Electricity a Condensed And Reliable Treatise Giving Full Directions for the C
Electricity a Condensed And Reliable Treatise Giving Full Directions for the C
George Little Fowler
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32. MULTIPLE ARC SYSTEM OF IN- CANDESCENT LIGHTING pendently of all of the others and may burn out or become destroyed without affecting the action of the others in any way. The two essential conditions for the use of this system are that the dynamo should maintain a constant voltage in the wires, regardless of the number of lamps in use ; and that only lamps intended for the same voltage shall be used. The working of this system is explained as fol- lows : The current generated by the dynamo f...lows out upon the wire and a certain portion of it cuts across to the return wire through each of the lamp circuits, the total output of the dynamo corresponding to the number of lamps in service. In order to lessen the work of the dynamo and for other reasons it is sometimes desirable to cut out certain lines of wire, and for this purpose switches are used. In electrical parlance a switch may be defined as a means for opening or closing Electric 3U0btfng 135 a circuit. They are invariably located close to the dynamo in the power house so that the cur- rent can be cut off from or turned into certain lines.
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