[LM111390], Letter from Arthur Edwin Kennelly to Queen (James W.) & Co, April 27th, 1889

Item

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Title

[LM111390], Letter from Arthur Edwin Kennelly to Queen (James W.) & Co, April 27th, 1889

Editor's Notes

.####[page 190]####(21)####There ought really to be different tables for different kinds of services ones for underground mains another for overhead wires and a third for house works.####The matter is so important that I do not like to advise any precise formulas. I think that experiments should be made with specimens of covered wire in [woodwork? woolwool?] to represent actual practice and the limiting safer temperature found by a measured current from the known coefficient of resistance and now observed rise in resistance. If Mr Edison desired it we could probably make all the necessary measurements in one day. As it is, unless you fall back o the precedent of your small wire too cool and your large ones too hot, you run the risk of being unnecessarily severe on continuation on the one hand, or of -nc---ing cons--- from electric light critics on the other.####Yours very truly####A.E. Kennelly####

Date

1889-04-27

Decade

1880-1889

Type

Identifier

LM111390

Folder Set

LM111-F

Microfilm ID

109:297

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University