24小时日本在线观看.www免费|国产天天干精品天天操|A级片日韩亚洲视频中文版|久久久久久久久久综合日韩A片|

Crosslinking cable tells you how to choose the residential wire it?

Time:2017-09-12
Now, in general, most people use cross-linked cables in their homes and sometimes choose their own wires. What options do we have to choose from at this moment? Now we will tell you how to choose a residential wire from a cross-linked cable What?

Now,  in general, most people use cross-linked cables in their homes and  sometimes choose their own wires. What options do we have to choose from  at this moment? Now we will tell you how to choose a residential wire  from a cross-linked cable What?

We  all know that the residential line conductor material and cross-section  - conductor material with "copper" and "aluminum" of the points, first  of all should be used in residential copper wire, and should use large  cross-section of copper wire. If  the wire cross section is too small, the consequence is that the wire  heat increases, the outer insulation aging accelerated, easily lead to  short circuit and ground fault. According to relevant state regulations, the cross-sectional area of  the copper wire should be 10 mm2 before the meter, 2.5 mm2 for the  general lighting and socket copper cross-section in the house, and at  least 4 mm2 for the copper wire cross-section of air conditioners and  other high-power household appliances.

Residential line conductors are selected single-core insulated wire. Residential power lines in general are:

1,  the use of protective plastic boxes to wire, buried in the wall to use  hose (including pvc tube), the interface must be straight / elbow. Where it is not possible to use hoses, use metal hoses for protection.

2, air-conditioning lines to use 4 square millimeter, and to each air conditioner are separate alignment.

3, buy wires, switches, etc. must buy good goods, the only thing that is its compliance with national standards. At the time of purchase, the dealer should indicate this.

4, telephone lines, television lines and other signal lines can not be parallel with the wire alignment.

5, the main line with 2.5 mm2 copper wire.

Through the above understanding, household power lines should be used BVV2 × 2.5 and BVV2 × 1.5 models of wires. BVV  is the national standard code for the copper sheathed wire, 2 × 2.5 and  2 × 1.5, representing 2.5 mm2 core and 2 cores 1.5 mm2. Under normal circumstances, 2 × 2.5 to do the main line, trunk, 2 × 1.5 to do a single electrical branch, switch line. Single-phase air-conditioning with BVV2 × 4, reprovision dedicated ground.

平舆县| SHOW| 于都县| 昆山市| 雷州市| 临沂市| 横山县| 龙井市| 富宁县| 汝城县| 连江县| 新泰市| 昌宁县| 子洲县| 屯昌县| 图木舒克市| 正定县| 萨迦县| 泽普县| 体育| 津南区| 台南县| 阜南县| 应城市| 古浪县| 云阳县| 昔阳县| 永城市| 楚雄市| 瑞丽市| 浦县| 简阳市| 绥江县| 佛教| 将乐县| 铁岭县| 洛阳市| 娱乐| 襄垣县| 运城市| 高碑店市|