1、 Disclosure and setting out

主要是由项目经理要对工人进行技术交底，然后再是工人师傅根据设计要求放线，一般来说开槽宽度50mm。放线应当精准到位，无缺漏情况。

The main task is for the project manager to provide technical disclosure to the workers, and then for the workers to set out the line according to the design requirements. Generally, the groove width is 50mm. The setting out should be precise and in place without any omissions.

二、旧物拆除

2、 Demolition of old buildings

若有电线及开关插座，那么接下来就是拆除原有电线及开关插座。

If there are wires and switch sockets, then the next step is to remove the original wires and switch sockets.

三、开槽钻孔

3、 Slotted drilling

依据施工现场实际的放线位置进行开槽，开槽时必须注意开槽深度。过墙和过梁的地方需要钻孔，钻孔时的孔径、孔距一般为100mm；电线和水管不能走一个孔。

According to the actual setting out position on the construction site, slot making must be carried out with attention to the depth of the slot. Holes need to be drilled in the areas where walls and beams pass through, and the hole diameter and spacing during drilling are generally 100mm; Electric wires and water pipes cannot go through one hole.

四、布管

4、 Pipe laying

根据在施工现场开设的沟槽进行布排管，在有水房间进行布排管时电管应布设在墙上、顶上。强弱电线不允许走厨房、卫生间阳台的地面。

Arrange pipes according to the grooves set up on the construction site. When arranging pipes in rooms with water, the electrical pipes should be placed on the wall or top. Strong and weak wires are not allowed to walk on the ground of kitchens, bathrooms, and balconies.

在穿线时，一根电线管内所穿电线的截面积之和必须小于该管道内截面的40%。一般情况下16mm的电线不宜超过3根，20mm的电线不宜超过4根。

When threading, the sum of the cross-sectional areas of the wires inside a conduit must be less than 40% of the cross-sectional area inside the conduit. Generally, there should not be more than 3 wires with a diameter of 16mm and 4 wires with a diameter of 20mm.

五、检查线路

5、 Check the wiring

运用万用表、欧姆表检查线路畅通无阻，不出现短路以及断路的现象，导线间绝缘电阻大于等于0.5mΩ，为安装开关插座作准备。

Use a multimeter and ohmmeter to check that the circuit is unobstructed and there are no short circuits or open circuits. The insulation resistance between wires is greater than or equal to 0.5m Ω, in preparation for installing switch sockets.

六、安装开关插座等

6、 Install switch sockets, etc

在安装之前不允许应用房屋内各插座，只能应用公司指定拖线盒。注意开关插座面板应平整、紧贴建筑物表面。同一场所的开关切断位置一致，且操作灵活，接点接触可靠。

Before installation, it is not allowed to use various sockets in the house, and only the designated cable box by the company can be used. Note that the switch socket panel should be flat and tightly attached to the surface of the building. The cutting positions of switches in the same place are consistent, and the operation is flexible, with reliable contact points.