A. The conductor is made of high-quality oxygen-free copper, which has good conductivity and low heat generation, which can meet long-term load use. B. Insulation is made of high-quality plastic, and the insulation performance is forced to wear, non-flame, and long service life.
C. BV is a single-core copper wire, which is hard and inconvenient for construction, but has high strength: BVR is a multi-core copper wire, which is softer and convenient for application, but has low strength.
D. BV single-core copper wire is generally a fixed place; BVR wire is a copper-core PVC insulated flexible wire, which is used in occasions where flexibility is required for fixed wiring, and is generally used in occasions with slight movement.
E. Flow of BVR multi-strand lines is larger than that of single-strand lines, and the price is higher. Generally, BVR can be used for the internal wiring of the cabinet, which does not require such a strong strength to facilitate wiring.