[D8361ZBX], Letter from William Symes Andrews to Thomas Alva Edison, August 7th, 1883

https://edisondigital.rutgers.edu/document/D8361ZBX

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Title

[D8361ZBX], Letter from William Symes Andrews to Thomas Alva Edison, August 7th, 1883

Editor's Notes

[INTERESTING FOR ISSUE OF DESIGNING 3-WIRE CONDUCTOR SYSTEM. hard to read under extensive TAE marg] Seems to be problem with connections. Your suggestion of extending 3-wire system in the sercies has been foretalled; Hannington's men have done it two or three places. What's right percentage of loss to allow---they seem too large. TAE marg: "We do not have more than 1 percent drop in service, but they can be calculated for maxijmum lamps used & not for all the lamps actually in but never used simultaneously on 3 wire system service. Calculate as if there were 2 lamps in series, or 4 times less copper, then add the middle wire= There is [-----] in wire of 62.5pct if 2nd wire was not used that would be required 1/4 the amount of copper as in regular service 4 lamps on 3 wire counts as one as against regular service."

Date

1883-08-07

Decade

1880-1889

Type

Folder/Volume ID

D8361-F

Microfilm ID

70:370

Document ID

D8361ZBX

Publisher

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