. Electrical world. , New York, an order for copper cable for transmis-sion, which is probably the largest single order for transmission cableever placed. The order calls for miles of cable, equal in car- tion. Such signs in all sizes have been designed and are constructedby the Haller Machine Company, of Chicago. The letters theymake are indestructible and perfectly water-proof. The companyis glad to furnish data as to what the operating expenses of such asign would be. Any local electrician can connect the sign to servicewires, and electric light companies are usually prepared to furni
. Electrical world. , New York, an order for copper cable for transmis-sion, which is probably the largest single order for transmission cableever placed. The order calls for miles of cable, equal in car- tion. Such signs in all sizes have been designed and are constructedby the Haller Machine Company, of Chicago. The letters theymake are indestructible and perfectly water-proof. The companyis glad to furnish data as to what the operating expenses of such asign would be. Any local electrician can connect the sign to servicewires, and electric light companies are usually prepared to furnishlow special rates for current for this purpose. Underground Conduit Rods. Since the original appearance of screw joint couplings many de-signs have been put upon the market and a new one is found inthe Security Conduit Rod. The design is simple and not likely to get broken in a wagon orin a manhole. This is important, because the handling is of iron thev are not negotiable at iimk vards. The joint with. FIG. I.—SHOWING METHOD OF SPLICING. rying capacity to 3/0 B. & S. gauge, and weighing approximately4,200,000 pounds. The cable is to be used on the Nicaxia-Mexicopower transmission line, now under construction, and it will besupported on steel towers in spans of 500 ft. The length of thespans, together with the necessity of reducing the dip as much aspossible and the high wind pressure to be withstood, made the matterof cables one of considerable importance. The cable furnished bythe Ansonia Brass & Copper Company was designed by Mr. W. , of Seattle, Wash., electrical engineer. Mr. Clark found thatthe cable should have the highest possible elastic limit to withstand
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
