What is the recommended practice for securing cables in trays or conduits?

What is the recommended practice for securing cables in trays or conduits?

• A. Use tape at arbitrary intervals.
• B. Use zip ties and loose clamps without regard to interval.
• C. Allow cables to move freely without securing.
• D. Use approved supports, clamps, or ties at proper intervals without crushing the cable.

Answer: (D)

Securing cables in trays or conduits is about providing firm, non-damaging support so cables can’t move, rub, or pull on terminations. The best practice is to use approved supports, clamps, or ties that are rated for the cable type and environment, and to fasten them at proper intervals according to code and manufacturer guidelines, ensuring you don’t crush or deform the cable jacket. This keeps the cables in place, protects insulation, and maintains heat dissipation. Tape at arbitrary spots, loose clamps with no interval, or allowing cables to move freely can lead to movement, abrasion, and damage over time, so those methods are not appropriate.

Securing cables in trays or conduits is about providing firm, non-damaging support so cables can’t move, rub, or pull on terminations. The best practice is to use approved supports, clamps, or ties that are rated for the cable type and environment, and to fasten them at proper intervals according to code and manufacturer guidelines, ensuring you don’t crush or deform the cable jacket. This keeps the cables in place, protects insulation, and maintains heat dissipation. Tape at arbitrary spots, loose clamps with no interval, or allowing cables to move freely can lead to movement, abrasion, and damage over time, so those methods are not appropriate.