Given: A 2″ conduit contains only one branch circuit that consists of three size 10 AWG, copper, type THW conductors. What is the maximum allowable overcurrent protection that may be used on the ungrounded conductors in this circuit?

Given: A 2″ conduit contains only one branch circuit that consists of three size 10 AWG, copper, type THW conductors. What is the maximum allowable overcurrent protection that may be used on the ungrounded conductors in this circuit?