Direct-buried conductors subject to frost movement shall be arranged to prevent damage to the enclosed conductors or to equipment connected to the raceways. Which option best matches this requirement?

• A. Enclosed conductors
• B. Insulation
• C. Joints
• D. Terminals

Answer: (A)

Frost movement can shift soil and crush or yank direct-buried cables, so the protection focuses on keeping the conductors inside a sturdy protective path. Placing the conductors in a raceway or other enclosure provides mechanical protection from soil movement and keeps any splices or equipment connections safely contained within that protective channel. Insulation does not stop physical displacement, and joints or terminals alone do not offer the protective path needed against frost heave. So enclosing the conductors in a raceway best satisfies the requirement to prevent damage caused by frost movement.