Under what circumstances should the cable be fitted with a pipe protection? How does pipe diameter choose?
They are only the outer circumference of the PE is the cable and water pipes, the material characteristics of the water pipe more hard and brittle
Upstairs do not misunderstand people, and use the design requirements and building fire rating, KBG GB is A-class fire protection materials, PVC B. B2 level or even lower, the requirements of Party A is justified
You said the fiber optic connection plate refers to the flange, for equipment and equipment between the links, such as A device SC port, B device PC port, then there is a fiber at both ends with the corresponding flange can link the device stand up. Distribution frame is generally in the engine room, out of the cable to the various buildings.
How to choose the corresponding casing according to the cross-sectional area of the cable: first of all to know the cable diameter, according to the outer diameter can calculate the cable cross-section, the choice of steel pipe is also based on the diameter should be calculated within the cross-sectional area to ensure that the cable cross- Section of the 40%, so the diameter of the choice is appropriate. Roughly estimate the pipe diameter should be 1.5 to 1.6 times the cable diameter. Cable protection casing than the production of high-end wire is much higher, the technical content is also much larger, the general cable protection casing is a 5 meters, both ends of the interface, too long enough, then you can use a few cable together.
