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Conversion Formula:
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The HP to Watts conversion calculates electrical power in watts from mechanical power in horsepower. This conversion is essential for electrical engineering applications where motor power ratings need to be converted between different unit systems.
The calculator uses the conversion formula:
Where:
Explanation: This conversion is phase-independent and provides a straightforward unit conversion from mechanical horsepower to electrical watts.
Details: Accurate power conversion is crucial for electrical system design, motor selection, energy efficiency calculations, and proper equipment sizing in industrial and commercial applications.
Tips: Enter horsepower value (must be greater than 0). The calculator will automatically convert to watts using the standard conversion factor of 746 watts per horsepower.
Q1: Why is the conversion factor 746?
A: 1 mechanical horsepower is defined as exactly 745.699872 watts, which is commonly rounded to 746 watts for practical calculations.
Q2: Is this conversion different for 3-phase systems?
A: No, the conversion from HP to watts is the same regardless of phase. The conversion is purely a unit conversion and doesn't depend on electrical phase.
Q3: What's the difference between mechanical and electrical horsepower?
A: Mechanical horsepower (HP) is used for mechanical power, while electrical horsepower is sometimes used for electrical motors. This calculator uses the standard mechanical horsepower conversion.
Q4: Can I use this for metric horsepower?
A: No, this calculator uses the imperial horsepower unit. Metric horsepower (PS) uses a different conversion factor (1 PS = 735.5 watts).
Q5: How accurate is this conversion?
A: The conversion is mathematically exact based on the defined relationship between horsepower and watts. For most engineering purposes, the rounded value of 746 provides sufficient accuracy.