How many wires do I need to pull for the three position dual control of the intelligent zero live to

1. Dual control, also known as duplex switch, refers to the control of a lamp in two places, and each switch must have at least three wires.

2. Dual control, also known as double switch, means that the same lamp can be controlled in two different places, and each switch must have at least three wires.

A dual-control switch is a switch with two contacts (i.e., a pair) of normally open and normally closed at the same time. Usually two dual-control switches are used to control a lamp or other electrical appliances, which means that there can be two switches to control the switch of electrical appliances such as lamps and lanterns, for example, turn on the switch when going downstairs and turn off the switch when you go upstairs. If you want to turn off the lights, you have to run downstairs to turn them off, and you can avoid this trouble by using dual-control switches.

In addition, the dual control switch is also used to control the lamps and lanterns that need to be forcibly ignited in the emergency lighting circuit, and the two ends of the dual control switch are connected to dual power supplies, and one end is connected to the lamps, that is, a switch controls a lamp.

3. Before entering the first switch, there are two, one zero and one fire, and after the first switch is three, one zero two contact wires (the contact line is a direct connection between the switch and the switch, around the lamp, the reason why it cannot be called the live wire is because it has been controlled by the switch, not directly connected to the distribution box, just like the line from the lamp to the switch is called the control line, not the live wire) to pass you a schematic diagram of the dual control switch, and I will understand the wiring diagram drawn by hand. If you control two or more lights, there are 4 wires between the lights. There is also a situation that upstairs and downstairs control, the lamp is in the middle, in that case, the line before the switch is two, between the switch is three, to the lamp there are only two, as shown in Figure 4 left, the diagram is just a wiring diagram, in the specific construction, may be in the floor up and down the meter, there will be a junction box, lay a pipe from the junction box to the lamp, so that the switch from the upper layer to the junction box to the floor needs two pipes, then this meter should be 5 lines,

Hello, I have seen your question and am sorting out the answer, please wait a while How many wires does a single and dual control switch need? Single-gang and dual-control switches can be used with at least 3 wires. One open and double control is two switches, each switch is three wires:

A switch one live wire, two control live wires; B switch three control wires. Extended information: The power live wire is connected to the No. 2 terminal post of the first dual-control switch and the No. 2 binding post is connected to the No. 2 terminal of the second dual-control switch with 2 wires respectively.

The No. 2 binding post of the second double-control switch is connected to the lighting fixture, and the other terminal of the lighting fixture is connected to the neutral line of the power supply. This completes the wiring. Dual-control principle:

If the two dual-control switches hit the "position" at the same time (or hit the "position" at the same time), the live wire will be connected and the light will be onIf one of the two dual-control switches is in the "through" position and the other is in the "through" position, the live wire will not be connected, and the lights will be turned off. A dual-control switch is actually two single-pole double-throw switches connected in series before being connected to the circuit. Each SPDT switch has three terminals, one with two contacts and one knife.

The triple dual control switch uses 7 wires. There are 2 wires for a single switch: one is the power live wire and the other is the wire connected to the lampIn addition, a dual-control switch needs to control 2 objects, and 1 wire needs to be added, so it is safer to use 3-wire dual-control switches to cut off the live wire (L) and neutral line (N) at the same time.

The 3-gang dual control switch can share 1 live wire, one switch is directly connected to the live wire, and the other 2 switches are connected to the live wire with a short jumper, so a total of 7 wires are used.

<> such as the source diagram, for the two places to prepare the crack Qing control imitation of a lamp of the dual control switch "double fire" connection.

Two switches control a lamp, the zero line does not need to enter the switch, the zero line is directly connected to the lamp, just draw a simple picture for you, and you will understand the friction when you see the hall burning, and you will be ugly, and you will give one if you have a role.

The switch is not a zero line, you are a single open double control switch, so there are only three binding posts, if you only control the lamp alone, the live wire into L, L1 or L2 out of the line to connect to the lamp head to grind, the zero line directly connected to another point of the lamp head.

The panel switch is generally composed of a bottom box and a panel, and its main part is the panel part, and the bottom box mainly plays the role of fixing and supporting the panel. With the deepening of people's understanding of electricity, coupled with the gradual attention paid to electricity safety, most of the switches refer to single-control switches.

As the name suggests, a single control switch refers to a single or multiple electrical equipment controlled by a switch, and it has a one-to-one or one-to-many relationship with the electrical equipment.

Nowadays, our common switches are mainly household types of switches, usually in the form of concealed and surface-mounted forms, in terms of their specifications, there are 86 type, 118 type, 120 type, etc., in terms of the number of switch buttons in the same panel, it is divided into single open, two open, three open, four open, etc. Household switches are usually made of metal conductive strips and wiring contacts made of engineering plastics.

At the same time, for the sake of convenience and beauty, people will make various colors of the switch panel, and at the same time, the material on the surface of the panel will be reprocessed, and the aluminum-plastic and aluminum-plastic brushed surface, stainless steel brushed surface, copper surface and so on will be developed on the basis of engineering plastic substrates.

Because often for convenience, put concentrated in a certain place, control a large area of electrical equipment, so people will save space and workload for the sake of saving space, set up a plurality of buttons on a panel to control different electrical equipment respectively, so there are two open, three open, four open and other single control switch panels.

No, the dual-control switch is generally to control the live wire, so the zero line is directly to the lamp, and the general one is not at the position of the switch!

The dual control switch of the neutral line of the fire line realizes the control of one lamp in two places, commonly known as the "double intake" control mode. It should be pointed out that there are safety risks in this type of control.

The dual-control switch has three binding posts: L, L1 and L2, which are used as single control when using as a general light switch.

The lamp wire is connected to L, and the lamp control line is not used.

Four, including one ground wire. It is not safe without a ground wire and cannot be used normally.

Three wires will do, not including the zero line.

It's OK to add two wires between the two switches, and if you don't understand, ask me again, I'm a professional electrical worker.

Summary. Do I need a neutral wire at the end of the dual-control switch of the smart switch? There is no need for a zero line, generally speaking, the dual control switch is to control the electric light, that is to say, only control the live wire, one live wire enters, and the dual control controls two live wires out of money, that is, two light wires, which green line on the general switch is the live wire incoming line, and the red ** is connected to the double control and another control above, that is, the double control controls the red line and the yellow line.

Now the panel switch generally only controls the live wire, in order to use electricity safely.

Do I need a neutral wire at the end of the dual-control switch of the smart switch? There is no need to empty this zero line, generally speaking, the dual-control switch is to control the lamp, that is to say, only control the live wire, a live wire enters, and the dual control Nian Xun controls two live wires to pay money, that is, two light lines, which green line on the general switch is the live wire incoming line, and the red ** is connected to the double control of another control above, that is, the double control loss spring controls the red line and the yellow line. Now the panel switch generally only controls the live wire, in order to use electricity safely.

The whole house light is intelligent, do the two switches of dual control need a neutral line?

Generally not, it depends on your specific situation.