International Library of Technology · Scranton, International Textbook Co. · leaf 265
Thissystem has the advantage that itis automatic in its action, requir-ing no attention other than the re-placing of old or burned-out lamps.It also has the advantage that itis not necessary to bring the cir-cuit to the station. One end ofthe circuit may be attached to themain at any convenient… … Fig. 42. /. III.—17 68 ELECTRIC LIGHTING. 16 a number of the shunt coils are liable to be burned out.The shunt coils are mounted in cast-iron boxes, which alsoserve for the base of the bracket supporting the lamp.Fig. 42 shows the shunt-coil box. The hole a is tapped
Electrical engineering
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