For a 15 KW furnace on a 240 V system, what will be the approximate electric load?

To determine the approximate electric load for a 15 KW furnace operating on a 240 V system, we can use the formula for calculating electric power:

Power (in watts) = Voltage (in volts) x Current (in amps).

Rearranging this formula gives us:

Current (in amps) = Power (in watts) / Voltage (in volts).

For this specific case, you'll convert kilowatts to watts to use in the formula, so 15 kilowatts is 15,000 watts. Plugging the values into the equation gives:

Current = 15,000 watts / 240 volts = 62.5 amps.

This calculation shows that the approximate electric load is around 63 amps. This value aligns with the choice provided, which confirms it as the correct answer. Understanding the relationship between power, voltage, and current is crucial for accurately sizing electrical components for any electrical system, including furnaces. Using this formula is essential in practical scenarios to prevent overloading circuits and ensure safety and efficiency in electrical installations.