Power Cord Color Standards And Functions

We often see that the colors of the three wires are different in the three-core plug wire. What is the function of each wire of the three wires? Are the American standard wire and the national standard wire the same?

For three core wires

L pole: is the live wire.

Commonly used core wire color: black or brown (some companies call it brown, brown), these two colors are commonly used in American regulations and Japanese regulations, and brown (brown, brown) in European regulations

N pole: connect to the neutral line.

Common core wire colors: white, red, light blue. These three colors are commonly used in American regulations and Japanese regulations, and light blue is used in European regulations.

E pole: ground wire.

Commonly used core wire colors: green or green-yellow (some companies call it yellow-green or green-yellow, yellow-green).

When we buy power cords and cables, we can often see that the power cords and cables are printed with letters starting with some English letters such as RVVP, RVV, etc. Many people understand their meaning. In fact, they respectively list the types and uses of power cords and cables. Below we will explain the uses of several commonly used wire and cable representation methods.

Functions of various cables

RVV: (227IEC52/53) PVC insulated flexible cable (cross-sectional area: 0.5-6.0 cores 1-24)

Uses: power lines, signal lines, household appliances, small power tools, instruments and power lighting, etc. As long as the wire of this specification meets the national standard, the price is not much different, but there are many useful impurities in the market, the wire diameter is not enough, the number of meters is short, and the straight line (the core wire copper wire is not twisted or the core wire is not twisted, so the tensile capacity is greatly reduced, increased resistance) to charge. Derivative model: RVVS: The twist pitch of this type of core wire is encrypted, which is generally used in broadcasting systems.

RVVP: Copper core PVC insulated shielded PVC sheathed flexible cable, voltage 300V/300V2-24 cores. Main quality indicators: wire diameter (including core wire and braided wire, the thicker the better, the impurity copper should be made very thick to meet the resistance standard), copper core purity, braiding density, twist pitch. Uses: Instruments, meters, intercom, monitoring, control installation.

RVS and RVB are suitable for power cables for household appliances, small power tools, instruments, meters and power lighting connections. RVS can also be used for broadcast cables or instead of RVV cables. RVB can replace gold and silver wire in less demanding situations.

RG: Physically foamed polyethylene insulated access network cable is used to transmit data analog signals in the coaxial optical fiber hybrid network (HFC). This is the American standard, which is approximately equivalent to the national standard SYWV series. Main quality indicators: copper core wire diameter, insulation thickness, braiding material (mostly aluminum-magnesium wire braiding on the market, tinned copper should be used for good quality), braiding density.

UTP: Local area network cable Uses: transmission of telephone, computer data, fire protection, anti-theft security systems, intelligent building information network. Commonly used UTPCAT5, UTPCAT5E shielded model is STP.

KVVP: PVC sheathed braided shielded cable Application: signal transmission, control and measurement of electrical appliances, instruments and power distribution devices.

AVVR: PVC sheathed flexible cable for installation (cross{{0}}sectional area: 0.12-0.5 core wire number 1-24) Application: signal, control. Such as access control signal, control, PTZ control, etc.

RV, RVP PVC insulated cable, PVC shielded cable, mainly used in equipment.

BV, BVR PVC insulated cable use: suitable for electrical instrumentation equipment and power lighting fixed wiring, affordable and low resistance. In many occasions where the power supply is connected, more consideration can be given.

RIB: Speaker connection cables (fever cables, gold and silver cables) are often marked with the words "6N" and "7N" on the model of some audio cables, which are used to indicate the purity of the fever cables made of metal materials. For example, "99.9999 percent " can be represented by "6N", which means that its purity is 6 9s. The larger the number in front of N, the higher the purity of the audio line.

Whether the audio equipment of the home theater needs to use high-quality audio cables, the key is to grasp the principle of seeking truth from facts and doing what you can. For generally popular audio equipment (below 10,000 yuan), there is no need to deliberately pursue the high quality of the wire, as long as the copper core signal wire with a larger cross-section is used. For better home theater audio equipment, consider using high-quality audio cables.

HYV, HYA data communication cable (indoor, outdoor) (core wire diameter {{0}}.5mm, core wire number 2, 4, 8, etc.) that is telephone line, used for the connection of telephone communication and radio equipment and the junction box of the telephone wiring network For wiring, etc. In the market, the diameter of the core wire is generally 0.4mm, and some are almost made of steel wire or copper-aluminum alloy. Another telephone line is generally insufficient meters.

SYWV (Y), SYKV cable TV, broadband network special cable structure: (coaxial cable) single oxygen-free round copper wire plus physical foam polyethylene (insulation) plus (tin-plated wire plus aluminum) plus polyvinyl chloride (polyethylene) Ethylene), (equivalent to American Standard RG-6, RG-59). Nowadays, aluminum-magnesium wire is used in the market for braiding (can not be welded, easy to oxidize), and the core wire is made of copper-clad aluminum and copper-clad steel, so many people think that SYWV wire is cheaper than SYV wire, but in fact it is not the case.