Skip to main content
ElecToolsHQ

Generator Examples

These worked examples apply the generator sizing formula and the load and fuel consumption relationships used to plan and check generator capacity.

  1. Step 1

    A facility has a 40 kW total load and a 0.8 derating factor. Find the required generator size.

    Size = Load ÷ Derating Factor = 40 ÷ 0.8 = 50 kW

  2. Step 2

    A 50 kW generator is running at 75% load. Find the actual load.

    Load = Size × (Load % ÷ 100) = 50 × (75 ÷ 100) = 37.5 kW

  3. Step 3

    A generator is running a 37.5 kW load with a fuel rate of 0.08 gal/hr per kW. Find the fuel consumption.

    Fuel = Load × Rate = 37.5 × 0.08 = 3 gal/hr

Related