For single phase motors, NEC table 430-148 gives 230 Vac full load current of 8 amps for a 1 HP motor. Note, that a 1 HP motor not fully loaded (good practice) will show current draw of less than 8 amps.
How do you calculate the starting current of a motor?
An induction motor, starting “across the line”, will typically have an instantaneous draw 6x the kw it is rated to run at. e.g. a 10 hp motor is rated at 7.46 kw, so on starting it may draw 75 kw. On 480 volts 3 phase, the amperage will be I = W / (E x 1.73) = 75,000 / (480 x 1.73) = 90.4 amps.
How much current does a 1 HP motor draw?
AMP DRAW BASED ON HORSEPOWER
|HP||1 Phase Amps|
|115 volt||230 volt|
What is the full load current of a 1 HP motor?
Full Load Current: Three Phase AC Motors
|Motor Horsepower||Motor Ampere|
|1||230V 460 V||4.2 2.1|
|1-1/2||230V 460V||6.0 3.0|
|2||230V 460V||6.8 3.4|
|3||230V 460V||9.6 4.8|
How many amps is 3 horsepower?
AC Motor Full Load Amperes
|HP||200 Volts||440-480 Volts|
How much current would a 1.5 HP 240v motor draw?
The 1.5 HP Baldor motor that turns at 1725 will draw 18 amps according to its name plate.
How many amps does a 1 HP pool pump draw?
1 HP is 746 watts x 1.5 HP = 1,119 watts. 1,119watts ÷ 120volts= 9.325 amps.
How many kW is a 5hp motor?
Hp to kW Conversion Table
|1 hp||0.745699872 kW||1 kW|
|5 hp||3.72849936 kW||4 kW|
|10 hp||7.45699872 kW||7 kW|
|15 hp||11.18549808 kW||11 kW|
How do I convert HP to amps?
How to use the hp to amps calculator?
- Estimate the power in watts (the nominator of the expression), 1 hp * 746 = 746 W ;
- Evaluate the product in the denominator, 200 V * 0.92 * 90% = 165.6 V . …
- Make a fraction of these numbers and find the final horsepower to amps value, 746 / 165.6 = 4.505 A .