Quick Hits

EPISODE 2 — Wiring on Buildings, Conductor Entry & Attachment Points (267.10, 267.12, 267.14, 267.15, 267.16)

Slide 1 — Hook "Today: how outdoor medium/high-voltage conductors attach to and run along buildings."

Slide 2 — 267.10 & 267.12

• 267.10: outside wiring installed ON building surfaces has to use one of the methods permitted in 305.12.

• 267.12: conductors entering/exiting a building follow the same rules as service conductors in 268.52 (individual open conductors through bushings/insulating tubes with drip loops); overhead conductors attached to buildings follow 268.54 (secured, arranged so water can't enter equipment).

Slide 3 — 267.14, 267.15, 267.16

• 267.14: open conductors need support on knobs/racks/brackets/strain insulators made of glass, porcelain, or other approved materials, plus compliance with 267.21's spacing/support rules.

• 267.15: conductors passing OVER a building need secure support.

• 267.16: point of attachment follows 268.26 (same 10 ft minimum height rule you learned in the Services article); means of attachment follows 268.27 (noncombustible, nonabsorbent insulators securely fastened to the structure).

Slide 4 — Quiz + CTA Q: "The means of attachment for outside branch-circuit/feeder conductors to a building follows the same rule as which article?" A) Article 210 B) Article 268 (Services) C) Article 215 D) Article 300

✅ Answer: B — 267.16(B) points to 268.27, the Services article's means-of-attachment rule.

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