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 250
od is to be used for locating faultswhere the good and the bad wires are not equal toeach other. The connections are shown in Fig.130. It is the ordinary Murray loop, and it willreadily be seen that the resistance a to the fault will be gotten from the formula a = -— Z, where L is the resistance of… … Fig. 131. The resistance a to the fault from the binding-post B.L — 100A t1 is a = , where L equals the total re-sistance of the loop, A equals the reading of contactC, and£=: 1000 — A.
Electric testing · Electric apparatus and appliances
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
