Janine from Howell, NJ has been a Green Sun Energy Services client since July of 2020. The generator was commissioned that September: a Generac Guardian rated 19.5 kW on natural gas, on a 200-amp managed whole-house switch with a smart management module, sized against a 19 kW calculation for the 5,300 square foot house. The load survey is one of the heaviest on the site – two double electric ovens, two dishwashers, two sump pumps, two refrigerators, a separate freezer, a washer and a gas dryer. Two double ovens and two dishwashers usually means a second kitchen or a house built for entertaining, and either way a property whose demand does not follow from its floor area alone. Annual maintenance, a seven-year extended parts-and-labor warranty and monitoring we manage all sit behind it.
Project Facts
- Location
- Howell, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- July 2020
- Manufacturer
- Generac Model # 7043-2
- Rated output
- 22 kW LP / 19.5 kW NG
- Fuel
- Natural Gas
- Home sized for
- 5,300 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Howell homeowners
Can the existing natural-gas service in a Howell home supply a generator?
Often yes, but the gas system has to be evaluated first. The review covers the generator's BTU demand, meter capacity, available pressure, regulator capacity, pipe diameter and length, and every other gas appliance in the house -- furnace, boiler, water heater, range and fireplace among them.
How can a whole house be carried on a smaller electrical service?
Through load management. One or more large loads are controlled so they do not start at the same moment, or shut down briefly if generator demand climbs too high. That is what allows whole-house coverage where the raw sum of every connected load would otherwise exceed the machine.
What is the main line circuit breaker on a generator?
It is the generator's primary AC output breaker. Worth knowing because if it is open the engine can run without delivering any power through the transfer system -- a machine that sounds like it is working while the house stays dark.