National Electrical Installation Standards

Standards as High as Your Own

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Monday, August 26, 2019

Question:

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
A

Answer:

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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