Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 73
mps are by much the larger extent run in series, the insulationresistance of their circuits is found in a manner similar to that for multiple 60 MEASUREMENTS. circuits, but the formula differs a little. Let the following figure be atypical arc circuit, with a partial ground at c. First find the… … -* * * * * *— some convenient number. For convenience in locating the ground, get theaverage volts per lamp by dividing the total volts V by the number of lampson the circuit; the writer has found 48 volts to be a good average for tbeordinary 10 ampere lamp. With the 16 lamps shown in the above…
Electrical engineering
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