True or False: Manufacturers may require that high-voltage portions for lighting enclosures be mounted in the upper right hand corner of an enclosure to conform with NEC requirements to keep low and high-voltage conductors separate.

• A. True
• B. Not sure
• C. Cannot be determined
• D. False

Answer: (A)

Keeping high- and low-voltage conductors separate inside enclosures is required by NEC to prevent arcing, insulation damage, and interference. To help meet this requirement, manufacturers often design enclosures so high-voltage portions are in a distinct area away from low-voltage circuits, sometimes using barriers or separate compartments. Placing high-voltage components in a specific location inside the enclosure, such as a designated corner, is a practical design choice that aids maintaining proper separation, simplifies wiring, and can improve cooling and serviceability. The NEC doesn’t mandate a fixed corner for all installations, but allowing or requiring a specific placement to ensure separation is consistent with NEC goals, so stating that manufacturers may require such mounting is true.