What size breaker do I need for a 60 hp motor?
Full-Load Current and Circuit Protection Data for Three-Phase AC Motors
| Motor Horsepower | Breaker Size | |
|---|---|---|
| 60 | 230 V 460 V | 250 200 |
| 75 | 230 V 460 V | 300 200 |
| 100 | 230 V 460 V | 400 200 |
| 125 | 230 V 460 V | 500 250 |
How many amps does a 50 hp motor draw?
AMP DRAW BASED ON HORSEPOWER
| HP | 1 Phase Amps | 3 Phase Amps |
|---|---|---|
| 115 volt | 208 volt | |
| 30 | — | 88 |
| 40 | — | 114 |
| 50 | — | 143 |
How do I know how many amps my 3 phase motor is?
Divide the power consumption in watts by the line voltage multiplied by the power factor to find the amperage. For three phase circuits the power factor is the square root of 3. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3.
How many amps does a 60 hp motor draw?
AC Motor Full Load Amperes
| HP | 200 Volts | 550-600 Volts |
|---|---|---|
| 40 | 120 | 41 |
| 50 | 150 | 52 |
| 60 | 177 | 62 |
| 75 | 221 | 77 |
How much current does a 3 phase motor draw?
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 does a 5 HP 3 phase motor draw?
The tables below are intended to be a general guide for AC motor Full Load Amperes. Always use the F.L.A….AC Motor Full Load Amperes.
| HP | 110-120 Volts | |
|---|---|---|
| 3 | 34 | 17 |
| 5 | 56 | 28 |
| 7.5 | 80 | 40 |
| 10 | 100 | 50 |
How many amps does a 7.5 kW 3-phase motor draw?
Three Phase Motors
| MOTOR RATING | HP | APPROX. F.L.C. AT LINE VOLTAGE |
|---|---|---|
| 5.5 kW | 7.5 | 20 |
| 7.5 kW | 10 | 27 |
| 9.3 kW | 12.5 | 34 |
| 10 kW | 13.5 | 37 |
What is the 1.73 in 3-phase?
In a 3-phase system the voltage between any two phases is 3 times higher than the voltage of an individual phase by a factor of 1.73 (square root of 3 to be exact). A 220V system with three 220V phases has a 220 * 1.73 = 380V cross-phase voltage.
How to calculate the 3 phase amps of a motor?
Mathematical equation: Three phase Amps = [HP * 746] / [E * %age Efficiency * PF * 1.73] Example: 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. Solution: Current = [2 * 746] / [400 * 0.93 * 0.9 * 1.732] = 2.57 Amps
How to convert hp to AMP in 3 phases?
How to convert Hp to Amp AC 3 phases in only 3 step: Step 1: Multiply Hp (Horsepower) by 746. Example, if you have 100 hp multiply by 746 and you get 74600. (100Hpx746 = 74600).
How many amps does a 5 hp motor take?
Also 5 HP three-phase motor takes 6.4 Amps. In practically the current rating may change and which is based in the manufactured standard as well as the what grade copper they are using to winding the motor. i.e motor copper grade’s quality will be grade1 > grade 2 > grade 3 7.5 Hp 3-phase motor takes 9.7 Amps, 10 HP, 3 phase motor takes 13 Amps
What is the formula for HP to amps?
Hp to Amps calculation formula, DC, AC, 3 phase, 2 phase, 1 phase: IDC=Direct current. IAC1Ø=Current/Ampere 1 phase. IAC2Ø=Current/Ampere 2 phase. IAC3Ø=Current/Ampere 3 phase. H.P=Horsepower. VDC=Voltage direct current.