National Electrical Installation Standards

Standards as High as Your Own

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Monday, August 19, 2019

Question:

The question I'm asking would be under the 2017 NEC. It concerns charging cables from a level 3 electric vehicle charger. They operate at 150 to 850 volt with a maximum output current of 600 amp DC per specifications. They ran several hundred feet to vehicle dispensing units from the main charger. It does look like there is any protection on the conductors from the charger. How does the code address this?

Greg Evers
A

Answer:

Hey Greg thanks for your question. Electric Vehicle Supply Equipment is required to be listed as stated in 625.5 so the requirements in the product standard address the protection of the conductors. Informational Note 2 to the definition of Electric Vehicle Supply Equipment in 625.2 states that the terms electric vehicle supply equipment and electric vehicle charging system equipment are considered to be equivalent.

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