Chapter 2.1, Problem 20R

a.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the $4\text{in}\text{.}\times 1\frac{1}{2}\text{in}\text{.}$ octagon box.

b.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the $4\frac{11}{16}\text{in}\text{.}\times 1\frac{1}{2}\text{in}\text{.}$ square box.

c.

To determine

Find the maximum possible number of 12 AWG conductors permitted in the $4\text{in}\text{.}\times 2\text{in}\text{.}\times 3\frac{1}{2}\text{in}\text{.}$ device box.