Question

For straight pulls, the length of a pull box shall not be less than ____ the outside diameter, over the sheath, of the largest shielded or lead covered conductors or cable entering the box on system over 600V

a. 3-4 times
b. 8 times
c. 4 times
d. 40 times

Answer 1

The length of a pull box for straight pulls must be at least 8 times the outside diameter of the largest shielded or lead-covered conductor or cable entering the box on systems over 600 volts.

Step-by-step explanation:

The question is related to the specifications of a pull box used in electrical systems for the pulling of cables, specifically those systems over 600 volts. The correct size of a pull box for straight pulls is determined by the outside diameter of the largest cable entering the box. According to the National Electrical Code (NEC), the length of a pull box should be at least eight times the outside diameter, over the sheath, of the largest shielded or lead-covered conductor or cable entering the box on systems over 600 volts. Therefore, the answer to the question is (b) 8 times.