Cables with entirely nonmetallic sheaths can enter a surface-mounted enclosure through nonflexible raceways. What is the maximum length allowed for such raceways?

The maximum length allowed for nonflexible raceways through which cables with entirely nonmetallic sheaths can enter a surface-mounted enclosure is 10 feet. This specification ensures that the nonmetallic sheathed cables are adequately protected while maintaining compliance with electrical codes.

Nonmetallic sheathed cables are commonly used in residential wiring because they are lightweight and easy to install, but they must still adhere to safety regulations when interfacing with different systems such as enclosures. The limitation of 10 feet for the nonflexible raceway assists in minimizing potential risks, like damage to the cables and issues related to the bending radius, which could affect the cable's performance and safety.

Understanding this requirement helps ensure that electrical installations are both safe and up to code, which is essential for both the installer and the homeowner.