Insulators exhibited at the 1862 International Exhibition

[Trade Journal]

Publication: The Telegraphic Journal

London, England
vol. 1, no. 8, p. 87-88, col. 2, 1-2


(Continued from page 78.)

6. Insulators for Land and Aerial Lines.


No change of importance has occurred in the construction of land lines since 1851. Iron wire of about No. 8, B.W.G. (1/6 inch diameter) is still generally adopted for the conductor in England; larger gauges, such as No. 4, or even No. 1, are adopted for direct transmission over lon