[D8935AAW], Letter from William J Jenks to Edward Hibberd Johnson, April 26th, 1889
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Title
[D8935AAW], Letter from William J Jenks to Edward Hibberd Johnson, April 26th, 1889
Editor's Notes
[This is an enclosure of D8935AAV] April 26th, 1889####Mr. Johnson--This matter of the safe carrying capacity of wires of different sizes is well worthy of an investigation in the light of what Mr. Kennelly says. The tables thus far issued by the Light Company show the carrying capacity at a certain specified temperature and not the safe limit with a rise in ttemperature of a given number of degrees above that of the surrounding air.####You will notice that Mr. Vail is also desirous to complete the collection of whatever information we can secure on this subject.####It is particularly important that a table be made showing these figures with 97% conductivity of copper, and that in our futuire work arrangements should be made with the companies producing wire so that samples of their copper can be tested by us from time to time to determine whether we are treading on safe ground.####Do you authorize a repeat to Mr. Edison on the part of the Light Company?####Yours Very Truly, W.J Jenks####W.J Jenks: YES, E.H Johnson, Pres't####[name mentions: W.J Jenks, Edison Light Co., A.O Tate, A.E Kennelly, Thos Edison, E.H Johnson, Mr. Vail]
Author
Recipient
Mentioned
Date
1889-04-26
Type
Folder/Volume ID
D8935-F
Microfilm ID
126:268
Document ID
D8935AAW
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University