Generator sizing

[cppoly]

Can anyone point me in the direction of a PDF or website for a guide to generator sizing?

In addition, any helpful tips? Such as simply just adding up all the loads won't work, etc.

 

[infinity]

If there is an ATS involved it would need to carry the entire calulated load or have load shedding capabilities.

 

[cppoly]

What about inrush from motor loads?

 

[ron]

All generator manufacturers have sizing calculation support either from charts or software.

For example here is for small gens http://powerequipment.honda.com/generators/wattage-calculator

Bigger systems have calculators that you would need to get authorization from a vendor such as https://specsizer.cat.com/ https://www.youtube.com/watch?v=uEQvxY4gloA

 

[Abdel Rahman Mohamed]

In Mega projects fire pump load is too much that's why we are not considering its load while making generator sizing.