Zoltan from East Windsor, NJ has been a Green Sun Energy Services client since March of 2021. The generator was commissioned that November: a Generac Guardian rated 19.5 kW on natural gas, on a 200-amp service-entrance switch with two smart management modules. The load calculation asked for 14 kW across the 2,200 square foot house, so the machine sits well above the requirement. Eight months passed between the contract and the commissioning, which is not unusual on a generator – the permit, the utility gas work and the equipment lead time all run in sequence rather than together, and none of them moves faster for being chased. The generator is supported by annual maintenance, an extended parts-and-labor warranty, and monitoring we manage.
Project Facts
- Location
- East Windsor, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- March 2021
- Manufacturer
- Generac Model # 7043-2
- Rated output
- 22 kW LP / 19.5 kW NG
- Fuel
- Natural Gas
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from East Windsor homeowners
Will a 22 kW generator run an entire East Windsor 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.