St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 118
Fig. 156. many other conditions. It should be remembered thatthe current has to be carried to the lamp or motor,114 HOW ELECTRIC CURRENTS ARE DISTRIBUTED. II5 through which it passes, and then back again to thedynamo, to form a complete circuit. A break anjwhere … Fig. 157- in the circuit stops the current. Insulators are as impor-tant as conducftors. 139. Mains, Service Wires, etc. From the switch-board the current flows out through the streets in largeconductors, or mains,the supply being keptup by the dynamos,just as water-pressureis kept up by the…
Electricity
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