Wire to be insulated pipe
Buried lines can not be directly embedded in plastering layer, but in insulated pipes of electric wires. The wires in the casing can not have a twist or joint. Under normal circumstances, a group of wires are not allowed to exceed three turns when they are buried, and more than three turns must be connected. In order to fear the effect of beauty and to save things, a group of wires turn around the head in a group of wire laying, and the short time will not affect the use, but one of the wires will be out of question in the future, and a group of wires will not be used.
General cross section of wire for standard
The total section of a set of wires made of insulating sleeves can not exceed 40% of the diameter of the casing according to the regulations, that is to say, 60% of the activity space should be reserved. When the wire is working, it will produce a lot of heat. If the wire space in the casing is not enough and overcrowded, it will reduce the heat dissipation space of the wire, reduce the service life, and it is not convenient for the maintenance and pumping of the wire.