Section 314.3 of the NEC® permits nonmetallic outlet and device boxes to be installed with which of the following?

Section 314.3 of the National Electrical Code (NEC) specifically addresses the installation practices and compatibility of outlet and device boxes. According to this section, nonmetallic outlet and device boxes are permitted to be used with nonmetallic sheathed cable. This compatibility is significant because nonmetallic sheathed cable is designed for residential and light commercial applications and features a durable yet lightweight design. It allows for ease of installation while ensuring safe electrical connection.

The use of nonmetallic boxes with nonmetallic sheathed cable helps maintain a unified system that is less prone to corrosion and other issues associated with moisture or harsh environments. Nonmetallic materials are generally preferred for indoor applications, where the risk of exposure to damage from elements is low, enhancing safety and longevity.

In contrast, other cable types listed would not align with the specifications for nonmetallic boxes as detailed in the NEC provisions. For instance, metallic sheathed cable, while used widely, is typically paired with metallic boxes to maximize grounding and bonding capabilities. Flexible cords and underground feeder cables each have specific applications and installation requirements that would not support the use of nonmetallic boxes. Each of these alternatives either requires different box materials for safety or does not have the same compatibility standards as non