jmfelectric
Member
Greetings everyone,
Can we talk about art 625, Electric Vehicle Charging System for a minute. One of my clients has asked me to look into installing a few plugs for his guests to plug and charge their cars (Tesla SUV specifically)
While at the facility, I noticed someone (internal staff authorized to do so) had already installed a NEMA 14-50 receptacle/50 amp breaker and labeled it EV charging station.
It seemed pretty straight fwd and not a big deal. When I got back to the office, I sat down with my 2011 NEC and did a little reading. Here's where my question comes in,
625.22, Personnel Protection System, states all EV supply equipment shall have a listed system of protection against electric shock of personnel. What exactly does that mean?
Most of the owners of these autos have "charging stations" at home (which I presume has the Personnel Protection System built in), and the car comes with a cord and plug with an adapter that allows the proprietary plug to be used with a standard NEMA configuration in the event they need a charge while out and about.
If one really looks close, art 625.18 and 625.19 also make it seem like a standard NEMA 14-50 plug connected to a 50 amp breaker is not really a code legal way to charge the autos.
Is it possible that the charging system within the autos themselves have these functions built in or does one need an actual charging station and not just a receptacle?
As usual, thanks for any help and education on this subject
John
Can we talk about art 625, Electric Vehicle Charging System for a minute. One of my clients has asked me to look into installing a few plugs for his guests to plug and charge their cars (Tesla SUV specifically)
While at the facility, I noticed someone (internal staff authorized to do so) had already installed a NEMA 14-50 receptacle/50 amp breaker and labeled it EV charging station.
It seemed pretty straight fwd and not a big deal. When I got back to the office, I sat down with my 2011 NEC and did a little reading. Here's where my question comes in,
625.22, Personnel Protection System, states all EV supply equipment shall have a listed system of protection against electric shock of personnel. What exactly does that mean?
Most of the owners of these autos have "charging stations" at home (which I presume has the Personnel Protection System built in), and the car comes with a cord and plug with an adapter that allows the proprietary plug to be used with a standard NEMA configuration in the event they need a charge while out and about.
If one really looks close, art 625.18 and 625.19 also make it seem like a standard NEMA 14-50 plug connected to a 50 amp breaker is not really a code legal way to charge the autos.
Is it possible that the charging system within the autos themselves have these functions built in or does one need an actual charging station and not just a receptacle?
As usual, thanks for any help and education on this subject
John
