Anthony from Jackson, NJ has been a Green Sun Energy Services client since July of 2024. The generator was commissioned in October: a Generac Guardian rated 19.5 kW on natural gas, on a 200-amp service-entrance switch with two smart management modules and surge protection. The load calculation asked for 19 kW across the 2,900 square foot house, with a double electric oven doing much of the work in that figure. One condition was agreed before the contract: a tree had to come down and the stump be ground below grade with the lawn. Below grade is the part that matters – a stump cut level looks finished and still rots, and a generator pad wants ground that will still be level in ten years rather than ground that looks level today.
Project Facts
- Location
- Jackson, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- July 2024
- Manufacturer
- Generac Model # 7042-2
- Rated output
- 22 kW LP / 19.5 kW NG
- Fuel
- Natural Gas
- Home sized for
- 2,900 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Jackson homeowners
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.
Can the generator stay connected during a pressure test?
The machine has to be protected from test pressures beyond what its fuel controls are built to withstand. The fuel-gas code sets out when appliances are disconnected or isolated for testing, and the plumbing contractor follows both that code and the generator's installation instructions.
Will a 22 kW generator run an entire Jackson 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.