Which of the following statements about the protection of nonmetallic sheathed cable from physical damage is correct?

The correct option indicates that both statements I and II about the protection of nonmetallic sheathed cable from physical damage are accurate. Nonmetallic sheathed cable, often known as NM cable or Romex, is widely used in residential wiring due to its flexibility and ease of installation. However, it is also susceptible to physical damage, prompting the need for appropriate protective measures.

Typically, the National Electrical Code (NEC) outlines specific requirements for installing nonmetallic sheathed cable, particularly when it is exposed to potential damage. This includes guidelines for installing cables in areas where they may be subject to impact or unnecessary strain, such as in unfinished basements, attics, or exposed locations. Furthermore, using protective coverings or raceways are additional measures encouraged by the code to enhance safety and ensure compliance.

The significance of understanding protection measures for nonmetallic sheathed cable lies in preventing damage that could lead to electrical hazards such as short circuits or fire. Both statements provide insight into the necessary precautions to mitigate these risks, and thus their correctness reinforces the importance of proper installation practices in electrical work.