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| The following is excerpted from p176 of the 1910 edition of
Electrical Wires & Cables by the American Steel & Wire
Company. This detail page was added as a reference for other pages
when describing the use of splicing materials and methods. The
Joining of Cables a)
High grade insulating materials are carefully chosen to suit the
special conditions. b)
The work is done by reliable and experienced cable men under the
supervision of an expert who critically inspects all work. c)
Every trace of moisture is excluded from the joint and adjacent
parts of the cable. d)
The cable should never be bent to a radius of less than eight times
its diameter for rubber or cambric insulation, or ten diameters for paper
insulation. The latter as
already explained should in extreme cold weather be warm before being bent
at all. e) The layers of insulating tape are drawn tight to exclude air and are made to overlap each other. f) The lead sleeve is properly proportioned, well wiped on and entirely filled with compound previously heated to the correct temperature. Two holes are made in the top of the finished lead sleeve, one near each end as shown on next page, to permit of filling with the compound. As the compound settles, the sleeves have to be refilled from time to time until they are entirely full, then the holes through the sleeve are sealed. … Our copper jointing sleeves are made from pure copper. They are made in the most suitable lengths for regular underground joints, tinned and well finished. Each is provided with an opening along its entire length so as to permit of the solder flowing freely throughout the joint when made, thus insuring a good soldered union. Both ends of the sleeve are beveled off, and sharp edges which would have a tendency to cause a puncture through the insulation after the joint has been finished are removed. Because we had absolutely no idea what it meant to "wipe on" a lead sleeve, Ed Johnson of H.V.E.S. Electrical Inc was kind enough to provide a description as follows: "The lead sleeve is hammered or pinned down with a wooden device to round or taper the lead sleeve to the outside diameter of the cable. The lead sleeve tapered area and cable lead is scraped and cleaned from any dirt or oxidation and coated with styrene, then depending upon size of cable you pour 40/60 lead at a desired temperature for the cable using special wiping cloths to mold the lead from cable to sleeve. After pouring 40/60 lead you use torches to mold and seal wipe"
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©November, 2007 Tradeslang - Page Displayed