Derek from Lincroft, NJ has been a Green Sun Energy Services client since February of 2023, and added a car charger six weeks after the generator went in.
A 24 kW Generac on three management modules
Commissioned on 15 May 2023. The calculation asked for a minimum of 17 kW under NEC Article 220 Part IV and a Generac rated 21 kW on natural gas went in – 24 kW were it running on propane – behind a 200-amp managed whole-house transfer switch with whole-house surge protection and three smart management modules. Three is more than most houses need, and the load survey explains it: 3,467 square feet with a refrigerator, a separate freezer, a dishwasher, a washer, a gas dryer and two sump pumps. Each module takes charge of one large intermittent load and holds it back only for as long as it would otherwise overrun the machine, which is what lets a whole-house switch stay a whole-house switch on a property this size. The generator has been on our Diamond plan since: annual maintenance, extended parts-and-labor cover and remote monitoring that Green Sun runs directly.
A ChargePoint on a 60-amp circuit
31 July, six weeks later. The household bought the charger and we installed it – hardwired, J1772, on a dedicated 60-amp circuit at 11.5 kW, roughly 36 miles of range an hour, with a management module of its own.
Why this is the easy order
Adding a car charger to a house that already has a standby generator is the simplest version of this job, and it is worth saying why. The generator forced a proper survey of the service in May – every load in the house counted, measured, and given a module where it needed one. By the end of July, when the charger arrived, none of that had to be repeated. The only new question was whether the panel and the machine could take another large intermittent load, and three-quarters of the answer was already written down. It also means the charger is managed from both directions: held back by its own module when the panel is busy, and held back again by the generator’s arrangement when the machine is carrying the house. A car that charges overnight is the easiest big load in a home to defer, and this house is set up to defer it.
Project Facts
- Location
- Lincroft, NJ
- Services
- EV Charger Installation, Standby Generator Installation, Standby Generator Service
- Client since
- February 2023
Standby generator
- Manufacturer
- Generac Model # 7209
- Rated output
- 24 kW LP / 21 kW NG
- Fuel
- Natural Gas
- Home sized for
- 3,467 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
EV charger
- Charger
- Customer Supplied ChargePoint Model # CPH50-NEMA6-50-L23
- Charging port
- CCS (J1772)
- Circuit breaker
- 60 amp
- Estimated range added per hour
- Estimated Range Per Hour: 36 mi / 58 km
Questions from Lincroft homeowners
Standby generatorHow far from the property line does a generator need to be in Lincroft?
There is no single statewide New Jersey property-line setback for a residential generator. Setbacks are set by the municipality's zoning ordinance, so the requirement is a Lincroft question rather than a general one. A generator can meet every manufacturer clearance and still breach a side-yard or rear-yard setback, which is why the zoning review happens before the location is fixed.
EV chargingDo two chargers need twice as much electrical service?
Not necessarily. Power-management features can divide the available charging capacity between several units -- Tesla's group power management supports as many as six Wall Connectors sharing an established limit. Two chargers can be installed while the system holds their combined load to something the house can support.
Standby generatorCan the generator be connected to any nearby gas pipe?
No. The branch supplying the generator has to be sized for the flow and pressure the machine needs. A pipe that happens to be close by may be too small, or may already be carrying too much load. Undersized piping shows up as poor starting, unstable running, reduced output or a generator that shuts down under load.