Question

Where a main bonding jumper is required by the NEC, the jumper cannot be less than what percentage of the area of the largest phase conductor?

a) 10%
b) 25%
c) 50%
d) 75%

Answer 1

The main bonding jumper must be at least 100% of the area of the largest phase conductor, not 10%, 25%, 50%, or 75% as mentioned in the options. The correct size ensures electrical continuity and safety.

Step-by-step explanation:

Where a main bonding jumper is required by the NEC, the jumper cannot be less than 100% of the area of the largest phase conductor.

The options provided in the question do not include the correct answer; therefore, the correct answer is none of the given choices.

The main bonding jumper is a key component in providing a path for electrical continuity and grounding in electrical systems and must meet the size requirements specified by the National Electrical Code (NEC) to ensure safety and proper functioning.