Quick Hits

Episode 3: Signage & Source Identification (710.10)

SLIDE 1 (HOOK / COVER) ⚡ NEC Quick Hit: Stand-Alone Source Identification (Part 3 - Article 710) ⚡

When first responders or service electricians walk up to a building supplied by off-grid power sources, clear signage is critical for safety. Let's break down Section 710.10 directory requirements! 👇

SLIDE 2 (DIRECTORY & PLAQUE MANDATES) Where & What to Label:

• Disconnect Location: A permanent plaque, label, or directory must be installed at each building power source disconnecting means location (or an approved readily visible location).

• Denoting Sources: The plaque must clearly denote the physical location of each power source disconnecting means serving the building or structure.

SLIDE 3 (MULTIPLE SOURCE MARKINGS) When Multiple Sources Are Present:

• Where multiple power sources supply the building (e.g., solar PV + generator + ESS), marking requirements must comply with Section 705.10.

• This ensures clear identification of all disconnecting means and emergency contact information, along with proper caution warnings.

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

Never skip directory plaques on remote buildings or off-grid homesteads! In an emergency, firefighters need to know instantly where every power source disconnect is located before entering a structure.

💬 Save this post for your next service disconnect labeling check! 🔗

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