What is the required service demand load in kW for an apartment complex with ten 15 kW ranges, ten 13 kW ranges, ten 11 kW ranges, and ten 9 kW ranges?

To determine the required service demand load in kW for the apartment complex, we need to consider the appliance loads collectively and apply the appropriate demand factors for ranges.

The apartment complex consists of:

• Ten 15 kW ranges

• Ten 13 kW ranges

• Ten 11 kW ranges

• Ten 9 kW ranges

Calculating the total kW for each type of range:

• For the 15 kW ranges: 10 ranges × 15 kW = 150 kW

• For the 13 kW ranges: 10 ranges × 13 kW = 130 kW

• For the 11 kW ranges: 10 ranges × 11 kW = 110 kW

• For the 9 kW ranges: 10 ranges × 9 kW = 90 kW

Next, we total these loads:

150 kW + 130 kW + 110 kW + 90 kW = 480 kW

In practice, the demand for ranges often allows for a diversity factor since it is unlikely that all ranges will operate at their maximum load simultaneously. Typically, the National Electrical Code (NEC) provides a demand factor for cooking appliances