What is used to make a slight change in elevation in a cable tray system?

• A. Riser clamps
• B. Hangers
• C. Swivel plates
• D. Spacers

Answer: (C)

Swivel plates are the adjustable interface used to fine-tune the height of a cable tray at a support point. They let you rotate or tilt the plate to add or subtract a small amount of elevation, so the tray remains level and the sections line up smoothly even if the supports aren’t exactly at the same height or the run has slight irregularities. Riser clamps fix the tray to vertical risers, hangers simply suspend the tray, and spacers maintain spacing or clearance; none of these provide the controlled, small elevation adjustment that swivel plates offer. So for making a slight change in elevation, the swivel plate is the best choice.