Kim from Farmingdale, NJ has been a Green Sun Energy Services client since July of 2019. A Generac model 7039-1 was commissioned that October, rated 18 kW on natural gas where the load calculation asked for 15 kW. The house is gas for heat, hot water and laundry, so the electric oven and the two refrigerators are most of what the machine actually has to carry. The whole 3,000 square feet transfers on a 200-amp service rather than a chosen set of circuits.
Project Facts
- Location
- Farmingdale, NJ
- Service
- Standby Generator Installation
- Client since
- July 2019
- Manufacturer
- Generac Model # 7039-1
- Rated output
- 20 kW LP / 18 kW NG
- Fuel
- Natural Gas
- Home sized for
- 3,000 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Farmingdale homeowners
Will a 20 kW generator run an entire Farmingdale 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.
Can it start during a brownout when the power is not fully off?
Yes. The controller monitors whether the utility supply is acceptable, not merely whether voltage is present, so it can start while some lights and appliances still appear to be working. That is usually the explanation when a generator runs during severe utility-voltage problems.
How does the starting battery stay charged?
The system includes battery-charging provisions so the starting battery stays ready while the generator waits for an outage. A charging fault, a blown fuse, a wiring problem or simply a tired battery can stop a generator starting when it is needed, which is why battery condition is part of routine maintenance rather than an afterthought.