Quick Hits

Episode 4: Special Equipment, Mobile Servicing & Grounding (513.10 – 513.16)

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: Hangar Special Equipment & Grounding (Part 4) ⚡

Can you charge aircraft batteries inside a hangar? What warning signs are required on mobile ground support units? Let's finish Article 513! 👇

SLIDE 2 (AIRCRAFT SYSTEMS & BATTERY CHARGING)

Operational Safety Mandates:

• De-energizing: Aircraft electrical systems must be de-energized when stored and whenever possible during maintenance.

• Battery Restrictions: Aircraft batteries cannot be charged while installed in an aircraft located inside or partially inside a hangar. Battery chargers must be located in separate rooms or unclassified areas.

SLIDE 3 (MOBILE SERVICING & GROUNDING RULES)

Required Warning Signs:

• Mobile Energizers & Servicing Units: Equipment with electrical components not suitable for Class I, Division 2 must keep fixed wiring at least 450 mm (18 in.) above the floor and carry warning signs:
  WARNING: KEEP 5 FT CLEAR OF AIRCRAFT ENGINES AND FUEL TANK AREAS (or 1.5 meters).

• Grounding: All metal raceways, cable sheaths, and non-current-carrying metal parts of electrical equipment must be solidly grounded per 500.30 or 505.30.

SLIDE 4 (WRAP-UP)

💡 Apprentice Pro-Tip: Portable utilization equipment used within a hangar must be suitable for Class I, Division 2 or Zone 2 locations and use extra-hard usage flexible cords with an equipment grounding conductor!

💬 Save this post for your final code review on Aircraft Hangars!

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