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📱 EPISODE 1 — Article 352 (Part 1 of 3)

Rigid PVC Conduit — Scope & Uses Permitted

SLIDE 1 — What Is PVC Conduit?
🔧 THE NONMETALLIC WORKHORSE

Article 352 covers Rigid Polyvinyl Chloride Conduit (PVC). Two main schedules:
🔹 Schedule 40 — suitable for underground, aboveground, indoor, outdoor — NOT subject to physical damage
🔹 Schedule 80 — thicker walls, suitable where subject to physical damage
🔹 Types A and EB — intended specifically for underground installations

⚠️ Cold weather note: extreme cold can make nonmetallic conduits brittle and more susceptible to physical damage.

📋 Listing (352.2): PVC conduit, factory elbows, and fittings — all listed.

♻️ Reconditioned equipment (352.3): PVC conduit, elbows, and fittings are NOT permitted to be reconditioned and installed.

SLIDE 2 — Uses Permitted, Part 1 (352.10(A)–(F))
✅ WHERE PVC CAN GO

✅ Concealed — walls, floors, ceilings
✅ Encased in concrete
✅ Severe corrosive influences (per 300.8) — where chemicals match the material's approval
✅ Cinder fill
✅ Wet locations (dairies, laundries, canneries, frequently-washed walls) — the ENTIRE system (including boxes/fittings) must prevent water entry; supports/bolts/straps must be corrosion-resistant
✅ Dry and damp locations (not prohibited elsewhere)

SLIDE 3 — Uses Permitted, Part 2 (352.10(G)–(K))
✅ MORE PERMITTED USES

✅ Exposed work
✅ Underground — direct burial AND encased in concrete (see 300.7, 305.15 for burial depth requirements)
✅ Support of nonmetallic conduit bodies — but ONLY sized to the largest entering raceway trade size, and these bodies CANNOT support luminaires/equipment or contain devices beyond splicing (110.14(B)/314.16(C)(2))
✅ Higher-temp-rated conductors CAN be used inside PVC — as long as they don't OPERATE above PVC's listed temp rating
✅ Where subject to physical damage — but ONLY Schedule 80 PVC (conduit, elbows, AND fittings)

SLIDE 4 — Uses NOT Permitted + Exam Question
🚫 USES NOT PERMITTED (352.12)

❌ Hazardous (classified) locations (unless another article permits)
❌ Supporting luminaires/equipment NOT covered in 352.10(I)
❌ Subject to physical damage — EXCEPT as permitted in 352.10(K) (Schedule 80)
❌ Ambient temps EXCEEDING 50°C (122°F), unless listed otherwise
❌ Theaters/similar locations (except per 518.6 and 520.5)

🧠 TEST YOURSELF

Q: Per 352.10(K), where PVC conduit is subject to physical damage, what schedule must be used?

A) Schedule 40
B) Schedule 80
C) Either schedule is acceptable
D) PVC cannot be used at all in these locations

(Drop your answer 👇)

FOLLOW — Part 2 covers sizing, bends, and the support table ⚡ #JoshTheSparky #NEC2026 #ElectricianLife

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