horsepower-hour

American  

[hawrs-pou-er-ou^uhr, -ou-er] / ˈhɔrsˌpaʊ ərˌaʊər, -ˌaʊ ər /

noun

1. a foot-pound-second unit of energy or work, equal to the work done by a mechanism with a power output of one horsepower over a period of one hour.

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horsepower-hour British  

noun

1. an fps unit of work or energy equal to the work done by 1 horsepower in 1 hour. 1 horsepower-hour is equivalent to 2.686 × 10 ⁶ joules

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Etymology

Origin of horsepower-hour

First recorded in 1895–1900

Example Sentences

As a matter of fact, there is less heat to be had in thermal units from a horsepower-hour of electricity than from three ounces of coal.

From Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine by Anderson, Frederick Irving