What is the feeder demand load for four 14kW residential ranges?

To determine the feeder demand load for four 14 kW residential ranges, we can utilize the National Electrical Code (NEC) demand factors for household cooking equipment. Typically, for calculating the feeder demand load, the NEC provides specific demand factors that apply when multiple cooking appliances are installed.

When dealing with ranges, the demand is not simply additive because of the maximum probable simultaneous usage. The NEC specifies that when calculating the load for residential ranges, the first range is counted at its full load; subsequent ranges can use a reduced demand factor as not all will typically be used at maximum capacity at the same time.

The calculation generally follows these guidelines:

• The first range: 14 kW

• The second range: 14 kW (but at reduced demand)

• The third range: reduced demand

• The fourth range: reduced demand

Specifically, if we take into account the common demand factors as per NEC, the demand for ranges can commonly total around 16.7 kW when applying adjustment factors (where the full load of the first units is included, and the subsequent units are down-rated).

Thus, in this scenario, applying the demand factors to four 14 kW residential ranges leads us to the conclusion that the feeder demand