[LB035215], Letter from Thomas Alva Edison to Hargis and Eastin, December 21st, 1889
https://edisondigital.rutgers.edu/document/LB035215
Transcription
Dec. 21, 89 Messrs Hargis & Eastin Bull Block, Louisville, Ky. Dear Sirs:- I have received your letter of 10th instant, and if you will send me a list of the questions which you desire to have answered, I shall be very glad to comply.##The pressure of 500 volts employed on the trolley wire overhead electric railway system, is not dangerous to life; but the other wires to which you refer carry dangerous pressures.##With regard to the fire risk, all electrical lighting and telephone wires which enter buildings should be furnished with safety fuses. Yours very truly, [signed] Thos A. Edison