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 245
e presence of moisture on materials w^hich when dry wouldbe good insulators. These are, therefore, the general principles ofwiring under the established rules and will be illustrated in the dis-cussion of the various classes of wiring which follow. Open Work in Dry Places. Wires in open work may be… … Fig. 84. Large Feeder Wires Exposed on Insulators and it is much to be preferred except in exceptionally hot places asover steam boilers, where rubber insulation will deteriorate veryrapidly. The rubber-covered wire used for open work has a singlebraid over the rubber. The chief advantages of open…
Electrical engineering
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