Quick Hits

EPISODE 5 — Physical Damage, Cable Supports, Raceways & Vegetation — Part I Finale (267.22, 267.23, 267.24, 267.26, 267.27)

Slide 1 — Hook "Wrapping up Part I with the physical-protection details — damage, cable supports, draining raceways, and (again) why trees don't count as supports."

Slide 2 — 267.22 & 267.23

• 267.22: conductors installed on buildings/structures/poles need damage protection per 268.50 (the same service-conductor damage-protection rule).

• 267.23: multiconductor cable supports on exterior building surfaces follow 268.51 (the same knob/rack/bracket/strain-insulator support rule from the Services article).

Slide 3 — 267.24, 267.26, 267.27

• 267.24: raceways on building/structure exteriors must be arranged to drain and be listed/approved for wet locations.

• 267.26: vegetation (trees) can never be used to support overhead conductor spans — same rule you saw in Article 268.

• 267.27: raceways entering a building from outside must be sealed per 305.15(F) and 300.7(A) — spare/unused raceways too, using sealants identified for the specific insulation/shielding involved.

Slide 4 — Quiz + CTA Q: "Can vegetation such as trees be used to support overhead conductor spans under Article 267?" A) Yes, if properly reinforced B) No — never permitted C) Only for spans under 50 ft D) Only with engineering approval

✅ Answer: B — 267.26 prohibits vegetation as a support method outright, same as the Services article.

CTA: Follow for more daily quick-hit study notes 📚⚡ — Part I complete! Part II (Buildings Supplied by a Feeder/Branch Circuit) is next.

← View Chapter 2 Home

← Back To Article 266 Home

← Back To Quick Hits Home