Supporting screws for nonmetallic boxes must be mounted ____ unless the box is constructed in a manner that prevents contact between the conductors in the box and the supporting screws.
A) with non-metallic sheaths
B) inside the box with bushings
C) outside of the box
D) with polymer braces

Question

Quizplus · Accepted Answer

Supporting screws for nonmetallic boxes must be mounted outside of the box unless the box is designed in a way that ensures the conductors inside the box cannot come into contact with the supporting screws. This is to prevent any potential damage to the conductors or insulation, which could lead to electrical faults or hazards.

Supporting Screws for Nonmetallic Boxes Must Be Mounted ____ Unless