Quick Hits

Episode 3: Vertical Supports, Splices & Equipment Grounding (772.5(G) – 772.60)

SLIDE 1 (HOOK / COVER) ⚡ NEC Quick Hit: Vertical Runs & Grounding (Part 3 - Article 772) ⚡ 

How do you support fire-resistive cables running up a multi-story shaft? What wire do you use for the equipment grounding conductor? Let's check out Section 772.5(G) and 772.60! 👇

SLIDE 2 (VERTICAL SUPPORTS & LISTED SPLICES) Risers & Joint Rules:

• Vertical Support: Cables in vertical raceways must be supported per the system listing and Section 720.19 requirements.

• No Field-Jury Rigged Splices: Only splices that are explicitly part of the system listing are permitted, complete with manufacturer installation instructions.

SLIDE 3 (EQUIPMENT GROUNDING CONDUCTORS - EGC) Grounding the System:

• Same Cable EGC: Fire-resistive cables installed in raceways requiring an equipment grounding conductor must use the same fire-resistive cable described in the system.

• Alternative EGCs: If alternative grounding conductors are used, they must be explicitly listed with the system and marked with the system number.

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

Don't assume you can pull a standard bare copper ground wire alongside a fire-resistive cable unless the system listing specifically authorizes it. Ground continuity is vital for circuit survivability under fire stress!

💬 Save this post for your next multi-story life-safety riser installation! 🔗 

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