⚡ NEC Quick Hit: Article 352 - PVC Schedule 80 ⚡ 

Heavy-duty Schedule 80 PVC has thicker walls than Schedule 40, meaning less internal area for your conductors. Don't blow your fill calculations—here is your Chapter 9 breakdown from 1/2" to 6" 👇

SLIDE 2 (SMALLER TRADE SIZES) Small Sch 80 PVC Trade Sizes:

• 1/2" (Metric 16)

  • 100% Total Area: 0.217 in²

  • Over 2 Wires (40%): 0.087 in²

  • ID: 0.526 in.

• 3/4" (Metric 21)

  • 100% Total Area: 0.409 in²

  • Over 2 Wires (40%): 0.164 in²

  • ID: 0.722 in.

• 1" (Metric 27)

  • 100% Total Area: 0.688 in²

  • Over 2 Wires (40%): 0.275 in²

  • ID: 0.936 in.

SLIDE 3 (MEDIUM TO LARGE SIZES) Medium to Large Sch 80 PVC Sizes (40% Fill Limit):

• 1-1/4": 0.495 in² (100% = 1.237 in² | ID: 1.255 in.)

• 1-1/2": 0.684 in² (100% = 1.711 in² | ID: 1.476 in.)

• 2": 1.150 in² (100% = 2.874 in² | ID: 1.913 in.)

• 3": 2.577 in² (100% = 6.442 in² | ID: 2.864 in.)

• 4": 4.503 in² (100% = 11.258 in² | ID: 3.786 in.)

⚠️ Note: 3/8" trade size is skipped entirely for PVC (starts at 1/2").

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

Schedule 80 is built for physical protection (like risers and exposed outdoor runs), but that extra wall thickness eats up serious conduit space compared to Schedule 40. Always check your print to make sure you're reading the right schedule table!

💬 Save this post for your next service entrance or riser stub-up! 🔗 More code breakdowns & study tools at www.JoshTheSparky.com