Orange USA marking identifies conduit for which type?

Orange USA marking identifies conduit for which type?

• A. Telecommunication, alarm or signal lines conduit
• B. Electric power lines conduit
• C. Water supply conduit
• D. Gas lines conduit

Answer: (A)

Conduit color and markings show what type of wiring is inside, so installers know what rules apply. In the United States, orange-marked conduit is the convention for telecommunication, alarm, or signaling cables. This helps distinguish these low‑voltage circuits from electric power conductors, reducing the chance of misidentification and ensuring the right fittings, protection, and separation are used. Other systems use different colors—gas lines are typically indicated with yellow, water with blue—so the orange cue specifically points to telecommunication, alarm, or signaling lines.

Conduit color and markings show what type of wiring is inside, so installers know what rules apply. In the United States, orange-marked conduit is the convention for telecommunication, alarm, or signaling cables. This helps distinguish these low‑voltage circuits from electric power conductors, reducing the chance of misidentification and ensuring the right fittings, protection, and separation are used. Other systems use different colors—gas lines are typically indicated with yellow, water with blue—so the orange cue specifically points to telecommunication, alarm, or signaling lines.