A 208Y/120 V panelboard for an office building has the following loads:

• Receptacles with a total load of 30.00 kVA at PF = 0.90

• Lighting with a total load of 20.00 kVA at PF = 0.95

• One motor with a load of 5 kVA at PF = 0.92

• Heaters with a total load 12.00 kVA at PF = 1.00 Determine the size of the THW-feeder for the panelboard. Size the conduit.

1. Select a proper circuit breaker for the panelboard. The motor is protected by a circuit breaker with an inverse time-delay element.

2. Size the equipment grounding conductor (Cu) for the panelboard.