POLE-LINE CONSTRUCTION 



65 



of the tie wire around the insulator in opposite directions and wrapping them tightly 

 around the line with not less than three wraps, as close together and as tight as 

 possible, using pliers or connectors for the purpose. 



The line should be dead-ended (Fig. 24) at such places as the first or the last pole 

 on a main or branch line, or at a station. 



(fr) Tying hard-drawn copper wire. All tie wires for hard-drawn copper wire 

 should be of the same size as the line, 'but of annealed (soft) copper. >Soft tie wires 

 may be purchased in bundles or they can be made by cutting up the line wire and 

 heating and then cooling it slowly to make it less brittle. Care should be taken not 

 to heat the wire too hot, so that it pits, or to cool it too quickly. Hard-drawn copper 

 wire is dead-ended by the use of a half-length, double-tube copper sleeve. 



The regular tie for copper wire (Fig. 26) should be used in all cases except where 

 a figure 8 tie is required (Fig. 27). 



i less than Sc/ose. wraps 



Fig. 24 Method of dead-ending iron wire 



Ha // length x/eeve - /%> 



Fig. 25 Method of dead-ending hard-drawn copper wire 



8 SPLICING WIRE 



The standard Western Union joint (Fig. 28) or the standard three-wire splice 

 should be used for uniting galvanized-iron wire, and the standard double-tube copper 

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