NEC 625: Electric Vehicle Power Transfer System
What This Article Covers
NEC Article 625 covers electric vehicle (EV) supply equipment (EVSE) — the chargers used to charge EVs. As EV adoption grows, Article 625 is the second-most-searched specialty article (after solar).
Key Requirements
- EVSE circuit sized for continuous load — 125% of EVSE rating
- GFCI protection required for cord-and-plug EVSE
- Disconnect required for EVSE > 60A or > 150V to ground
- Load management permitted to avoid service upgrade
- Receptacle outlets dedicated to EVSE — no other loads
Common Field Applications
- 40A Level 2 charger on a 50A branch circuit
- Installing a NEMA 14-50 outlet for portable EVSE
- Multi-charger commercial site with load management
Common Mistakes & Inspection Failures
- Sizing at 100% instead of 125%
- Sharing the EVSE circuit with another receptacle
- Missing the disconnect on a 80A unit
Related NEC Articles
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What does NEC 625 cover?
NEC Article 625 covers electric vehicle (EV) supply equipment (EVSE) — the chargers used to charge EVs. As EV adoption grows, Article 625 is the second-most-searched specialty article (after solar).
What are the key requirements of NEC 625?
Key requirements include: EVSE circuit sized for continuous load — 125% of EVSE rating; GFCI protection required for cord-and-plug EVSE; Disconnect required for EVSE > 60A or > 150V to ground. See the full requirements list on this page.
What are common mistakes with NEC 625?
Sizing at 100% instead of 125% Sharing the EVSE circuit with another receptacle Missing the disconnect on a 80A unit
Related Resources
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Michael started in the IBEW at 18 and made foreman as a 3rd-year apprentice. Thirteen years in, he’s a Local 134 journeyman, a licensed electrical contractor, a licensed Illinois teacher, and OSHA 30 and EPA 608 certified. He teaches a federally recognized pre-apprenticeship on the south side of Chicago — where he’s helped 100+ students get into the IBEW. He built Sparky AI around exactly what the NJATC exam tests and what trips people up. Prep with this and you walk in ready.