How many Ampere of 1 horse power motor?
To determine the number of Amperes for a 1 horsepower (HP) motor, we need to consider both the efficiency of the motor and the voltage at which it operates. The formula to calculate Amperes (A) is:
A = (P / (η × V))
Where:
- P is the power in watts
- η is the efficiency (typically expressed as a decimal)
- V is the voltage in volts
Since we have the power in horsepower, we need to convert it to watts first. 1 HP is equal to approximately 746 watts.
Let's assume the efficiency of the motor is 0.85 (or 85%) and the voltage is 120 volts (standard residential voltage in the United States).
Converting 1 HP to watts:
P = 1 HP × 746 watts/HP = 746 watts
Now we can substitute the values into the formula:
A = (746 watts / (0.85 × 120 volts))
A = 6.157 Amperes (rounded to three decimal places)
Therefore, a 1 HP motor with an efficiency of 0.85 operating at 120 volts would draw approximately 6.157 Amperes of current.