Independent support wires in nonfire-rated assemblies must be distinguishable from which type of wires?

• A. Grounding wires
• B. Suspended-ceiling framing wires
• C. Conduit wires
• D. Junction box wires

Answer: (B)

The key idea is to keep non-electrical and electrical elements clearly separate in a nonfire-rated ceiling. Independent support wires used to hang fixtures must be clearly distinguishable from the wires that form the suspended-ceiling framing. This makes it easy for installers and inspectors to tell apart the structural support wires from any electrical conductors, reducing the risk of confusion, accidental disturbance, or improper use. Typically this is done with color coding, tagging, or other clear markings.