Probably the most important part of the system 

 is the GROUND, while conditions on lookout points differ 

 to such an extent that it will be necessary to use 

 different types of ground, the standard ground rod or 

 connection will be perforated copper cone filled with 

 ground charcoal, manufactured by the western Electric 

 Company and known as the "Paragon Ground Cone No.l";price 

 $1.65 each. These cones are 1 foot long and vary in 

 diameter from ! inches at the bottom to 4i- inches at 

 the top, and are provided with a wire cable connection so 

 that the lightning rods can be attached and soldered 

 without difficulty. One of these cones should be sunk in 

 the ground at each corner of the building, standing out 

 about eight inches from the structure and to such a depth 

 that the copper cable protrudes above the surface. 

 This will admit of a convenient connection and inspection. 

 The vertical rods on the four corners of the building 

 should be given direct connection with these ground 

 cones . 



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