Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 82
Is ■ft c3» *1 1 m I ^-^F-^ … 2g Is 3.S ! I 1 H o <u •-a .a |S .. o u ft a «* | £ o o d click, trouble must be toward switchboard.Then at back of switchboard open ring sideof battery and tap as befoie at cable endof wires. If click be heard, trouble is inswitchboard cable; if no click be heard,trouble is in switchboard. 36.…
Electrical engineering
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