INSTALLATION OF FIXED EQUIPMENT 



99 



Fig. 51 ^Method of installing Invite -coil to drain line of static electricity 



Section 78 Special Installations 



It is possible under this head to discuss and illustrate only a few of the more 

 common types of special connections encountered on forest protection lines. <In 

 many cases the local conditions at the station where the installation is made must 

 determine the details of the connections. A knowledge of general principles such 

 as are stated in Chapter XIV, together with a study of the reference works listed 

 in Appendix B will often enable the officer in charge to work out the best type of 

 connection. However, problems sometimes arise, especially where foreign lines are 

 involved, that are highly technical in character. These should be referred to the 

 district inspector with a full statement of all the material facts in each case. 



In the following description of special installations reliance is placed largely 

 on diagrams. Fig. 53 is the legend which shows how the various parts of the tele- 

 phone equipment are graphically represented in these diagrams- 



79211 7 



