What size breaker do I need for a 25 hp motor?
Full Load Current: Three Phase AC Motors
| Motor Horsepower | Size Breaker | |
|---|---|---|
| 10 | 230V 460V | 50 30 |
| 15 | 230V 460V | 70 40 |
| 20 | 230V 460V | 100 50 |
| 25 | 230V 460V | 100 50 |
How do I convert HP to amps?
How to Convert Horsepower to Amps
- Amps = (Horsepower × 746) ÷ Efficiency ÷ Volts.
- Watts = Horsepower × 746.
- Watts = Wattsη
- Amps = Watts ÷ Volts.
- Amps = HP × 746V × η × PF.
What size breaker do I need for a 30 hp motor?
Full-Load Current and Circuit Protection Data for Three-Phase AC Motors
| Motor Horsepower | Breaker Size | |
|---|---|---|
| 20 | 230 V 460 V | 100 50 |
| 25 | 230 V 460 V | 100 50 |
| 30 | 230 V 460 V | 125 70 |
| 40 | 230 V 460 V | 175 100 |
How much does it cost to run a 25 hp motor?
25 horsepower is about 18.6 KW, so that’d be $1.49 an hour. Your mileage may vary.
How many amps does a 20 hp motor draw?
AC Motor Full Load Amperes
| HP | 200 Volts | 208 Volts |
|---|---|---|
| 20 | 62.1 | 59.4 |
| 25 | 78.2 | 74.8 |
| 30 | 92 | 88 |
| 40 | 120 | 114 |
How many amps can a 20-amp breaker handle?
The standard for most household circuits are rated either 15 amps or 20 amps. An important note to remember is that circuit breakers can only handle about 80% of their overall amperage. That means a 15-amp circuit breaker can handle around 12-amps and a 20-amp circuit breaker can handle about 16 amps.
How many HP is 15 amps?
Common Amps to Horsepower Conversions
| Amps | Horsepower | Efficiency |
|---|---|---|
| 15 A | 2.17 HP | 90% |
| 20 A | 2.9 HP | 90% |
| 25 A | 3.62 HP | 90% |
| 30 A | 4.34 HP | 90% |
How many amps does a 1.5 HP 220v motor draw?
The 1.5 HP Baldor motor that turns at 1725 will draw 18 amps according to its name plate.
How do I tell what AMP my engine is?
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 wire do you use for 20 amps?
A 20-amp circuit, protected by a 20-amp breaker or fuse, must be served by 12-gauge or 10-gauge wire.
What wire do I use for 40 amps?
For a maximum of 40 amps, you’ll need a wire gauge of 8.
What size breaker do I need for a 15 amp motor?
A 12 wire and a 20A breaker is needed. 15A ends can be used on 20A circuits.
How many amps does a 30 hp motor draw?
AMP DRAW BASED ON HORSEPOWER
| HP | 1 Phase Amps | 3 Phase Amps |
|---|---|---|
| 115 volt | 208 volt | |
| 20 | — | 59.4 |
| 25 | — | 74.8 |
| 30 | — | 88 |
How do you calculate amps from electricity?
To calculate the operating cost of an electric motor use the following formula: Amps x volts (115 or 230 volts) = watts x hours per day of operation ÷ 1000 x cost per kilowatt hour. For example: Say you are looking at one of our aerators and you read that it draws 1 amp of electricity and it uses 115 volts.
How many amps does a 20 HP 3 phase motor draw?
AC Motor Full Load Amperes
| HP | 200 Volts | 208 Volts |
|---|---|---|
| 20 | 62.1 | 59.4 |
| 25 | 78.2 | 74.8 |
| 30 | 92 | 88 |
| 40 | 120 | 114 |