Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 219
109 to be thequickest and surest way of testing out such trouble.Each wire in turn is connected to the test relay whoseother terminal is connected to ground. All otherwires are then opened and a moderately strong bat-tery is placed to one at a time. Those that are 196 ELECTRICAL INSTRUMENTS.… … Fig. 110. relay should be left reasonably slack while this testis being made. When an opening or ground is located on awire by any of the methods described above, it is TESTING TELEGRAPH WIRES AND CABLES. 197 customary for the wire chief to order the linemanupon whose section the fault is located…
Electric testing · Electric apparatus and appliances
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