Formulas

OHMS LAW
Ohms = volts/amperes (R = E/I)
Amperes = volts/ohms ( I = E/R)
Volts = amperes x ohms (E = IR)

POWER - AC Circuits
 

Efficiency =	746 x Output Horsepower
	Input Watts

 

Horsepower (3 Phase) =	Volts x Amps x 1.732 x Eff. x Power Factor
	746

 

Horsepower(1 Phase) =	Volts x Amps x Eff. x Power Factor
	746

MOTOR APPLICATION
 

Torque (lb-ft.) =	Horsepower x 5250
	RPM

 

Horsepower =	Torque (lb-ft.) x RPM
	5250

PUMP MOTOR APPLICATION
 
 

Horsepower =	GPM x Head in ft. x Specific Gravity
	3960 x Efficiency of Pump

 

Head in Feet =

2.31 x P.S.I.G.