[D8935AAS], Letter from John H Vail to Thomas Alva Edison, April 10th, 1889
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Title
[D8935AAS], Letter from John H Vail to Thomas Alva Edison, April 10th, 1889
Editor's Notes
[Note at top: This is ok your reply have two villages on ------ but -- ----]####Thomas A. Edison, Eq., Orange N.J, Dear Mr. Edison:--####Referring to your letter of February 23rd. Regarding extension of circuit at Spokane Falls, W.T. I am advised that the Spokane Falls Co. are going to run their dynamos entirely by water power.####Would it not be practicable to work two different styles of dynamos into the same general system of mains?####Let the 125 volt dynamos for the district near the station have the ordinary drop of from 10 to 12% on feeders; the dynamos for the outlying district be of higher voltage 160 volts giving greater drop on feeders, but so proportioned as to give the same voltage at the junction of feeders with mains.####I enclose you diagram which I think will bring out more clearly what I have in mind. This plan would save copper, and this copper item is the important one that embarasses the Company at Spokane Falls. I would very much appreciate, if you will kindly look into this and send me your views as early as possible.####Yours truly, J.H Vail, Gen. Supt.####[Enclosure]: Lamps 108 volts regular 3 wire systems 12% drop on 250 feeders 31 % '' '' 320 V" [Thereafter follows a diagram]####[name mentions:Thos Edison, John H Vail, Spokane Falls Company, West Orange Laboratory]
Author
Recipient
Date
1889-04-10
Type
Folder/Volume ID
D8935-F
Microfilm ID
126:262
Document ID
D8935AAS
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University