What is the minimum size wire permitted for tap conductors between Pull Box 2 and FD #1?

To determine the minimum size wire permitted for tap conductors between Pull Box 2 and FD #1, it's essential to consider the National Electrical Code (NEC) guidelines that apply to tap conductors.

In general, tap conductors are those that connect between a distribution point, like a pull box or junction box, and a final utilization point, where the load is connected. The NEC outlines specific requirements for the minimum size of tap conductors based on the amount of current they are expected to carry and the type of system in use.

The requirement for tap conductors typically involves ensuring that they have an adequate size to handle the load without overheating or becoming a safety hazard. In this case, given that B (3 AWG) is the selected answer, the minimum size of 3 AWG is often based on load calculations and the allowable ampacity for the specific wire type (copper or aluminum) and the environment where it will be installed.

When discussing the choices available, it can be noted that going below this recommended size, such as with 2 AWG, 4 AWG, or 5 AWG, would not meet the necessary guidelines for safely managing the expected electrical load, and therefore, would not be compliant with