INSTALLATION OF* FIXED EQUIPMENT 



93 



the -district inspector. Each wire as it enters the porcelain tube outside the building 

 should have a small drip loop about 2 in. long to prevent water from following it into 

 the building. The location of the protector in the building should be determined before 

 the holes are made. It is often possible to locate the holes immediately above or below 

 the fuse terminals on the protector, thus securing the shortest length for the leading-in 



wires. 



Fig. 46 Method of making entry to building from main line 



The leading-in wires should not enter at the attic roof unless other ways are im- 

 practicable. In every case the holes should be started from the inside of the building. 



The line terminals of the protector should be connected to the line wire by single 

 No. 14 B. & S. gauge, braided and weather-proofed, rubber-covered, copper wire. The 

 leading-in wire should be soldered to the loop just below the insulator where the line 

 wire is terminated (Fig. 44), and should not come in contact with any part of the 

 building. 



Cb) Ground wires. Single No. 14 B. & S. gauge, rubber-covered, braided and 

 weather-proofed, copper wire should be used to connect the protectors with the ground 

 rod or ground wire. 



Ground wire outside of the building should be (Supported on No. 4 or No. 5 porce- 

 lain knobs. The knob should always be attached with a flat-head screw, and not with 

 a nail. 



The wire from the protector to the ground should be laid as directly as possible, 

 and should have no spirals, coils, knobs, or sharp bends. The ground wire should never 

 be placed near sheet-iron roofing, drain-pipes, etc., on the house. 



2 INSIDE OF BUILDING 



All joints and 1 splices of the wiring inside or outside of the building should be 

 soldered and taped. This does not apply to the connections made at the terminals 

 provided in the apparatus. Where a twisted pair is spliced, the joints should be 

 soldered at least 3 in. apart. In soldering, resin should be used as a flux. Chloride 

 of zinc; sal ammoniac, or other fluid fluxes are not satisfactory. The wires to be 

 soldered should first be scraped thoroughly and cleaned. 



All knob-and-cleat work should be done as neatly as possible. Wiring inside and' 

 outside of a building should be run in as nearly vertical and horizontal lines as 



