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 239
int where the measurementplaced the fault, until the warm spot is found. This method has frequently been made use of togreat advantage where the sheath of cable bore nosign to indicate the location of the fault. There arecomparatively few cases of trouble in aerial leadcable where the method will… … Fig. 123. Another method which is referred to in some ofthe text-books (see Youngs Work on ElectricalTesting) is to send a moderately heavy intermittentcurrent into the faulty conductor and then searchfor the fault by passing a coil of insulated wire inseries with a telephone receiver along in…
Electric testing · Electric apparatus and appliances
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