Q:Cable laying allows the laying of steel pipe laying, and insulated wire according to the regulations 8.3.9 should not wear metal pipe in the outdoor direct laying. If necessary, for the secondary load and the line is less than 15m, can be used to wear metal pipe laying, but should be used not less than 2mm wall thickness of the steel pipe, and take a reliable waterproof, anti-corrosion measures. Personal understanding is because: cable laying through the metal pipe through the thicker, to achieve water and corrosion requirements, and wire room wear metal pipe laying, the metal pipe is thin, may not reach the water and corrosion requirements? Or cable insulation has 2 layers, and the wire is only 1 layer, so buried in the outdoor pipe, the more humid environment, the cable can not wire? Seek answers. Thank you. More

Connect one end of the white cable TV cable to the RF input terminal at the other end of the cable TV terminal box

Q:Yjv22 cable laying pipe when the casing with plastic or steel pipe

Can not. General three phases are used as power output. Although your problem does not specify how much power, but as a three-phase motor, very few 100w below the motor. The next analysis: 1 If the general three-phase voltage, that is, 380v, control cable voltage does not meet the requirements. 2. If it is a special low-voltage motor, the rated input voltage is reduced, which means that the motor's rated operating current will increase, so that the conductor diameter of the control cable can not meet the current requirements.

Q:Cable transfer box is a trunk for the trunk cable, wiring layer cable to provide fiber optic cable into the end, the transfer of the transfer device. What is the meaning of the end of this sentence? What is the meaning of the end of the cable? (5 points) Please answer in detail. More

The quality of the wire tube is too bad! Depends on the degree of flat, if not affect the use of no relationship, such as the impact of threading or over the water will use the hammer to cut after the re-open.

Q:Where should the inner diameter of the plastic tube of the cable be at least the number of times the outer diameter of the cable? The cable is more online

Sprinkler 3 meters a bridge and the distance between the fire pipe is generally about 1 meter. Fire sprinkler for the fire sprinkler system, when the fire, the water sprinkled through the sprinkler splashing pan for fire, the current is divided into drooping sprinkler, vertical sprinkler, ordinary sprinkler, Sprinkler and so on. Fire pipe is for the establishment of the fire pipe system, due to special needs, fire pipe thickness and material have special requirements, and spray red paint, transport fire water. Cable bridge is divided into trough, tray and ladder-type, mesh and other structures, by the bracket, arm and installation accessories and other components. The inner frame of the building can be set up independently or attached to various structures and corridors. It should be characterized by simple structure, beautiful appearance, flexible configuration and convenient maintenance. All parts are galvanized. , Installed in the building outside the bridge.

Q:For example, 4 * 25 + 1 * 16 cable connector used to the above specifications of the material is how much, their own use what? The The More

Sell pipe where the joints have to sell, a dollar can buy several. Bought directly behind the head of the tube can be, in order to prevent the joints at the spondylolisthesis, can be used after the PVC glue and then inserted into.

Q:What are the requirements for the thickness of the protective tube for galvanized steel pipes used for protection of buried cables? What is it? The design is not clear

What are the requirements for the laying of cables in the pipe laying pipe pipe, asbestos cement pipe or concrete pipe, pipe must be smooth inside

Q:How to deal with the cable wall casing waterproof?

SATA power extension cord Serial power extension cable SATA power male - female extension line

Q:Why does the wire tube make the jumper

Move, transport than metal pipe and cement pipe easy and convenient Construction and installation is simple, both easy and effort Corrosion resistance, insulation, non-magnetic, acid, alkali, flame retardant, anti-static Bending elastic modulus is good, completely solve the metal pipe perishable, no distortion of the characteristics of elasticity, but also to overcome the easy aging of the plastic tube, poor impact resistance Water resistance is good, can be used in wet or long-term use of water is not bad Due to the specific properties of glass fiber reinforced plastic, the life of the glass pipe over 50 years NCBB said glass fiber reinforced plastic cable protection tube, is also a kind of glass fiber reinforced casing, 100 × 5 that diameter 100mm, 5 side by side

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:Outdoor buried cable is not buried directly buried, what is the requirement

Power cable heat shrink tubing, according to the voltage level 1KV, 10KV, 35KV