Limited to a single set of NC control-relay contacts, running overload protection possesses a problem with a reversing motor-starter simply because the reversing circuit consists of only one other 3-pole power contactor.
The single set NC overload-relay contacts must be wired in series with both directional power-contactor solenoids to provide overload-overcurrent protection for the electric motor in either direction of rotation.
If the control circuit is , the, the common side of the two directional power-contactor solenoids must be parallel-connected to the common circuit conductor.
The single set of NC overload-relay contacts must be placed in series with the stop section of the control circuit for the reversing electromagnetic motor starter ___________ the split for the two separate directional start circuits.
A) ungrounded; before
B) grounded; after
C) ungrounded; after
D) grounded; before
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