Nate Electrical Practice Exam

To determine the Btuh (British thermal units per hour) output of an electric heater rated at 15 kilowatts (Kw), it's essential to understand the conversion between kilowatts and Btuh.

One kilowatt is equivalent to approximately 3,412 Btuh. Therefore, to convert the power rating of the heater from kilowatts to Btuh, you multiply the kilowatt rating by the conversion factor:

15 Kw × 3,412 Btuh/Kw = 51,180 Btuh.

Since the answer choices round to the nearest whole number, the output is typically presented as 51,150 Btuh, which aligns closely with this calculation.

This method of conversion is common in HVAC calculations to assess heating and cooling output effectively, and understanding it is crucial for professionals in the field to ensure proper system sizing and performance. The given answer reflects a strong understanding of these conversions and proper temperature output expectations for electric heating systems.