Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 246
ltageis less than 300 volts, wires must be separated from each other atleast 2| inches and from the surface wired over at least | inch in dryplaces—in damp places at least 1 inch. For voltages from 301 to550 volts, the limit for low-potential systems, the wires must bekept 4 inches apart and 1 inch…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
