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625 and 625.1 Electric Vehicle Power Transfer Systems

Revision

Change Summary

  • With the addition of power export equipment and bidirectional current flow equipment, a change to the title and scope of Article 625 was needed for clarity.
NEC® Text

Article 625 Electric Vehicle Charging Power Transfer System
625.1 Scope. This article covers the electrical conductors and equipment external to connecting an electric vehicle to premises wiring that connect an electric vehicle to a supply of electricity by conductive, inductive, or wireless power transfer (contactless inductive charging) means, and the installation of equipment and devices related to electric vehicle charging for the purposes of charging, power export, or bidirectional current flow.

Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2020 edition.
National Electrical Code®, Copyright 2019, National Fire Protection Association, Quincy, MA. All rights reserved.

Expert Analysis

For the 2020 NEC the title of the article is being updated to “Electric Vehicle Power Transfer Systems” and the scope is being changed to reflect these revisions as well. Power export equipment and bidirectional current flow equipment provisions are being added to a couple of definitions [Electric Vehicle Power Export Equipment (EVPE) and Electric Vehicle Supply Equipment (EVSE)]. These terms are also being added at 625.41 (Overcurrent Protection), 625.43 (Disconnection Means), and 625.48 (Interactive Systems). Power export equipment and bidirectional current flow equipment can cover a wide range of devices, including but not limited to: an inverter regardless of off-board or on board, an EVSE that works for reverse power flow from a vehicle, an AC outlet regardless of off-board or on-board, a dc 12 volt outlet, and a USB socket as a 5 volt power outlet.

 

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