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⚡ NEC Quick Hit: Compact Conductor Dimensions (Table 5A) ⚡
Pulling compact stranded wire? Compact copper and aluminum conductors feature compressed strands that reduce overall outer diameters, saving precious space in your conduit fills. Let's break down Chapter 9 Table 5A! 👇
SLIDE 2 (SMALLER COMPACT SIZES: #8 to #2) Compact Building Wire Dimensions (THHN / XHHW):
#8 AWG THHN: Area: 0.0394 in² | OD: 0.224 in.
#6 AWG THHN: Area: 0.0530 in² | OD: 0.260 in.
#4 AWG THHN: Area: 0.0730 in² | OD: 0.305 in.
#2 AWG THHN: Area: 0.1017 in² | OD: 0.360 in.
1/0 AWG THHN: Area: 0.1590 in² | OD: 0.450 in.
SLIDE 3 (LARGE FEEDER SIZES: 4/0 to 500 kcmil) Compact Feeder Wire (THHN / XHHW):
4/0 AWG THHN: Area: 0.2780 in² | OD: 0.595 in.
250 kcmil THHN: Area: 0.3525 in² | OD: 0.670 in.
350 kcmil THHN: Area: 0.4656 in² | OD: 0.770 in.
500 kcmil THHN: Area: 0.6151 in² | OD: 0.885 in.
1000 kcmil THHN: Area: 1.2370 in² | OD: 1.255 in.
SLIDE 4 (FIELD TAKEAWAY & WRAP-UP) 💡 Apprentice Pro-Tip:
Compare standard stranded 500 kcmil THHN (Table 5 area: 0.7901 in²) to Compact 500 kcmil THHN (Table 5A area: 0.6151 in²)! That significant reduction in cross-sectional area makes compact wire a game-changer for heavy commercial feeder pulls.
💬 Save this post for your next heavy service or feeder calculation! 🔗 More code breakdowns and study tools at www.JoshTheSparky.com
⚠️ Educational NoticeQuick Hits are educational explanations based on my understanding of the NEC. Always verify requirements in the current adopted NEC, applicable local amendments, manufacturer instructions, and with the AHJ.
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