Quick Hits

EPISODE 1 — Scope, Listing and Reconditioned Equipment for cabinet boxes (312.1, 312.2, 312.3)

Slide 1 — Hook "New article! Article 312 covers the boxes that house your switches, breakers, and meters — cabinets, cutout boxes, and meter socket enclosures." Text overlay: ARTICLE 312 — CABINETS, CUTOUT BOXES & METER SOCKET ENCLOSURES 🔌 Part 1 of 8

Slide 2 — 312.1 Scope

• Covers installation and construction specs for cabinets (swinging-door enclosures), cutout boxes, and meter socket enclosures.

• Doesn't apply to equipment over 1000V AC / 1500V DC — except where specifically referenced elsewhere in the code.

• Worth remembering: local utilities often have their OWN spec requirements for meter sockets/metering cabinets beyond the NEC — always check with them too.

Slide 3 — 312.2 & 312.3

• Listing: nonmetallic cabinets must be listed, OR submitted for approval before installation.

• Reconditioned equipment: cabinets, cabinet cutout boxes, and cabinet meter socket enclosures can NEVER be reconditioned and reinstalled — same "no reconditioned safety-critical gear" logic you've seen elsewhere in the code (GFCI/AFCI devices, for example).

Slide 4 — Quiz + CTA Q: "Can a reconditioned cabinet meter socket enclosure be installed under Article 312?" A) Yes, if inspected first B) No — never permitted C) Only for temporary installations D) Only with utility approval

✅ Answer: B — 312.3(B): reconditioned cabinets, cutout boxes, and meter socket enclosures are never permitted.

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