A motor control circuit is tapped from the load side of the motor short$-$circuit protective device. The control circuit conductors are $14$ AWG, the conductors require only short$-$circuit protection, and do not extend beyond the motor control equipment enclosure. The maximum overcurrent protection permitted for this motor control circuit is

$($a$)15$ A

$($b$)20$ A

$($c$)50$ A

$($d$)100$ A