How many amps does a 3/4 hp motor draw at 120 volts?
AC Motor Full Load Amperes
| HP | 110-120 Volts | |
|---|---|---|
| 1/2 | 9.8 | 4.9 |
| 3/4 | 13.8 | 6.9 |
| 1 | 16 | 8 |
| 1.5 | 20 | 10 |
How many amps does a 3 HP motor draw?
Here are the Full Load Amp (FLA) values for typical 230VAC and 480VAC 3 phase motors.
| Motor horsepower | Full load amps 230VAC | Full load amps 460VAC |
|---|---|---|
| 1.5 | 4.7 | 2.4 |
| 2 | 6 | 3.0 |
| 3 | 9 | 4.5 |
| 5 | 15 | 7.5 |
How do you calculate amps on a motor?
Given horsepower and volts, it is possible to calculate amps. The calculation of amps uses Ohm’s Law, which is amps times volts equals watts. Multiply the horsepower by 746 watts. For example, an engine at two horsepower with 230 volts would be calculated as two horsepower times 746 watts, which equals 1492.
What size breaker do I need for a 3 HP motor?
What size breaker do I need for a 3 HP motor? A 20 amp breaker is all you’d ever need for a 220v 3HP motor. It wouldn’t hurt anything to run 30amp circuits if you so choose, but it’s overkill.
How do you calculate full load amps on a 3 phase motor?
For three-phase, full load current for the resistive load is equal to the three-phase power divided by 1.732 times of voltage. Here power factor will be unity for resistive loads. Full load current I, I =P.
Can I use 12 gauge wire on a 30 amp breaker?
If you look in the code book, 12 AWG wire is legal to 30 amps if you can run it at 90 degrees C.
How do you calculate amps from HP?
HP to Amps formula is used to calculate current from horsepower in single and three phase ac circuits as well as in DC circuits. The basic formulas for the calculations are: Formula: 3 phase Amps = [HP * 746] / [E * % Efficiency * PF * 1.73]
How many amps per hp?
1 horsepower = 745.699872 Watts (Google horsepower to obtain this number) The formula is P=VI, or Power = Voltage x current. This becomes P / V = A, or Power divided by voltage equals current. At 120 volts, 745.699872 Watts / 120 volts equals 6.214 amps. At 240 volts, 745.699872 Watts / 240 volts = 3.107 amps.
How do you convert amps to horsepower?
How to Convert Amps to Horsepower. The conversion from amps, a measure of electric current, to horsepower, a measure of power output by a motor, can be done using a fairly simple formula. Horsepower = (Amps × Volts × Efficiency) ÷ 746.
What is 3 phase amps?
3 Phase means there are three phases 120 degree apart from each other for transmitting or distributing power, 200 amps means each phase has a current capacity of 200 amps under normal condition, beyond 200 amps the 3 phase line will be over loaded and have a poor voltage regulation.
