As the name suggests, single-core wire is a single-core wire with only one conductor within the insulation layer. It's often used in home renovations, primarily for power supply, lighting, outlets, and air conditioning. It's suitable for cables and wires used in power plants with AC voltages of 450/750V and below, household appliances, instruments, and telecommunications equipment.
What is single-core wire?
Single-core wire has only one conductor within a single insulation layer. Common uses include home lighting, outlets, and air conditioners.
Single-core Wire Classifications
Single-core wires include BV wire, RV wire, and BVV wire. BVR wire is a multi-core wire made of a relatively soft material and consisting of many fine copper wires twisted together.
Single-core Wire Colors:
Common single-core wire colors include: red, yellow, blue, green, black, white, two-tone (yellow and green), and brown.
What are the advantages and disadvantages of single-core wire?
Advantages of single-core wire:
Due to its small cross-sectional area ratio, it's less susceptible to oxidation, withstands short-circuit current surges, and has a relatively long service life.
Disadvantages of single-core wire:
The conductor is stiff, making it difficult to pull in some places. It's difficult to straighten after bending, and repeated bending can easily damage the wire.
Single-strand copper wire can be used for household wiring, but some electricians require multi-core flexible wire. While there's no real difference in quality, multi-core flexible wire is simply easier to route than single-core wire.
This is a brief introduction to single-core wire, and I hope it's helpful.
In actual work, single-core wire is often used less frequently than multi-core wire. First, multi-core wire is flexible, making it easier to work with and less prone to damage. Second, due to the skin effect of AC current, the equivalent surface area of multi-core wire of the same cross-sectional area is greater than that of single-core wire. Therefore, the current carrying capacity of multi-core wire of the same cross-sectional area is greater than that of single-core wire. Therefore, the specific choice depends on the actual situation.
