The use cases are different

BV: It is suitable for power devices, daily electrical appliances, instruments and telecommunications wires and cables with AC voltage of 450/750V and below, and is the most commonly used home improvement wire.

BVR: It is suitable for installation in electrical devices, instruments, meters, telecommunication equipment, power lighting and other circuits with AC voltage of 450/750V and below or DC voltage of 1000V and below. It is mostly used in places where the circuit needs to be bent and soft.

The conductor structure is different

BV: It is a single-core wire of copper wire, which is relatively hard, also called hard wire.BVR: BVR wire is composed of multiple stranded conductors, also known as multi-core flexible wire, B stands for cloth wire, V stands for PVC insulation, and R stands for soft.

The hardness and softness of the wires are different

BVR belongs to soft wires, while BV wires are hard wires.

Pros and cons

Advantages of BV: Because the wire is harder, the service life is long, and it is not easy to oxidize, so it is generally used in concealed projects. Disadvantages: It is difficult to straighten the wire after bending, and it is easy to be injured if it is repeatedly bent and straightened.

BVR (also called secondary line): advantages: the line is soft, mostly used in temporary power places, the requirements for the laying angle are greatly reduced, and it is suitable for turning and threading pipes. Disadvantages: short service life, fast oxidation rate, easy to break the core, local heating, etc., need to be replaced in time.

BV is a single copper core polyethylene wire, BVR is a multi-core polyethylene wire, one is harder, the other is very soft, but BVR is larger than BV in the same cross-sectional area of BVR, and it is also more suitable for screw crimping connection, and the cost is higher.