Cyclopedia of Applied Electricity, Vol. 5 of 7

Excerpt from Cyclopedia of Applied Electricity, Vol. 5 of 7: 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 Copper and aluminum are used in the commercially pure state and are selected on account of their conductivity and comparatively low cost. The use of aluminum is at present limited to long distance transmission lines or to large bus bars, and is selected on account of its being much lighter than copper. It is not used for insulated conductors because Of its comparatively large cross section and consequent increase in amount of insulation necessary. Other metals may serve to conduct electricity but they are not applied to the general transmission of energy. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.