Standby Generator and EV Charger in Colts Neck, NJ | Thirty Essential Circuits and a 60-Amp Charger

Colts Neck, NJ · Client since October 2024

John from Colts Neck, NJ has been a Green Sun Energy Services client since October of 2024, and both jobs on this page were done within five weeks of each other.

A 22.5 kW Generac on thirty circuits

Commissioned on 6 January 2025. The house is 8,037 square feet on a 400-amp service, and the whole-house calculation under NEC Article 220 came to 32 kW. The machine that went in is rated 22.5 kW on natural gas – 26 kW on propane – which is not a shortfall but a different question answered. Rather than back up the whole of an eight-thousand-square-foot house, the generator feeds a thirty-circuit subpanel through a 200-amp transfer switch, with three smart management modules arbitrating between the largest loads on it.

Thirty circuits is a great deal of house. It is not the refrigerator and a lamp. But it is a decision about what has to keep running, rather than an attempt to make an outage invisible across eight thousand square feet – and the load survey shows why somebody had to make that decision: an electric range and oven combination, a separate double electric oven, two dishwashers, two refrigerators, a freezer, a washer, a gas dryer, a sump pump and a well pump. Backing all of it at once would have meant a machine half as large again, running mostly to be ready for a coincidence. The well pump is the entry that settles the priorities: on a well, no power means no water at all.

A ChargePoint on a 60-amp circuit

10 February 2025, five weeks later. The household supplied the charger and we hardwired it within ten feet of the panel – J1772, dedicated 60-amp circuit, 11.5 kW, roughly 36 miles of range an hour. With the charger counted in, the calculated minimum service came to 276.78 amps, comfortably inside 400, which is why no upgrade was ever in question.

The question a big house has to answer twice

Both jobs here turn on the same decision, taken five weeks apart: what has to keep working, and what can wait. On the generator it produced thirty circuits instead of eight thousand square feet. On the charger the same logic points the other way round – a car charger is the largest single load most homes ever add and among the easiest to do without for a few days, which is exactly why it is the wrong load to size a generator around. A house that tries to charge a car through an outage buys a machine twice the size it needs and runs it at a fraction of its capacity for years to be ready for the occasion. Answered honestly, on 400 amps and eight thousand square feet, the list of things that genuinely cannot stop is still shorter than the house is.

Questions from Colts Neck homeowners

EV chargingWhat is the difference between a NEMA 6-50 and a NEMA 14-50?

Both are used for 240-volt EV charging, but they are wired differently: a 14-50 includes a neutral conductor and a 6-50 normally does not. Most charging equipment uses two hot conductors and an equipment ground and has no need of the neutral. The equipment's own instructions decide which is correct.

Standby generatorWhich way should the generator face?

Orientation has to comply with the installation instructions and must not create an unsafe exhaust or carbon-monoxide condition. Windows, doors, soffit openings, intake vents, window wells and mechanical fresh-air intakes all bear on it. Which way the machine faces is part of the site design, not an aesthetic choice made at the end.

EV chargingDo I need a permit for a home EV charger in Colts Neck, NJ?

A new hardwired charger or new branch circuit generally requires electrical permitting and inspection under New Jersey's Uniform Construction Code. A cord-and-plug charger using an existing compatible receptacle may be treated differently, so the local electrical subcode official should be consulted for the specific installation.