Cable laying buried laying how to do lightning protection grounding? I think there is design drawings are extended cable through the long laying flat steel or round steel. Can this design drawings do not have, because the cable wear PVC pipe? Or design missing? There are other reasons, thank you more
How to do between the casing and the cable waterproofing power distribution room and the basement will generally be reserved for some casing holes to penetrate the wall cable, but the cable through the casing, the casing and the cable how to do between the sealed waterproof A little puzzle. If the cable pipe seal to do so, the rain will follow the casing to the basement or distribution room irrigation, and may even be damaged by insects, thus affecting indoor safety. Traditional seal waterproof measures . casing filled with dry cement, and with a wooden mallet tamping, but the cable may be rammed the skin, there are leakage hazards, cement and plastic, steel and other materials, casing wall can not be completely sealed, There is water seepage phenomenon, can not be completely waterproof; . in the cable around the casing with water swelling type of water, such as water, etc., after verification, the effect of this method in general.
The first is to buy a computer connected to the TV dedicated audio and video lines, length specifications are: 1
Depending on the thickness of the pipe, home straps generally 16MM tube, slot open 2CM deep enough water pipe generally 20 tubes, slot open 3CM deep, slightly deeper hot water pipe
