How many watts are equivalent to 1 horsepower (HP)?

One horsepower is equivalent to 746 watts. This conversion is based on the definition of horsepower, which originates from the early calculations made by James Watt regarding the power of steam engines. The figure 746 watts is derived from the fact that one horsepower was defined as the ability to perform work at a rate equivalent to 550 foot-pounds per second, which translates mathematically to approximately 746 watts.

In electrical terms, knowing this conversion is important, especially in scenarios where engines and electric motors are compared or when determining the power output of various systems. Thus, understanding that 1 HP equals 746 watts is essential for electrical apprentices, as it helps in their calculations and understanding of power requirements across different applications. This knowledge is widely accepted in both mechanical and electrical engineering disciplines.