Quick Hits

Episode 2: Plugs, Connectors & Portable Feeder OCPDs (530.9 – 530.23)

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: Studio Plugs & Feeder OCPDs (Part 2) ⚡

How are studio receptacles rated? What are the strict overcurrent protection rules for single-conductor portable cables? Let's check Sections 530.9 through 530.23! 👇

SLIDE 2 (PLUGS, RECEPTACLES & SINGLE-POLE CONNECTORS)

Ampacity and Labeling:

• Rating Mandates: Plugs and receptacles must be rated in amperes, with voltage ratings not less than nominal circuit voltage and ampacities not less than OCPD ratings. Table 210.21(B)(2) does not apply.

• T-Slot Exceptions: Standard 125-volt, 20-ampere nonlocking T-slot receptacles are permitted to accept a 15-ampere attachment plug of the same voltage rating.

• Single-Pole Separable Connectors: Must comply with Section 406.28. Paralleled input devices must display a prominent warning label indicating internal parallel connections and must be guarded against accidental contact.

SLIDE 3 (PORTABLE WIRING & 400% OCPD RULE)

Protecting Production Cables:

• Stage Set Wiring: Must use listed hard-use flexible cords, or extra-hard usage where subject to physical damage.

• Temporary Wall Penetrations: Portable feeder cables can temporarily penetrate fire-rated walls if the opening is noncombustible and sealed with listed firestop material.

• Single-Conductor Feeder Protection: Portable single-conductor feeder cables using single-pole connectors must be protected by OCPDs set at not more than 400 percent of the cable ampacity listed in Table 400.5(A)(2).

SLIDE 4 (WRAP-UP)

💡 Apprentice Pro-Tip: AC power distribution boxes used in production areas must always be listed and equipped with polarized, grounding-type receptacles!

💬 Save this post for your next on-location power distribution setup!

🔗 More code breakdowns at www.JoshTheSparky.com

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