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- · New York, T. Audel · leaf 148
openedso that no more current can be obtained until one or more coins have been deposited.The indicating mechanism shows only the number of coins which stand to the credit ofthe customer, but, by consulting the meter dial, one can determine what fractional partof the prepayment next to be cancelled… … 568 HAWKINS ELECTRICITY Meters should never be allowed to remain with their covers off, inthe testing room, station, or any other place. In order to get the bestservice, and to give them long life they must be kept clean. How to test a meter.—A simple test for ascertaining whethera customers meter…
Electrical engineering
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