National Electrical Installation Standards

Standards as High as Your Own

Monday, August 26, 2019


Re: CQD answer published Tuesday, August 20, 2019 -EVSE

Regarding the Mon 8/29 vehicle charger question: I assume that Greg meant that "It does NOT look like there is any protection . . . " - AND more critically, I assume that these "ran several hundred feet" cables are not for building system voltage, but rather for carrying vehicle charger output.  (This would be a first for me, I have never seen vehicle charging cables longer than 20 to 30 feet long).

I have to assume that he is writing about cables between the charger and the vehicle - I believe that these would be "Output Cable to the Vehicle" defined cables with an "Electric Vehicle Connector" at one end. As such, I believe that they must be a part of a factory designed, built, and listed assembly.

These exceptionally long cables might be field-construction allowed if installed in accordance with listed installation instructions.  In this case, I believe that the protection for the cables is within the charger. As I understand it, chargers run several cable safety/function tests after the connector is inserted into the vehicle charging port before the charger will energize the actual charging conductors which are also in the cable.

Scott Cline


Hey Scott thanks for your comment and for providing the additional information. The question stated that the "charging cables from a level 3 electric vehicle charger" and "They ran several hundred feet to vehicle dispensing units from the main charger" so we considered them as long output cables.

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