The are only intended to be guidelines and in all cases the full load amps of the motor nameplate should be used for final calculations.
10 hp electric motor 3 phase amp draw.
Always use the f l a.
Written on the motor nameplate first if it is available.
230 volts motor single phase.
V l n voltage line to neutral.
3 phase ac motor f l a.
Determine the current flowing through a three phase 2 hp 400 volt motor having an efficiency rating of 93 and a power factor of 0 9.
The same power of motor would draw 3 5 amps at 480 v single phase but a 480 v supply could most likely be a three phase suppy and.
I ac2ø current ampere 2 phase.
A 1 hp motor is reckoned to draw 7 amps at 240 v single phase.
For example if there are three 15 amp motors in the circuit the ampacity rating of the wire feeding the.
Multiply hp horsepower by 746.
The first step to convert hp to amps is convert hp to watts.
Example if you have 100 hp multiply by 746.
This calculator will also give you motor amps and recommended breaker size starter size heater size and conduit size.
115 volts motor single phase.
Motors ac vfd drive 3 phase power training about 90 marketing may 17 2020.
I ac3ø current ampere 3 phase.
1 1 2 3 5 7 10 15 20 25 30 40 50 60 75 100 125 150.
As a rules of thumb amps horsepower rating can be estimated to.
Always check nameplate information before designing protective devices wiring and switch gear.
Three phase amps hp 746 e age efficiency pf 1 73 example.
Enter the motor horsepower and voltage.
Since 1 hp is equal to 746 w simply multiply the horsepower by 746 for this conversion.
Branch circuits that contain two or more motors must have wire in which the ampacity rating of the wire must be at least 125 of the full load current of the largest motor plus the sum of full load currents for the rest of the motors.
How to convert hp to amp ac 3 phases in only 3 step.
460 volts motor 3 phase.
V dc voltage direct current.
230 volts motor 3 phase.
The tables below are intended to be a general guide for ac motor full load amperes.
Watts horsepower 746.