Common calculation formulas for general power factor

• k=1000
• W=Watts
• Eff= Motor efficiency 
• V=Volts
• A=Amperes
• hp=Horse Power
• PF=Power Factor
• I=Wire Current(A)
• Ic=Capacitor Current(A)
• C=Capacitance(µF)
• f=Frequency(Hz)
• Xc=Capacitive reactance

References 

1.  Electrical Engineers 57, pp. 133, (Journal of the National Federation of Electrical Engineers Associations of the Republic of China)
2. Yan Shixiong, “Electricity Harmonic Countermeasures”, pp.95, (Industrial Development Bureau, Ministry of Economic Affairs, 1984, Industrial Technology Talent Training Program Lecture Notes)
3. Electrical Engineers 63, pp. 133, (Journal of the National Federation of Electrical Engineers Associations of the Republic of China)
4. Japan "Shinden", September 1994, pp. 49-56
5. Japan "New Electric" Vol. 40 No. 15, pp. 55-56