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 169
as possible. All conductors should have ample current capacity, and in their 146 UNDERWRITERS REQUIREMENTS 25 installation special care must be given to securing excellent insula-tion and reliable supports. Due regard should be given to thepossibility of injury to conductors by tools, belts,… … Fig. 22. Old-Style Type of Wood-Frame Switchboard by the large currents to be cared for and the presence of a greatnumber of conductors which may have to be placed rather closelytogether. Switchboards. The danger of fire at switchboards lies in thelarge number of wires usually concentrated on them,…
Electrical engineering
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