Modern practice of the electric telegraph. A handbook for electricians and operators (1872)
Pope, Frank L. (Franklin Leonard), 1840-1895 · New York : D. Van Nostrand · leaf 57
.The manner in which the arrester is connected with thewires leading into an office will be seen by reference tofig. 18, where the two line wires, L and L, are attachedto the two upper plates of the arrester, X, while a wireleading to the ground at G is attached to the lower plate. 72. BRADLEYS… … It depends for its action upon the well ascertainedfact that lightning always passes from a point to a platewith great facility. The line wires leading into theoffice are attached to the metallic plates A and B bymeans of binding screws beneath, the ground wire beingattached in the same manner to…
Telegraph
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