How to use a multimeter to detect the cable is good or bad
The front point of the information cable (super 5 or 6 lines) into the equipment room after the first access to the patch panel, the line hit the patch panel module, and then use the jumper (RJ45 interface) to connect the patch panel and switch The In general, the patch panel is used to manage the equipment, for example, if there is no patch panel, front-end information points directly connected to the switch, then if the cable once the problem, it is facing to re-wiring In addition, the management is also more chaotic, multiple plug may cause the switch port damage The existence of patch panels to solve this problem, you can replace the jumper to achieve better management So shortcomings without patch panel directly on the switch is obvious
5 square wire for the socket; single-core 4 square wire for more than 3 air-conditioning; single-core 6 square wire for the total Line, two-color line for ground wire
Because you say that the location of each water is a wet circle, then I certainly upstairs when doing waterproof, no water pipe around the additional layer, is not to take care of these weak links, resulting in water infiltration, the basic exclusion Wall tube pipe cracks, if the crack, then, is a large area of water seepage. You finally find upstairs to solve, if the delivery is still within five years, you can also find the property to help solve. If you can help to you, I hope you can adopt in time. '
