FARM LIGHTING AND HEATING 



343 



In the installation of a small low-voltage electric plant, be 

 sure that all wire is of ample size. The mistake is often made 

 of using the same size wire as used in wiring city residences 

 where a higher voltage is used. All wiring should be prop- 

 erly inspected to see that it meets all insurance require- 

 ments. The National Board of Fire Underwriters of Chicago 

 will provide rules for this work. 



In operating a small electric plant, pay especial attention 



FIG. 339. Farm electric plant. 



to the care of the storage batteries. The upkeep and replace- 

 ment cost of the storage battery is the most expensive item in 

 the cost of operating an electric plant. 



312. Acetylene Lighting Plants. Many farmers pur- 

 chase the acetylene light plant because it is cheaper to oper- 



