Q:Cable protection tube where the need to play a trumpet what role

ODF is suitable for ODN network office room and optical distribution point, FDT for outdoor cable centralized wiring management; the two are common to be able to properly complete the wiring cable and the introduction of fiber optic cable connection and distribution, and has the optical signal power Distribution function; the main difference is that ODF for FTTH on the cable requires more central room and light branch points. And FDT applies to the cable requirements of the district light branch points; specific can see the following network topology, FDT and ODF node location description is very clear. Hope to answer your doubts, thank you.

Q:District outdoor project using power pipe than the cost of cable trench how much, that is, the cost of electric power cable cable is almost the cost of more than 100 points or so, roughly

Haha, do not worry, you are a desktop or notebook ah, my notebook is . the method is very simple, your TV is best to have vga interface, if there is, buy a vga line, connected to the computer and television, But no vga notebook 3450 no way to Luo, desktop, then look at your video output interface and the TV can not correspond to the interface, if the There is, to buy a line of this interface, to get the

Q:Do you need a waterproof tubing for a sink pipe?

Plus the extension line is not good, there may be due to extend the line and the main line of the interface bad or poor extension of the poor quality, resulting in power supply instability. So it does not matter.

Q:I would like to ask who has the cable trench construction quality acceptance procedures

6KV cable can only be used for 3-6KV voltage level of electrical equipment, 6 / 10KV cable can be 10KV the following voltage. But for 6KV best. 10KV power supply. Preferably with 8.7 / 15KV cable.

Q:Find the outer diameter of the YJV cable and the required diameter

In order to make the cable reliable operation, the stress pipe in the cable head is very important

Q:What is the provisions of the provisions of the cable through the wall need to casing, such as how many chapters of the number of sections of the class! Hurry The

1. simple motherboard test card commonly used tools {screwdriver} and so on 2. purchase. Game disc. Mouse keyboard and the like. Headset, etc. 3. own a computer

Q:In addition to fire and emergency public parts, other pipe wear all use PVC pipe, so, the original a lot of like exhaust fan power, elevator power ah, the distribution box in the dual-control power supply are fire cables, Can you wear PVC pipes? I look like are wearing steel pipe, useless PVC pipe, the specification and technically can do so? Help! More

Red and white is the audio line, red, blue and green for a group is the video color line; some are three lines of the combination of AV cable, yellow is the video line, red and white is the audio line. If the plug line is what color, as long as the set-top box and the TV socket can be connected to the corresponding, that is, the red socket corresponding to the red socket, white socket connected to the white socket, that is, the output of set-top box Ji Ji The socket can be connected to the input socket of the TV.

Q:On the cable cross-sectional area, I would like to ask 3 * 10 +2 * 6 under the cable casing, casing to thick, the best formula

Support the first floor of the argument and then add that if the concrete wall hit the box is not deep enough to cut off a part of the back of the box will not affect the installation of the socket and switch if you do not use PVC pipe, then with a yellow tube package

Q:What is the commonly used communication cable connection casing?

The weight of the cable and the interlocking of the hard members of the wall may cause damage to the cable when the cable is damaged, resulting in a disruption of the power supply and leakage. In order to prevent the above problems, the construction specification The corresponding protection requirements, laying through the wall is one of the specific mandatory requirements.

Q:Consult the difference between electrical casing and wire casing

General steel with the growth of time will be rusted, the other water or soil should also cause corrosion of steel. Galvanized process refers to the alloy (metal) or other materials coated with a layer of zinc to the appearance of rust, rust and other effects of surface treatment technology. The purpose is to prevent corrosion of steel objects to improve the corrosion resistance of steel and service life.