The Main Difference Between Cables And Wires And The Basic Common Sense of Using Wires

1. Classification of wires and cables

1. Wire and cable for electrical equipment: the most common type of wire in daily life, mainly used for the assembly and shunting of electrical equipment and instruments.

2. Bare wires: wires without insulation layer, mainly used for outdoor aerial use.

3. Power cables: mainly used for transmission and distribution of electrical energy. It is characterized by wrapping oil-impregnated paper, rubber or plastic on the conductor. This kind of cable has strong corrosion resistance and insulation, can withstand high voltage, and has low requirements for the use environment.

4. Electromagnetic wire: All the wires on the electromagnetic coil are all electromagnetic wires. Electromagnetic wires have high technical requirements for wires, and need to adapt to harsh environments such as strong vibration, centrifugation, high temperature, and corrosion resistance.

5. Communication cables: mainly used for transmission of TV, telephone, network, broadcasting signals, etc. It is characterized by large signal capacity and strong anti-interference ability. Six basic common sense of wire and cable.

2, the classification of household wires

Household wires belong to wires and cables for electrical equipment, and BV wires (hard wires) and BVR wires (soft wires) are commonly used.

For lighting, electrical equipment, etc., the BV line has an inherent advantage in price. In addition, the resistance to pulling, extrusion, and corrosion of hard wires is much stronger than that of BVR wires. Make the BV line become the main force in the home improvement market.

BVR lines are usually used in communication, instrumentation, etc., and the carrying capacity of BVR lines for high-frequency currents is much higher than that of BV lines.

3. Which places need to use cable tray cable tray

There are three types of cable trays:

Tray-type straight-through bridge, suitable for power cables and signals, with a wide range of applications.

The ladder type straight-through bridge is generally used for cables with large diameters such as power cables.

Groove-type straight-through bridge, generally used for communication cables such as network, communication, and fire protection.

4. What is the electrical main wiring

Electrical main wiring refers to a transmission circuit used for power transmission or high-voltage equipment in the power system.

The basic link is the incoming line and appearance of the power supply, and the busbar is the intermediate link.

5. What accessories are needed for laying cables

Commonly used electrical accessories include cable terminal junction boxes, cable intermediate junction boxes, connecting pipes and terminals, steel plate junction slots, cable trays, etc.

6. Matters needing attention when choosing wire and cable

The rated voltage (insulation) of the wire is 1.5 times greater than the actual voltage.

The maximum current carrying capacity of the wire is 1.5 times greater than the actual current.

For longer wire laying, the voltage drop should be calculated according to the length.

The wire needs to carry the voltage and current when the protective device operates.

What is the main difference between cables and wires

When it comes to cables and wires, many people think that they refer to the same thing. In fact, there are certain differences in size, structure, use and characteristics of cables and wires. Today, the leaders of wire and cable manufacturers will take you to distinguish the difference between cables and wires.

Cables and wires are generally composed of three components: core wire, insulating sheath and protective sheath.

Cables are generally not needed in home decoration, and ordinary BV wires and BVR wires can meet the requirements. So what are the classifications of household wires?

1. Cord

Professionally known as BVR wire, it is suitable for cables and wires used in AC voltage 450/750V and below power devices, household appliances, instruments and telecommunication equipment, such as distribution boxes. Wires carry more power than hard wires.

2. Hard line

Professionally known as BV wires, mainly used for power supply, lighting, sockets, air conditioners, cables and wires for AC voltage 450/750V and below power devices, household appliances, instruments and telecommunication equipment. The hard line has a certain hardness, and it will be more convenient in bending and straightening.

3. Hard and flexible wires (weak wires)

They are composed of single and several copper core wires, generally referring to network cables, wires and cables with relatively low voltage.

Simple tips for differentiating wires and cables:

The ones with smaller diameters are called "wires" and the ones with larger diameters are called "cables".

The simple structure is called "line"; the complex structure is called "cable".

The wire is composed of one or more soft oxygen-free copper conductors, covered with a light and soft PVC insulation protection layer; the cable is composed of one or several insulated wires, and the outside is covered with a tough metal or rubber The outer layer, which belongs to the armored cable.

There is no strict boundary between the two. Usually, products with fewer cores, smaller conductor diameters, and simple structures are called wires, those without insulation are called bare wires, and others are called cables; those with a larger conductor cross-sectional area (greater than 6 square millimeters) are called large wires, Smaller ones (less than or equal to 6 square millimeters) are called small wires, and insulated wires are also called cloth wires. Cables generally have more than 2 layers of insulation, and most of them are multi-core junctions.