Multiple systems of distribution for street lighting

The wider use of multiple lamps supplied from standard secondary distribution systems is considered as a step in simplifying operating problems and reducing the disproportionate cost which goes to cover fixed charges on special equipment and additional lines for street lighting only. The advantages in simplicity and flexibility of multiple connected lamps are discussed with particular reference to the frequent changes and extensions of street lighting service required in growing cities. The more general adoption of multiple street lighting is stated to be contingent upon fuller standardization of suitable methods of control applicable generally to existing electrical power distribution systems. Different devices in use or proposed for control of multiple street lamps are briefly described and the characteristics desirable in such apparatus are outlined. Attention is directed to the small differences in efficiency of present multiple and series incandescent lamps.