Quick Hits

Episode 4: GFCI, SPGFCI Protection & Disconnects (624.24(D), 626.31, 626.27)

SLIDE 1 (HOOK / COVER) ⚡ NEC Quick Hit: GFCI, SPGFCI & Interactive Systems (Part 4) ⚡ 

When does a TRU circuit require Special Purpose GFCI protection? How do interactive systems tie into truck stops? Let's finish Article 626! 👇

SLIDE 2 (PERSONNEL PROTECTION: GFCI vs. SPGFCI)

Keeping Drivers Safe:

• Standard GFCI: All 20A cab receptacle outlets must be provided with standard Class A ground-fault circuit-interrupter (GFCI) protection.

• Special Purpose GFCI (SPGFCI): TRU receptacles supplied by branch circuits rated more than 150 volts to ground, 100 amperes or less require SPGFCI personnel protection (Note: This requirement becomes effective January 1, 2029).

SLIDE 3 (BIDIRECTIONAL & INTERACTIVE SYSTEMS)

Vehicle-to-Grid and Standby Power:

• Listed for Purpose: Systems intended to interconnect refrigerated trucks or trailers to serve as optional standby sources or bidirectional power feeds must be listed and comply with Article 702 or 705.

• Backfeed Prevention: Means must prevent energy from being back-fed into the parking space wiring upon loss of utility power.

SLIDE 4 (WRAP-UP)

💡 Apprentice Pro-Tip: Every truck parking space supply disconnect must be lockable open in accordance with Section 110.25, ensuring absolute safety for service personnel working on pedestals or refrigerated units!

💬 Save this post for your final code review on electrified truck parking spaces! 🔗 

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