Mark from Atlantic Highlands, NJ has been a Green Sun Energy Services client since April of 2022. The generator was commissioned that August: 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 14 kW across the 2,800 square foot house, so the machine carries a wide margin over what the code requires. Surge protection matters more here than the specification sheet suggests: power coming back after an outage is rarely clean, and the moment the grid returns is when connected equipment is most exposed. The generator is supported by annual maintenance, an extended parts-and-labor warranty, and monitoring we manage.
Project Facts
- Location
- Atlantic Highlands, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- April 2022
- Manufacturer
- Generac Model # 7042-2
- Rated output
- 22 kW LP / 19.5 kW NG
- Fuel
- Natural Gas
- Home sized for
- 2,800 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Atlantic Highlands homeowners
What should a Atlantic Highlands homeowner look for in a generator installer?
A contractor who can design, permit, install, commission, maintain and repair the whole system rather than one who sells the machine. That means generator sizing and transfer equipment, disconnect and shutdown requirements, grounding and bonding, the manufacturer's own installation requirements, gas or propane capacity and pressure, the model-specific clearances, the municipal zoning setbacks, windows and vents and carbon-monoxide entry points, flood requirements where they apply, permits and inspections, utility coordination, load management, commissioning, warranty registration, monitoring and long-term service. The lowest proposal is not necessarily the lowest cost over the life of the system.
What size propane tank does a generator need?
Tank size follows the generator's capacity, the outage duration you want to cover, the climate, the tank's vaporisation capacity and any other appliances drawing off the same tank. Standby generator applications call for a substantial storage volume rather than a small portable cylinder, and the propane supplier's requirements form part of the design.
What gas pressure does a generator need?
It is model-specific and has to be read off the specification sheet rather than assumed. A current 22 kW model, for instance, specifies a minimum natural-gas pressure of 3.5 inches water column. Different models carry different requirements.