The cables insulated in polyvinyl or polyethylene cover are intended to transfer electricity. Power lines can be placed directly in the ground, in cable channels, in moist areas, and even in water. Cables with small diameters are used in households to power whole buildings and individual items of energy equipment like pumps, heaters, motors, etc. The cables with larger cross-sections are used in the power industry to transfer electricity between transformer stations, as well as in industry to power industrial buildings, and in devices that require high power. The standard electrical and mechanical testing parameters rely on the strength tests of electrical insulation, cores resistance and insulation resistance.
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