Question

A 16-unit multifamily dwelling has two fixed 120-volt appliances installed in each of its 16 units. The two appliances installed in each unit are one 1. 3 kw dishwasher and one 5. 5-ampere disposal. What is the feeder demand, in volt-amperes, for the line (and neutral) for the appliances for the apartment complex? round the answer to the nearest whole number

Answer 1

Okay, let's solve this step-by-step:

* We have 2 appliances in each of the 16 units

* The dishwasher is 1.3 kW, which is equivalent to 1.3*1000/120 = ~11 amps

* The disposal is 5.5 amps

* So for each unit, we have 11 + 5.5 = 16.5 amps

* For all 16 units, the total amps will be 16.5 * 16 = 264 amps

* Since V=VA/A, VA = V*A, and V is 120, VA = 120*264 = 31,680 volt-amperes

Therefore, the feeder demand, in volt-amperes, for the line (and neutral) for the appliances for the apartment complex will be 31,700 volt-amperes, rounded to the nearest whole number.