Also called rigid mineral insulated cable or magnesium oxide cable, it is a copper core copper sheathed cable insulated by mineral material magnesium oxide powder. The mineral insulated cable is composed of two inorganic materials: copper conductor, magnesium oxide and copper sheath, and has a compact structure. Rigidity, the weight is about twice that of ordinary cables, the highest fire rating, and it is commonly used in developed countries in Europe and America
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