Generator Sizing Calculator Generator Sizing Calculator Generator Sizing Calculator Business or Residential: BusinessResidential How many Amps: 100200300 How many Volts: 120V240V480V What Phase: 123 Distance from Power Source (feet): Will you need spider box cables? Will you need a 3-phase power Distribution Panel? YesNo Will you need fuel delivered? NeverDailyWeekly Hours per day equipment will run: 8 Hours16 Hours24 Hours Calculate