How can we understand the electrical wiring of so many cables ?, So many electrical wiring

How can we understand the electrical wiring of so many cables ?, So many electrical wiring

Whose lines are not messy? As long as you have mastered the wiring rules, you can understand the line.

What is the wiring rule?

Generally, construction from the end of the line to the end of the line is recommended. Specifically, wiring starts from the lamps or sockets at the last end, so that each wire along the line is collected to the distribution box and distribution board. The advantage of this method is that it can easily clean up the circuits connected to various electrical appliances and avoid confusion and omission when accessing the distribution box (Disk). At the same time, it is also convenient to reserve a proper length of wire when threading or entering the electric box to reduce the loss rate of the wire.

1. Create a pipe hanger

Pipe laying lines can be fixed by using different hanging parts or suspenders Based on the terrain. If the pipe line is laid along the wall or the bottom surface, the finished hanging parts (pipe code) can be directly fixed on the wall or the bottom surface. If the pipe line is suspended, it should be fixed with a boom. The hanger is generally made of angle iron. The shape of the hanger can be T-, I-, and II-type according to the form and quantity of hanging wire tubes. The T-type boom pipe is used for Vertical arrangement and hoisting, the I-type pipe is used for horizontal arrangement and hoisting, And the II-type is used for horizontal arrangement and hoisting of a large number of pipelines.

2. Wire Cutting, bending, and wire set

A. Render Manager

The fixed size of a pipe is 4 m. When cutting a pipe, the pipe must be "long first and short", that is, the pipe with long size should be cut first, and the pipe with short size should be cut later. This can reduce the loss rate of the pipe. When cutting the pipe, the number of input knives of the cutover should not be too deep each time. The rotation of the blade after the inlet is not difficult. The outer diameter of the tube along the blade is rotated once a week later, and oil lubrication must be dripped at the incision before the tube is cut to prolong the life of the blade.

B. Bend Pipe

Cut the pipe size should first bend the pipe to be bent before the wire can be set, otherwise it will be in the bend when the thread has been set Wire Broken. Before Bending, you need to bend two or more pipe wires onto the wire and bend again.

Pipe bending, it is best to use a pipe bending, in normal temperature can be directly used for bending the pipe bending specifications of 30mm. 30mm three kinds, more than diameter pipe bending need to use special equipment or in the tube sand heating to complete. If there is no pipe bending tool and the pipe bending is smaller than 20mm, you can use the elbow hole in the fixed brake of the pipe clamp to bend the pipe. During the operation, note that the bending radius of the pipe cannot be too small (six times the size of the pipe diameter). Second, you must gradually move the support point of the Force in the bending, and the force must be uniform to avoid bending the pipe.

C. Wire set

Wire Sleeve can be used for special wire board equipment, also available pipe threading machine, the former is light, the latter is heavy, but the latter can adjust the blade to adapt to a variety of pipe diameter of wire, it is effort-saving in wire set. When the wire is to constantly drop the oil on the wire knife, to maintain lubrication to reduce the resistance, when the set does not move, you can leave the knife to let the scrap metal can be smoothly discharged. After the wire is set, use a round file to flat the pipe mouth to avoid scratching the wire when wearing the wire.

3. pipe installation

In the way of pipe laying, the hanger or hanger is installed at a distance of 1.5-MB. Set the pipe to the rubber nozzle, put on the traction wire in the tube, and load the connector or junction box. Use a pipe code to fix the pipe series on the hanger or hanger, and connect each pipe series with a connector or a junction box to form an overall pipe series.

The branch circuit lines are directed to the top of the power distribution panel (box), and then arranged along the wall (cylinder) to the power distribution panel (box. When connecting points (including connectors, junction boxes, cable boxes, lamp boxes, switch boxes, and power distribution panels) of all pipe lines are welded securely with galvanized steel wires not less than 5mm in diameter as cross-connecting wires and pipelines, make the pipeline welded into an electrical whole and ground.

4. Wire laying

After completing the above work, you can start cabling. In addition to the designed traffic, it is best to select wires of different colors to facilitate the identification of different circuits in the same tube. When the identification color is not enough, several gaps can be cut out by a knife on the end of the wire to identify. Of course, it can save a lot of effort if there are "encoding particles" on the online terminal for identification marks. When threading, mark the line, zero line, and lamp control line of each loop, and use the wire in the reserved line to penetrate the wire into the tube.

Wiring can be performed after each loop wire is laid through. Each section of the line is connected in the junction box. After the junction box is connected, the wiring box is covered. Each lighting line is drawn out from the junction box. The method is: according to the number of lighting headers, the same number of hose connections are mounted in the "Knocking holes" in the junction box of the lamp head, and each connector is mounted with a metal hose. The lamp head lead is led by the metal hose from the junction box of the lamp head to the lamp, then cover the lamp case. After the line passes the test, it will temporarily fix all lead wires. Do not suspend the lead wires to avoid damage to the line during construction. The wiring of the entire metal pipe will be completed.