HP = (Current x Voltage)/746, or HP = (IE)/746 (disregarding %Efficiency)
So, you have to solve for I, current:
I = (746 x HP)/E
There are 0.075 amps in 75 milliamps.
It's 75/120 and the answer is in amps.
The answer is that it depends upon the a. efficiency (to determine its input power). b. supply voltage. c. nature of the supply (single-phase, three-phase, d.c., etc.)
Read the specification plate on the motor to determine the amount of current that the motor uses, as well as the voltage and phase. Most likely, it will be a 3 phase motor, so you can't simply connect it to your house wiring, but without sufficient information, it is impossible to tell you all of the specifics. <<>> The code book rates the amperage of a three phase 40 HP motor by different voltages. at 200 volts - 120 amps, 230 volts - 104 amps, 460 volts - 52 amps and 575 volts - 52 amps. A breaker for a motor has to be sized to 250% of the motors full load amps. Also the wire size for a motor has to be 125% of the motor full load amps.
Amps = Watts / (Volts x Power Factor). Now a hair dryer has a motor and a resistive heater so if we assume a PF = .8 the answer is: 1500 / 20 = 75 amps. Since it is unlikely that you have a 75 amp hair dryer you must mean 125 volts. The answer for that would be 1500 / 100 = 15 amps which is still high, but believable. If we assume a Power Factor of 1 and ignore the motor contribution to Power Factor we have 1500 / 125 = 12 amps.
cable size for 90 amps 3 phase 440 v <<>> A #3 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 100 and 105 amps respectively. If this feeder is for a motor connection the wire size has to be increased to 125% of the full load amps of the motor.
Watts = Amps x Volts x Power Factor For a motor the Power Factor is less than 1 and might typically be about .75. For a resistive load like a toaster PF = 1. If you know the Voltage and PF and know the wattage you can calculate amps. Amps = Watts / (Volts x PF)
.625 ampsI know you said 110v but most homes will be 120volt ...well near itwatts divided by volts equals amps
Aluminum 4/0 wire car carry 180 amps at at 75 degrees Fahrenheit or 205 amps at 90 degrees. .
75 kw motor
Typically 75 amps on natural gas, 85 amps using propane. Peak amps(for less than a second) to start a big appliance, like an A/C condenser, are 130.
You have to wire both the run and start windings. The start windings will automatically be removed from the circuit once the motor is at 75% of normal speed. The start winding gives you more torque to start the motor.