Quick Hits

Episode 2: Area Classifications for Systems and Booths (512.5)

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: Cannabis Extraction Area Classifications (Part 2) ⚡

How far do Class I, Division 1 and Division 2 boundaries extend around an extraction booth or system? Let's check Section 512.5! 👇

SLIDE 2 (SYSTEMS WHERE VAPORS ARE RELEASED)

Defining Division/Zone Boundaries:

• Class I, Division 1 (or Zone 1): The space within 915 mm (3 ft) in all directions from equipment/containers releasing flammable vapors, extending to the floor. Tanks and container interiors are also Class I, Division 1 / Zone 0.

• Class I, Division 2 (or Zone 2): Extends 610 mm (2 ft) beyond the Division 1 area, plus an additional 1525 mm (5 ft) horizontally up to 460 mm (18 in.) above the floor.

• Sumps & Pits: Pits or below-grade channels within 3.05 m (10 ft) horizontally of a vapor source are Class I, Division 1 / Zone 1.

SLIDE 3 (CANNABIS OIL BOOTHS)

Booth Ventilation & Exhaust Rules:

• Exhaust Safety: Air exhausted from cannabis oil booths shall not be recirculated or exhausted into the room where the booth is installed.

• Booth Classifications: Where flammable vapors are released, the space within the booth is Class I, Division 1 / Zone 1, and the space within 915 mm (3 ft) of any opening is Class I, Division 2 / Zone 2.

SLIDE 4 (WRAP-UP)

💡 Apprentice Pro-Tip: If equipment is specifically marked to indicate that solvent release is maintained below 25% of the Lower Flammable Limit (LFL) without ventilation, the immediate 3-foot boundary drops from Division 1 down to a Class I, Division 2 location!

💬 Save this post for your next hazardous area classification map!

🔗 More code breakdowns at www.JoshTheSparky.com

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