Is an insulating bushing required between the conductors and armor of Type AC cable at termination points?

An insulating bushing is indeed required between the conductors and the armor of Type AC cable at termination points. This requirement is in place to ensure safety and prevent potential electrical issues. The insulating bushing acts as a protective barrier that helps to prevent the conductors from coming into direct contact with the metal armor of the cable. Such contact could create a risk of short circuits or electrical faults due to the conductive nature of the armor, especially in environments where moisture or other conductive materials might be present.

Using an insulating bushing also aids in securing the cable and reducing wear on the conductors inside the armor. The bushing absorbs mechanical stresses and serves to provide a smooth transition point, thus preventing damage to the insulation of the conductors. These safety measures are critical components of electrical installation practices, ensuring compliance with relevant codes and enhancing the overall integrity of the electrical system.