Amy from Princeton, NJ has been a Green Sun Energy Services client since October of 2025. The charger went into the garage that November: a ChargePoint Level 2 unit rated 7.7 kW on a dedicated 40-amp circuit, installed within ten feet of the breaker box, with load management fitted alongside it. The load management module is the part worth understanding on a 40-amp installation: rather than requiring a larger service, it lets the charger draw what is available and step back when the house needs the capacity elsewhere. A utility rebate application was filed and closed as part of the job, which is work that happens after the installer has left and is easy to leave undone.
Project Facts
- Location
- Princeton, NJ
- Service
- EV Charger Installation
- Client since
- October 2025
- Charger
- ChargePoint Model # CPH50-NEMA6-50-L23
- Charging port
- CCS (J1772)
- Circuit breaker
- 40 amp
- Charging stations
- 1
- Estimated range added per hour
- Estimated Range Per Hour: 25 mi / 40 km
EV charger questions from Princeton homeowners
What electrical code applies to an EV charger installed in Princeton?
New Jersey adopts the National Electrical Code through the Uniform Construction Code, and the edition in force statewide is what the municipal inspector enforces. EV charging is governed principally by Article 625, which covers the branch circuit, overcurrent protection, continuous loads, load management, the disconnecting means, ground-fault protection and cord management.
Should the highest-amperage charger always be installed?
No. The right charging rate balances daily driving, what the vehicle can accept, the capacity available in the electrical system and what the installation involves. Upgrading a service purely to gain a few more miles of range per hour is rarely the sensible trade.
Can an EV charger be installed outdoors?
Yes. Both ChargePoint Home Flex and Tesla Wall Connector are designed for indoor or outdoor installation when put in according to the manufacturer's instructions. The mounting surface, the wiring method, the conduit and the sealing against weather all have to satisfy those instructions and the electrical code.