The book Wire in Electrical Construction was written by author Firm Roebling Here you can read free online of Wire in Electrical Construction book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Wire in Electrical Construction a good or bad book?
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ROEBLING'S SONS COMPANY 85 A telephone cable consists of copper wires insulated with paper, twisted together in pairs, and a number of these pairs twisted into a strand and covered with a lead pipe. Electric light or power cables consist of an electrical conductor, insulated and lead encased. We speak of rubber covered wires and cables. This is not exactly in keeping with the other uses of the word " cable. " Here CABLE seems to refer to the stranded con- ductor in whatever form it may be. A ca...ble in this sense is an electrical conductor, consisting of several copper wires twisted together. Thus a cable may be either a strand or a rope. Stranding. The system of stranding which has been developed in this country calls for strands equal to the regular sizes, as far as they go j for sizes larger than No. 0000 B. & S. The area in circular mils is given. In order to make No. 0000 B. & S. Of nineteen wires, each wire must be . 1055, and this is a special size wire. Nineteen No. 10 wires make the strand a little small.
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