Standby Generator Service in Union, NJ | A 9 kW Generac on a 40-Amp Switch

Union, NJ · Client since June 2021

Karen from Union, NJ has been a Green Sun Energy Services client since June of 2021. The Generac 7030 at the house is rated 9 kW on propane and 8 kW on natural gas, runs on natural gas, and feeds a 40-amp transfer switch. It was installed in January of 2017 by another company, and Green Sun serviced it in June of 2021. Nine kilowatts on a 40-amp switch is an essential-circuits installation and reads as one: a chosen group of circuits, sized so the machine can hold them without argument.

Project Facts

Location
Union, NJ
Service
Standby Generator Service
Client since
June 2021
Manufacturer
Generac Model # 7030
Rated output
9 kW LP / 8 kW NG
Fuel
Natural Gas
Transfer switch
40 amp
Load management
Dedicated (Essential) Circuits

Standby generator questions from Union homeowners

Does new gas piping have to be pressure tested in Union?

Yes. Gas piping subject to the adopted fuel-gas code must be inspected and tested before it is accepted. New Jersey adopts the 2024 International Fuel Gas Code, which governs the inspection, the test pressure and how long the test has to hold.

Does a generator produce less on natural gas than on propane?

Some models do have a lower rated maximum output on natural gas than on propane -- a current 22 kW machine is rated 22 kW on LP and 21 kW on natural gas. Other models carry their own ratings, so the model-specific specification sheet is what settles it rather than a general rule.

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.

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