Quick Hits

Episode 1: Scope, Listing & Limited-Energy Raceways (723.1 – 723.22)

SLIDE 1 (HOOK / COVER) ⚡ NEC Quick Hit: Limited-Energy Pathways (Part 1 - Article 723 & Raceways) ⚡

Where do the pathway rules live for low-voltage systems? Meet Article 723! Created to give raceways, cable routing assemblies, and nonmetallic cable trays for limited-energy systems their own unified home. Let's break down the raceway rules! 👇

SLIDE 2 (SCOPE & LISTING MANDATES) What Does Article 723 Cover?

• Pathway Consolidation: Governs raceways, cable routing assemblies, and cable trays installed specifically for limited-energy wiring.

• Fire & Wet Listing: Pathways must be listed as resistant to the spread of fire. If installed in wet locations, they must be listed for wet locations.

SLIDE 3 (COMMUNICATIONS RACEWAYS & INNERDUCT) Types of Approved Raceways:

• Chapter 3 Raceways: Limited-energy wires can use any standard Chapter 3 raceway (following Article 722 separation rules).

• Flexible Nonmetallic Raceways: Plenum, Riser, and General-Purpose communications raceways follow rules similar to ENT (Electrical Nonmetallic Tubing).

• Innerduct: Listed communications raceways are explicitly permitted to be pulled as innerduct inside Chapter 3 metallic or nonmetallic raceways!

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

Just like cables, communications raceways have a strict substitution hierarchy (Table 723.22(B)). You can substitute a Plenum raceway into a Riser or General-Purpose application, but you can never put a General-Purpose raceway into an air-handling plenum!

💬 Save this post for your next low-voltage pathway layout! 🔗

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