The knowledge of the electric wire

Electric Wire is wire product used for transmission information can realize the electromagnetic energy conversion. When the family is decorated, the wire is indispensable to take cover engineering decorate building materials. To choose the right and high quality wire products, first of all you need to know some small common sense about the electric wire.
1. The difference between the wire and cable
Used for circuit decorate wire is usually referred to as wire and cable, wire and cable and no strict boundaries. If must distinguish, that electric wires are consisting of a root or a few soft wire, coated with soft sheath; Cable is composed of one or several root insulated wires, outside with made of metal or rubber tough outer package again. In domestic outfit generally don't need to cable, wire and will meet the requirements.
2. The classification of the household electrical wiring
Wire classification, different can be divided into various types according to use purpose. And other purposes such as household electrical wiring compared with engineering wires, its relatively low to the functional requirement of the wire. In particular, household electrical wiring has the following categories.
Hard wire: professional called BV wire, mainly used for power supply, lighting, socket, air conditioning, is fit for ac voltage up to and including 450/750 power equipment, electrical appliances, instruments and equipment with cable wires.

Flexible wire cable: professional called BVR wires, suitable for ac voltage up to and including 450/750 power equipment, electrical appliances, instruments and equipment with cable wires, such as distribution box. Flexible wire relatively hard line production is complex, high frequency circuit cord is bigger than the hard line carrying capacity.
Hard and Flexible wire respectively composed of single and copper thread, generally refers to the cable, low voltage wire and cable
3. Regular size of household electric wire
We often hear that how many square wire which refers to the size of the wire, the common size 2.5 square, 1.5 square, four square, 6 square, 10 square. Wire square is a square millimeter, refers to the wire cross-sectional area of the wire size.