Q:The vertical clearance between the underground gas pipeline and the water supply pipe drain or other gas pipeline is

the exhibition hall on the fire requirements of the relevant norms, if you want to ceiling, indoor all the spray mouth must reveal a certain size of the ceiling, but also to maintain the level

Q:......4 * 1..2 * 1.5 how much cable to use the heat shrink tube

Fire is required to wear pipe, all around the same, you can directly with the local fire agency asked.

Q:How to choose the corresponding casing according to the cable cross-sectional area

It is recommended to use the new line, wire specifications and the original best or better, the connection part of the attention can be insulated

Q:Electrical design into the line in the embedded casing, embedded how much, buried a few basis is based on what? Why is it buried?

In fact, the phone and the network almost one or more brigade number of copper cable to pick up the front of the phone patch panel, and then plug in the front of your so-called fish bones, in the fish bones to pick up the phone line to the room panel, fish bones Every two cells is a number, the specific phone number to see how the phone is to get the answer to your question 1: like you said that the Internet phone to share a line of general law spacious and spacious satin and other advice but slipped in the integrated wiring is not allowed, so a lot of enterprises in order to save money will get, you want to put him into two lines, one line consists of 6 core network component, said a newly formed 2 telephone lines, principles, and above me 2 is the same: fiber jumpers and jumpers are not the same network, an RJ45 connector jumper cable, fiber optic jumpers are protected by a flexible optical fiber, there are many points ST connector type, SC type, FC type, a MU Type 3: the network patch panel on the back of the terminal, according to the patch panel manual on the map or the back of the patch panel in accordance with the color of the line into the corresponding terminal, 5 lines and 6 lines to play 4 different methods: the main distribution frame for use in the central office are on the front end of the letter Point modular device management

Q:Does the wire casing have an effect on the current?

There are two, do not know what you want to know which one. A kind of called the cable, the shape of the same as the tape, usually plastic products, and some middle there are no iron core core, need to twist a few laps to fixed. One end of the beam is made of a "back", and the other end has a saw-like saw, and the other end is inserted into the middle of the "back" card slot to be fixed.

Q:I know that kind of concrete row pipe, glass steel pipe. I would like to know when the cable buried, crossing the SC pipe laying, such as wearing 2x2SC100 steel pipe laying, this section of the pipe is not considered row of pipe? Is there any pipe made of steel pipe? More

A fiber optic cable with a coupler and a fiber jumper. One or more fiber optic cable with a fiber patch panel (patch panel has 4 to . one can even a core) according to your situation with a 6 fiber optic cable computer room: fiber patch panel 8 (a specific number of your own according to the actual calculation) coupler 8 fiber jumpers 8 (4 pairs, the packaging is a pack of two) (fiber jump Line can be based on the actual needs of the buy, 6-core fiber may only use two cores, the other backup) ------ weak: fiber patch panel 8 a coupler 8 fiber jumper 8 ( 4 pairs of packaging are two a pack) (fiber jumpers can be purchased according to actual needs, 6-core fiber may only use two cores, the other backup)

Q:Is there a power cable that does not have a cable protection tube

16mm2 and wood pencils are almost thick, sub-core soft and single-core hard-line soft calculation of the current will be more hard-line calculation of the current will be less electricity in the conductor of the epidermal movement.

Q:Indoor explosion - proof cable well embedded casing height

Power cables do not need to add cable protection tube, depending on the cable laying, armored cable generally do not need. If underground submerged, through the road, from the overhead line connecting cable into the underground or mechanical easy to reach the part of the general need to protect the tube, usually in the cable trench or cable tunnel laying cable does not require cable protection tube. In short, whether it is armored or non-armored cable installation and installation do not need to install protective tube, usually depends on whether the cable laying environment is vulnerable to external mechanical damage as a criterion, may be damaged by external mechanical Need to install, not vulnerable to external mechanical damage is not necessary, not stereotyped.

Q:(BV, BLV copper and aluminum single core, BVVB, BLVVB copper and aluminum protection, sets of lines, BVR multi-strand copper core installation line, VLV, VLV. VLV29 power cable) General incoming into the wire, with the model to add: I am sorry, I can not afford to use the cable, the YS universal rubber cable, YH welding line, VV. VV. VLV, VLV. VLV29 power cable) I would like to use the specific site with the copper core BV, BVVB, RV, VV series line specifications more

For safety, or equipment! Of course, not directly on the line!

Q:Cable laying buried laying how to do lightning protection grounding? I think there is design drawings are extended cable through the long laying flat steel or round steel. Can this design drawings do not have, because the cable wear PVC pipe? Or design missing? There are other reasons, thank you more

The first is to buy a computer connected to the TV dedicated audio and video lines, length specifications are: 1