A standby generator will provide backup power in the event of an electrical outage. You can get one that is fueled by diesel or kerosene and install it in your basement or backyard.
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Home Depot will install a generator for you. However, you just need to purchase it and get it home. They have a truck you can rent by the hour to get it home. Then, people will come to your house and install it for you.
In my opinion you should probably buy your home standby generator new and not used. You can shop for your home standby generator at sears or sears.ca.
The difference b/w the prime generator & standby generator is that the prime generator is used for 24/7/365, while the standby generators are only used in emergency cases, if we used standby generators for more than 24 hours continuously, then it will be overheated for sure.
You would use a standby generator as a back up electricity source when there are outages of electric power. Business such as factories and also offices would have a standby generator in place.
When turning a generator to a standby operations mode, there is often a switch on the generator. By turning the switch on and off, you should be able to use the generator should the power turn off and resume electricity which may have been interrupted
On a standby generator 100 percent of the power drops before the generator will start.
According to my knowledge generators do consume power while in the standby. A backup generator is only allowed to operate continuously for up to 200hrs.
The Generac Guardian Series 5875-20kW Smart Circuit Standby is a good standby generator which will power your whole home in the event of a power outage.