead of a lug-load center, and that is where the interlock will be placed.
My question is regarding the ground and neutral coming from the generator inlet. The generator will have a floating neutral, BTW. Sub-panel the neural and ground are NOT bonded.
Can the neutral and ground from the inlet box be moved from the sub panel to the main disconnect bonded neutral/ground bar? The main feeder conductors are running through rigid conduit from the main disconnect panel to the sub panel but is only 1-1/2 inch and there are already. It would probably be over 40% to add 4 more THHN 8awg wires through that raceway. I know 10 awg can work for 30amp, but I had a bunch of 8 awg sitting around.
The picture included is what I imaging the wiring looking like, the dashed line being the neutral.
Many thanks.
Picture of the wiring
We have a new 200 amp service, with a new meter box and service disconnect on the exterior of the house. Directly behind the meter box is a new larger 40 spot sub-panel.
We want to install a generator inlet because we live in an area that may lose power for many hours. We have gas appliances, including furnace, so a 30 amp inlet should be enough for a few hours running lights and refrigerators.
The main meter box and service disconnect cannot have an interlock attached the seimens manual. The sub-panel has a main breaker disconnect instead of a lug-load center, and that is where the interlock will be placed.
My question is regarding the ground and neutral coming from the generator inlet. The generator will have a floating neutral, BTW. Sub-panel the neural and ground are NOT bonded.
Can the neutral and ground from the inlet box be moved from the sub panel to the main disconnect bonded neutral/ground bar? The main feeder conductors are running through rigid conduit from the main disconnect panel to the sub panel but is only 1-1/2 inch and there are already. It would probably be over 40% to add 4 more THHN 8awg wires through that raceway. I know 10 awg can work for 30amp, but I had a bunch of 8 awg sitting around.
The picture included is what I imaging the wiring looking like, the dashed line being the neutral.
Many thanks.
Picture of the wiring
