Quick Hits

Episode 3: Nominal 120V Systems, Receptacles & Panelboards (551.40 – 551.46)

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: RV 120V Systems & Receptacles (Part 3) ⚡

GFCI protection, unique RV plug configurations, and panelboard clearances—let's review Sections 551.40 through 551.46! 👇

SLIDE 2 (RECEPTACLE SPACING & GFCI RULES)

Outlets and Protection:

• The 6-Foot Spacing Rule: Receptacles must be installed at wall spaces 600 mm (2 ft) wide or more so no point along the floor line is over 1.8 m (6 ft) from an outlet. Face-up receptacles in countertops are prohibited.

• Mandatory GFCIs: Required adjacent to bathroom lavatories, kitchen countertop surfaces within 1.8 m (6 ft) of sinks or lavatories, shower/tub areas, and on the vehicle exterior.

SLIDE 3 (PANELBOARDS & SUPPLY CORDS)

Access and Power Entry:

• Panelboard Accessibility: Must be in a readily accessible location with dedicated working clearance (min 600 mm / 24 in. wide, 750 mm / 30 in. deep) when the RV is in setup mode.

• RV-Specific Plugs: The 30-ampere RV plug configuration is a unique configuration specifically designed for recreational vehicles, distinct from standard NEMA 5-30 configurations.

SLIDE 4 (WRAP-UP) 💡 Apprentice Pro-Tip: 

Grounding Monitor Interrupters (GMIs) are mandatory on 30- and 50-amp RV feeders to monitor and interrupt power if the grounding conductor is lost or energized!

💬 Save this post for your next RV panel upgrade!

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