The process of pulling, laying and connecting cables<br>Some general rules:<br>-For fire alarm systems, the main types of cables are 2x1.5mm2 cables and 2x0 cables. 75mm 2 fire prevention and interference prevention. Pay attention to the following points when pulling cables:<br>Nervous pressure.<br>Protect the cable when pulling.<br>+Curve radius:<br>-Most of these types of cables are flexible in design and very rooted in installation. However, we can't extend or bend the cable section to any degree, but we must abide by a certain range and reasonable allowable degree.<br>+Protect the cable when pulling:<br>In the process of cable pulling, in addition to observing the tension and curvature of the cable, it is also necessary to avoid contact between the cable and the surrounding objects that damage the cable.<br>-For example, we won't pull the cable over sharp surfaces and metal corners, because it will damage the cable shell and, worst of all, cut the cable.<br>Put the signal wire on the ceiling and on the concrete wall.<br>-The operation of the gooseberry pipe is installed on the ceiling, and the concrete beam is carried out first.<br>-Stay in the jealous tube and wait in the connection box for the equipment.<br>The rope should not be too tight, it will break easily.<br>-Extra 20 ÷ 30cm at the connection position, so as to cut off the connection later.<br>-The job of the rope is not to repaint, but to get there again. If there are potential parts, investors must be invited to make acquisitions before filling them.<br>-When nailing the conduit to the ceiling, the conduit shall not be nailed at will, but must be nailed in the correct position determined in advance and approved by the Wire Control Regulations.
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