-5- 



and expense. Relative costs also make the tractor-driven unit more practical. 

 For a given capacity It costs less than hialf as much as the engine-driven unit. 



Some units are mounted on a trailer and driven by the power take-off shaft 

 of the tractor. This type can be stored out of the weather and moved quickly 

 to the power center when needed. For this reason it is useful for operating 

 welders, power tools, water pumps, etc., in remote sections of the farm where 

 electric power is not available. It also eliminates the need for the somewhat 

 troublesome belt drive. 



Size . Generators come in sizes from 3,000 to 20,000 watts. On most farms 

 a 3,000 to 5,000 watt unit is large enough to operate the essential equipment. 

 It would not be practical to install a unit large enough to operate all of the 

 electrical equipment on a farmstead. The first thing, then, is to decide what 

 equipment must be operated and how much needs to operate at one time. 



The wattage demand of motors is about as follows: 



1/4 horsepower - 300 watts 

 1/2 horsepower - 575 watts 

 1 horsepower - 1,000 watts 



One point to remember is that a motor requires more wattage for starting 

 than for running. When you are operating more than one motor, you should start 

 the larger one first and then the smaller one. 



Locating and connecting. Put the generator as near the main service entrance 

 as you can. Size of wire to use will depend on size of the unit and distance it 

 must cover. No, 8 or larger will probably be needed. 



IT IS ABSOLUTELY ESSENTIAL TO CONNECT THE GENERATOR TO THE WIRING SYSTEM 

 THROUGH A DOUBLE-POLE, DOUBLE-THROW SWITCH. This switch should usually be 

 between the meter and the main switch, A double- throw switch has two purposes: 

 First, it prevents the unit from energizing the power line and endangering the 

 lives of repairman. Second, it prevents damage to the generator when service is 

 restored 



If you find that a stand-by power unit would be useful on your farm, there 

 is no reason why It shouldn't provide dependable power insurance for 25 years 

 or longer if you use and care for it In the right way. The cost could thus 

 be small compared with the convenience and protection, 



— R. W, Kleis 

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