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 227
her method of locating across by employing the two crossed wires only. Inthis test it will be seen that the resistance of F isneglected, but the resistance between wire a andground at distant station figures in the result andcannot be accounted for. Earth currents, or dif-ference in potentials… … L-|i|i|i|i|i|f-4.gr. Fig. 116. In arranging for this test the next distant stationbeyond fault F is asked to ground one of the wires,and this wire is connected to point L of bridge.Arm A of bridge is then shunted out with a pieceof copper wire or else plugged up, and that ter-minal of galvanometer…
Electric testing · Electric apparatus and appliances
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