Fred H
Member
- Location
- Lynchburg Va.
EV charging stations nec cod requirments derating for multible outlets have they standadrdised thr plugs ..charging capacity
Electrical car installations ..for residence and derating codes...lookinf for in put from others.standard hook ups rating or 1 2 3 chargers
- Thread starter Fred H
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ron
Senior Member
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- New York, 40.7514,-73.9925
They are standardized to the point that every car can be charged at varied levels, depending on what plug is available.
The J1772 5-pin standard supports a wide range of single-phase alternating current (AC) charging rates from 1.44 kW (12 amps @ 120 volts) via a household NEMA 5-15 outlet up to 19.2 kW (80 amps @ 240 volts) from a EV charging station.
There is also a 7-pin Combo Coupler that has both a 5-pin J1772 connector and a CCS 2-pin connector that supports DC fast charging up to 90 kW.
The J1772 5-pin standard supports a wide range of single-phase alternating current (AC) charging rates from 1.44 kW (12 amps @ 120 volts) via a household NEMA 5-15 outlet up to 19.2 kW (80 amps @ 240 volts) from a EV charging station.
There is also a 7-pin Combo Coupler that has both a 5-pin J1772 connector and a CCS 2-pin connector that supports DC fast charging up to 90 kW.
If going residential cord and plug, most level 2 chargers want a 50A receptacle just like a residential range plug. Car chargers are continuous loads. So a 50A receptacle will allow configuring the charger for 240V 40A. There is no specific demand factor, so three of these would be a 150A load. If adding this on to a typical dwelling load, you would most likely get to apply the 0.4 factor that goes to all loads over the 10kw threshold except for hvac. So 3 chargers would increase the load calc by 60A.
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