You are right, 625.22 is the article in the 2017 NEC that covers GFCI protection for EV charging equipment. Let's break down your questions

1. Understanding 625.22 in the 2017 NEC
GFCI Protection Required

Yes, under the 2017 NEC 625.22, GFCI protection is required for 125/250-volt receptacles rated 50 amps or less (which includes a NEMA 14-50) that supply electric vehicle charging equipment. This is a critical safety measure to protect against ground faults, which can be particularly dangerous around electric vehicles and charging equipment.

Within 12 Inches of the Attachment Plug

This is where things get a little more nuanced. This means that the GFCI protection must be installed in the cord that's 12 inches to where it plugs into the car, or the GFCI protection is built into the EVSE equipment.

2. In Sight of Attachment Plug? The code doesn't explicitly state that the GFCI device needs to be within sight of the attachment plug, however that is referring to the EV supply equipment, not the receptacle itself.3. GFCI Location: Inside vs. Outside Acceptable Scenario

Yes, the GFCI protection can be inside, while the receptacle is outside. It is very common for the GFCI to be within the cord or EVSE.

Important Considerations and Best Practices Local Amendments

Always double-check with your local jurisdiction, as they may have amendments to the NEC that further clarify or modify these requirements. Some areas might have more stringent rules.

EVSE (Charging Station) GFCI

Many modern EV charging stations (EVSEs) have integrated GFCI protection. If you're using such a unit, you may not need additional GFCI protection at the receptacle itself, as long as the EVSE is listed and labeled as providing this protection. Always verify this in the EVSE's documentation.



Wet Locations

If the receptacle is located in a wet or damp location (e.g., outdoors), ensure that the receptacle itself is weather-rated and protected by an appropriate enclosure, in addition to the GFCI protection.

Professional Installation

It's always best to have a qualified electrician install EV charging equipment to ensure it's done safely and in compliance with all applicable codes and regulations. They can assess your specific situation and provide the best solution.

Disclaimer: I am an AI chatbot and cannot provide electrical code interpretations or advice. Always consult with a qualified and licensed electrician for electrical work and code compliance. Flag for review