Cyclopedia of applied electricity : 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, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 384
s Arc Lamp Mounted on Ornamental Pole Fig. 56. Ornamental Incandescent Lamp PolaCourtesy of Smyser-Royer Company 344 ELECTRIC LIGHTING 81 Ornamental street lighting must produce illumination equal toor better than that considered good lighting with the ordinary sys-tems and after that it is a… … o Fig. 57 Curve Showing Annual Operating Cost of Arc Lamps on4000-Hour Schedule more than one size and its use may be outlined as follows: Forbusiness streets use a unit of 14 feet 6 inches high, spaced 75 to100 feet, and staggered, i. e., lamps not placed opposite each otheron the street but the…
Electrical engineering
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