This calculator is commonly used for load listing, load calculations and generator size selection.

### Values used in calculations

Ratio between Absorbed Power and Rated Power

 Load Factor Motors between: 0kW – 15 kW 0.7 Motors between: 15kW – 45 kW 0.75 Motors between: 45kW – 150 kW 0.83 Motors larger than 150 kW 0.85

#### Efficiency

Percentage between Output Power and Input Power

 Efficiency Motors between: 0kW – 15 kW 0.85 Motors between: 15kW – 45 kW 0.89 Motors between: 45kW – 150 kW 0.91 Motors larger than 150 kW 0.94

#### Power Factor

Ratio between Active Power and Total Power

 Power Factor Motors between: 0kW – 15 kW 0.75 Motors between: 15kW – 45 kW 0.8 Motors between: 45kW – 150 kW 0.82 Motors larger than 150 kW 0.91

### Calculations:

• KW Consumed by a Motor = Absorbed Power x Efficiency x Power Factor
• KVAR consumed by a Motor = KW x tan (cos-1(p.f))
• KVA consumed by a motor = (KW2+ KVA2)1/2
• Multiplication Factor for Continuous Load = 100%
• Multiplication Factor for Intermittent Load = 50%
• Multiplication Factor for Stand by Load = 10%