To answer this question the pump's voltage is needed.
100 amps
It would depend on how deep your well is, and how efficient the pump.
A 1-HP motor is reckoned to draw 7 amps at 240 v single-phase. 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 the current in that case would be reckoned as 2 amps.
At peak power it should draw 1.36 amp at power factor 1 or more realistically 1.7 amp at power factor 1.7.
1 HP = 746 watts. Watts = amps x volts. 7 x 110 = 770 watts. 770/746 = 1.032 HP
100 amps
A single phase 10 HP motor will draw aproximately 50 amps. A three phase 10 HP motor will draw aproximately 28 amps.
To answer this question the voltage of the motor must be stated.
It depends on the voltage-- I think at 110v it's 4 amps per hp
24.87amps 1 hp=746 watts P=IxV ... (746x8)/240
It would depend on how deep your well is, and how efficient the pump.
HP = (Current x Voltage)/746, or HP = (IE)/746 (disregarding %Efficiency) So, you have to solve for I, current: I = (746 x HP)/E
1 HP = 745.70 wattsPower (watts) = Current (amps) x VoltsSo if you use a 110 volt system, amps = 745.7/110 = 6.779 ampsIf you use a 220 volt system, amps = 745.7/220 = 3.389 ampsFor a 12 volt system, amps = 745.7/12 = 62.142 amps
Look at the motor nameplate and it shoud have the amp draw on it. If the nameplate is missing, then the amp draw depends on what type of motor it is. The basic calculation to get you in the ball park would be as follows: 1 HP = 0.75 KW 7.5 HP = 5.63 KW Assume the efficiency of the motor is 80%, then the power supplied will need to be 5.63/0.8 = 7.04 KW amp draw = 7040/220 = 32 amps <<>> For calculation purposes the electrical code book states that a 7.5 HP motor draws 40 amps.
read the name plate on the motor
A 1-HP motor is reckoned to draw 7 amps at 240 v single-phase. 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 the current in that case would be reckoned as 2 amps.
To answer this question the voltage of the motor must be stated. I = W/E. 1 HP equals 746 watts.