围棋少年第二部 www.rqmd.net 2017/06/22 浏览次数：
Most of the people should know now use cable support very widespread, disposal arrangements of cable support in power started among cable trench walls, a look at just know is a carrier bracket to support the utility, actually this is only one aspect of the reason, support another utility is the heat. Because had electricity cable revealed a large number of calories, the temperature will be long, affects the ampacities of cables, cable is usually placed outdoor evacuation, cable trench support disposal arrangements is a must, for this heat.
one. spacing between cables and brackets:
(1) power cable 200mm;
(2) 150mm control cable;
Two, extend the distance between meters, fulcrum distance:
(1) the distance between the cable bracket and the top of the vertical shaft or the floor shall be no less than 150 to 200mm; the distance between the bottom of the cable bracket and the bottom of the ditch or the ground shall be no less than 50 to 100mm.
(2) fully molded cable, its bracket level distance is usually 0.4mm.
The above is the minimum distance permitted between the cable brackets and the relevant responses of the cable support spacing.