Generators

http://www.dieselserviceandsupply.com/Prime_vs._Standby_Power.aspx

Any use ?

Any generator, no matter what the rating, can be used in any of the modes stated, but the allowable load must be adjusted to compensate for the usage. For instance, most generator manufacturers will quote the "standby" rating because that makes the generator sound bigger. You have to dig in to the manufacturer's literature to find out how to "de-rate" for different service conditions. My experience is that most manufacturers have their own way of doing this, and it is best to follow the manufacturer's recommendations.

Prime - The Generator, you can use as prime power generator, i.e, U can use 100% load at any no. of hours

Continuous- Designed for 80% load for any no. of hours.

Standby- It can be used for 100% otr below load for 12 Hours continuosly