Gary from Summit, NJ has been a Green Sun Energy Services client since April of 2020. The generator was commissioned that July: a Generac Guardian rated 19.5 kW on natural gas, on a 200-amp service-entrance switch with two smart management modules, one rated at 100 amps and one at 50. The load calculation asked for 14 kW across the 2,490 square foot house. One obstacle had to be dealt with first: a Verizon box sat where it blocked code-compliant access to the main service panel, and it had to be moved before the electrical work could proceed. Access clearances around a panel are not a matter of preference – an inspector will fail the work without them, so the box comes first whatever else is waiting.
Project Facts
- Location
- Summit, NJ
- Service
- Standby Generator Installation
- Client since
- April 2020
- 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 Summit homeowners
Can the existing natural-gas service in a Summit 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.
Which fuel-gas code applies?
New Jersey currently adopts the 2024 International Fuel Gas Code as its Fuel Gas Subcode, which is what governs the piping, testing and shutoff arrangements on a natural-gas generator installation.
Can a standby generator run central air conditioning?
Yes, when it is sized for it. The design has to account for both the running demand and the starting surge of the air-conditioning equipment. Load-management equipment can be used where necessary so that demand does not all arrive at once.