John from Neptune, NJ has been a Green Sun Energy Services client since December of 2020. The generator was commissioned in August of 2021: 14 kW on natural gas, on a 200-amp service-entrance switch with two smart management modules and surge protection. The load calculation asked for 13 kW across the 1,919 square foot house, and two sump pumps are most of the reason for that figure – a pair usually means a basement that has already proved it needs them, and both can want to run at once in exactly the rainfall that takes the power down. Two refrigerators, a separate freezer, an electric oven, a washer, a gas dryer and a dishwasher fill out the load. The five-year maintenance plan ran its full term and has since expired.
Project Facts
- Location
- Neptune, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- December 2020
- Manufacturer
- Generac Model # 7223
- Rated output
- 14 kW LP / 14 kW NG
- Fuel
- Natural Gas
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Neptune homeowners
Will a 22 kW generator run an entire Neptune house?
For many homes, yes, but that does not mean every load can run at the same moment. Houses with two central air conditioners, electric heat, EV charging, pool equipment or electric cooking may need load management or a larger machine. The answer comes from a load calculation rather than from the phrase whole house.
How is the gas pipe size worked out?
From the generator's demand, the available pressure, the pipe length, the allowable pressure drop, the fittings, the pipe material and every other appliance connected to the system. The adopted fuel-gas code carries the sizing requirements and tables, and the model's published fuel consumption goes into the calculation.
Does a 200-amp service need a 200-amp transfer switch?
A transfer switch installed in the service path has to be rated appropriately for the service and the configuration. A 200-amp service commonly uses a 200-amp service-rated switch, but the actual design is confirmed by the electrician rather than assumed from the service size.