ELECTRIC CONCENTRIC CABLES. 39i by any fault as well as partially locating nected through ordinary flat clamps with long bolts, as in mechanically it, and on this account is worth atten- made straight joints. This switch tion. works perfectly under heavy oil, with Another arrangement, worked by … FIG. l6. FOUR-WAY ROTATING STREET SWITCH FOR TWO PARALLEL MAINS. the patented rotating switch may be 2400 volts on the main, and has carried seen in Fig. 16, where two parallel con- as much as 200 amperes. centric.mains are brought into one box, It presents a striking contrast to that and by…
Engineering
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