What is the minimum bend radius for 1 in. diameter corrugated sheath MC cable?

The minimum bend radius for 1-inch diameter corrugated sheath MC (Metal-Clad) cable is 4 inches. This specification is crucial in electrical installation to ensure that the integrity of the cable is maintained and to prevent damage that can occur if the cable is bent too sharply. Bend radius is typically a multiple of the cable's diameter, and in the case of MC cable, the manufacturer provides guidelines that indicate that a bend should not be tighter than four times the outside diameter of the cable.

In this instance, for a 1-inch diameter cable, four times that diameter equals 4 inches, which aligns with industry standards and electrical codes. Maintaining this bend radius is essential not only for the durability of the cable but also for ensuring safety in the installation, preventing potential electrical failures, and reducing the risk of mechanical damage.