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Copper Metal Joint Housing/Casing

An XLPE power cable jointing on site, joining two(2)lengths of cables 500/600 meters long to make a line 1000/1200 meter; joint/joined part is to be exactly of same cable construction, meaning continuity of each cable construction layer of same integrity of material. This will ensure current flow does not experience or is not exposed to higher resistivity, meaning no additional resistance to flow of current.otherwise, a hot-spot will develop limiting the current currying capacity,reduction in current flow, which is loss of power in terms of monetary Loss-money. Not acceptable in a multi-milion dollar investment, return of investment reduced, Longer years of recovering invested capital.
 
Copper Tube is re-construction of "Copper wire Screen", or sometimes called "Metallic Screen". It has no part in cable current carrying capacity. BUT it has a protective role/function against water ingress into joint body. In case of a Short Circuit, failure or breakdown of XLPE Insulation, current normaly flowing smoothly in Copper Conductor, Copper Wire Screen serves as flow path for induced currents and High Short Current flow into ground via Link Boxes.
 
Copper Tube is the re-constructed "Copper wire screen" in the making of a power cable joint; the continuity of cable metallic screen.

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