Final answer:
The largest overcurrent protection for a branch circuit that supplies a non motor operated utilization equipment in an occupancy would be 25 amps.
Step-by-step explanation:
The largest overcurrent protection for a branch circuit that supplies a non motor operated utilization equipment in an occupancy would be determined based on the rated current of the utilization equipment.
In this case, the utilization equipment has a rating of 20 amps. According to safety regulations, continuous use is limited to 80% of the breaker current capacity. Therefore, the maximum overcurrent protection for this branch circuit would be:
20 amps / 0.8 = 25 amps
So, the largest overcurrent protection for the branch circuit would be 25 amps.