For 350 kcmil conductors with non-removable lugs in Figure 210.6, what is the minimum required wire bending space at II?

The correct answer reflects the National Electrical Code (NEC) requirements for wire bending space, which are crucial for ensuring safe and effective installation of electrical conductors. For 350 kcmil conductors with non-removable lugs, the NEC stipulates specific dimensions for the bending space required.

In this instance, the minimum required bending space is set at 12 inches. This is designed to accommodate the necessary bending radius of larger conductors, which helps to prevent damage to the wire insulation and maintain electrical integrity. Providing adequate bending space is essential not only for compliance with code but also for the reliable performance of the electrical system.

It's important for installers to adhere to these requirements to mitigate risks associated with tight bends in conductors, which can lead to overheating, increased resistance, and failure of the conductor itself. Properly calculating and providing the right amount of bending space is thus a critical aspect of electrical installation practices.