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 150
ed at least once a year, once in eighteen months, or once intwo yeais. the period varying with different companies, different types and different civicrequirements. Commutator t>-pe meters. ha\ing comparatively hea\-y moN-ing elements withconsequent rapid increase in friction due to wear on the… … . 661.—Internal connections of Sangamo watt hour meter (type D). A, copper discarmature, submerged in mercury; B, bridge wire between binding posts, for main loadcurrent, when both sides of the line are carried through the meter; CT, compoundingseries turns around pressure circuit magnet, building…
Electrical engineering
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