To ensure proper installation, cable sheath must extend beyond any cable clamp by at least:

To ensure proper installation, it is essential that the cable sheath extends beyond any cable clamp by at least 1/4 inch. This requirement is in place to provide adequate support for the cable while preventing damage to the conductors within. When the sheath extends an appropriate distance beyond the clamp, it helps to protect the conductors from stress and strain that may occur due to movements or vibrations in the electrical system.

Extending the sheath beyond the clamp also provides a buffer zone that can aid in preventing moisture intrusion and potential electrical shorts, which can occur if the conductors are exposed. The 1/4-inch extension is sufficient to achieve these protective purposes without excess sheath resulting in unnecessary bulk or difficulty in securing the cable neatly and tidily in the installation process.

Adhering to this minimum requirement is an essential practice to ensure the safety and functionality of electrical installations.