What color line does the power line color represent?
Home appliances wires can play a very important role in the family. At the same time, it is also a good use of the safety of people affected, so when choosing a time, not only to buy, but also to understand the color of its distinction. The following Xiao Bian will introduce to you the power line color represents what line and general home improvement wire with what specifications.
Power line color represents what line
1, three-phase five-wire system: the color of the power line This is also the first three lines (AC, B, C line), neutral (N line); and ground (PE line). The three-phase five-wire standard conductor color is: A line, B line blue (green), C line red, N line brown, PE line yellow green or black.
2. The voltage (ie, line voltage) between the phases of the civil power supply line is 380V, and the voltage between the phase line and the ground or neutral line (that is, the phase voltage) is 220V. For example, as for the entrance line, it is also generally necessary to use a single-phase three-line system, that is, one of the three phase lines plus the neutral line (as the zero line) and the ground line.
The phase of 220V AC (FireWire) is red or brown because these two colors are hot colors. In general, you can use blue or green when using zero line, and black or yellow-green for ground. The most commonly used is the phase line red, neutral blue, ground black, yellow-green.
3, DC power cord: red represents the positive pole, black is the negative pole
Household power cords should use BVV2 x 2.5 and BVV2 x 1.5 models of wires. BVV is also a national standard code, which is copper sheathed wire BVV2 x 2.5 and BVV2 x 1.5, representing 2 cores 2.5 mm2 and 2 cores 1.5 mm2, respectively. Under normal circumstances, BVV2 × 2.5 as the main line, trunk, BVV2 × 1.5 as a single electrical branch, switch line. One-way air conditioning special line with BVV2 × 4, with a special ground.
What are the specifications for general home improvement wires?
1, BVV2 × 2.5 per roll length is 100 ± 5 meters, in general, this market price of 280 yuan. Informal products range in length from 60 to 80 meters. Some manufacturers have made the insulation skin thick, making it difficult for the expert to see the problem. You can approximate the length by counting the number of turns of the wire and multiplying it by the radius of the entire roll. The price of such products is between 100-130 yuan.
2. The wires used in home improvement are generally single-stranded copper wires. The cross-sectional area mainly has three specifications, namely 4.0mm2, 2.5mm2 and 1.5mm2. There are also 6.0mm2 specifications, mainly used to enter the main line, almost no or very little amount of home improvement, generally not included in the scope of home-use circuit lines.
3, for fire protection, maintenance and safety, so you choose the best home decoration wire specifications with the Great Wall logo best use of "national standard" copper core wire, wire rod slot area is generally: home decoration wire specifications lighting line is selected 1.5 square mm , And the use of line socket 2.5 square millimeters, pay attention to the air conditioning line should not be less than 2.5 square millimeters, home negative line (zero line / ground line) is best to use green and yellow color line, and then switch line (FireWire) is used red, White, black, purple, etc. We must keep the same color and use of the thread in the same home improvement project.
Summary: Regarding the color of the power cord and the general content of the home-made cord, what is the relevant content? To introduce this, when you install the cord, you must first understand the meaning of different colors. It is not the same, so this must be understood in advance. Caixing.
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