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An OPGW cable contains a tubular structure with one or more optical fibers in it, surrounded by layers of steel and aluminum wire. The OPGW cable is run between the tops of high-voltage electricity pylons. The conductive part of the cable serves to bond adjacent towers to earth ground, and shields the high-voltage conductors from lightning ...
The catenary wire is made of copper or copper alloys of 70, 120 or 150 mm 2. The smaller cross sections are made of 19 strands, whereas the bigger has 37 strands. Two standard configurations for main lines consist of two contact wires of 100 mm 2 and one or two catenary wires of 120 mm 2, totaling 320 or 440 mm 2. Only one contact wire is often ...
Using a five-pound single-bit axe, competitors chop through a vertical standing aspen log 12 inches (300 mm) in diameter and 28 inches (710 mm) long. Timing begins on the "go" signal and ends when the log is severed. This event was combined with the men's underhand chop as the endurance or combination event in 2007.
mm in. mm 1/2: 16: 30: 13.6: 0.706: 17.9: ... High temperature, low smoke, ... low-friction paths for placing optical cables, which have relatively low pulling ...
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Jason Mendez/Getty; Noam Galai/Getty . Caitlin Clark at TIME dinner in New York City on Dec. 11, 2024; Megyn Kelly at SiriusXM Studios on May 20, 2024
Woodchopping (also spelled wood-chopping or wood chopping), called woodchop for short, is a sport that has been around for hundreds of years in several cultures. In woodchopping competitions, skilled contestants attempt to be the first to cut or saw through a log or other block of wood. It is often held at state fairs and agricultural shows.
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