Analysis of Construction Cable Laying Control Standard
Construction of cable laying in the laying, the total cross-sectional area of ​​insulated conductors shall not exceed 40% of the cross-sectional area of ​​the pipe; different circuits, different voltage levels and AC and DC conductors, should not wear in the same conduit, the same AC circuit wire Wear in the same metal conduit, three-phase or single-phase AC cables, shall not be split in a separate wear in the steel conduit; wire in the tube shall not have joints and kinks, joints should be located in the junction box (box).
In multiphase power supply, the color selection of the cable insulation layer in the same building and structure shall be the same, that is, the protection ground wire (PE wire) - yellow-green color, neutral wire-light blue, A phase-yellow, - green, C phase - red.
Wiring single 10mm2, multi-strand 2.5mm2 and below, can be directly connected with the device, the above through the terminals, and each not more than 2; actual connection cable more than 2, should be small busbar tap.
The structure of the automobile cab mainly includes: the hollow shell of the cab, doors, windows, interior and exterior trim parts, workbenches and body accessories, seats, and ventilation, heating, air conditioning, air conditioning devices, etc. In trucks and special vehicles, it also includes boxes and other equipment.
The cab shell is the installation foundation of all cab components, usually refers to the rigid space structure composed of the main load-bearing components such as longitudinal beams, beams and pillars and the sheet parts connected to them. Most passenger car cabs have obvious skeletons, while car bodies and truck cabs do not have obvious skeletons. The cab shell usually also includes sound insulation, heat insulation, vibration prevention, anti-corrosion, sealing and other materials and coatings laid on it.
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Shantui SL50W Custom Cabin And Covering System
And we have more.
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