What Difference BV, BVV, BVVB, BVR Cable Wire?

VV: the term refers to the two layer of PVC wire

BV: PVC insulated copper wire, single core wire

BVV:PVC sheathed copper wire, two wire

BVVB: PVC sheathed copper wire, three wire

BVR: copper core PVC insulation wire, flexible wiring fixed occasions.

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