Dual-control switches are very common in our family life. Bedrooms, bathrooms, aisles, etc. are often used. Dual-control switches also bring great convenience to our daily lives, especially the families that need to go upstairs and down. After the dual control switch, the switch light is also more convenient. Although we said that we are responsible for the double-control switch by the electrician, if we have enough understanding of the dual-control switch connection, I think we can better monitor the work. Let's take a look at the connection of the dual control switch with Xiao Bian today for your reference.
What is a dual switch
A dual-control switch is a switch with two normally open and normally closed contacts (ie, one pair). Usually two dual-control switches are used to control one lamp or other electric appliances, meaning that there can be two switches to control the switches of lamps and other electrical appliances, for example, when the switch is turned on downstairs, the switch is turned off after going upstairs. If you are using a traditional switch, if you want to turn off the light, you have to go downstairs and turn off. With a dual-control switch, you can avoid this trouble. In addition, the dual-control switch is also used to control the lamps that require emergency ignition in the emergency lighting circuit. Both ends of the dual-control switch are connected to dual power supplies, and one end is connected to the lamps, that is, one switch controls one lamp.
Dual control switch connection method
Wiring points:
1. One of the double wires must be directly connected to the middle terminals of two dual-connected dual-control switches;
2. The other wire in the dual wire connects the upper terminals (or lower terminals) of the two switches. In the middle, an indirect branch wire is connected to one end of the lamp. The other end of the lamp is connected to the neutral wire.
3. Both switches are fired and connected to the upper terminal (or lower terminal) but not to the middle terminal.
The wiring characteristics of this circuit:
1. A wire in a dual dedicated line, with the middle lead branch line connected to one end of the lamp. (Traditional dual-connected dual-control circuits do not allow branch lines to be drawn in dual dedicated lines)
2, both switches are in the fire line, and can only be connected to the upper terminal (or lower terminal), which makes the lights when the two terminals of the two switches on the zero line measurement voltage is 220v, that is, The pens are all displayed in red.
Dual control switch connection two
This is the method mentioned in physics textbooks, and it is also the wiring method in standard engineering drawings. very common.
Double control switch connection three
Alternative provincial line method (there is a security risk) Although there are theoretically hidden dangers, but in home wiring, this method is often used, wiring, eliminating a lot of workload, and wire. The current copper wire is very expensive. Especially when it comes to contractors and contractors, they use this method of wiring. The provincial line saves money.
Wiring points:
1. The middle terminals of two dual-connected dual-control switches pull a line to connect the lamps to be controlled.
2. The other two terminals of the switch are connected to the fire line and the neutral line (one port is connected to the fire line, and the other port is connected to the zero line). The idea is simple. With a good point of the switch, it will not easily short circuit.
Summary: on the dual control switch we read this article will understand more, on the double control switch connection we also know a lot, if you do not know the installation must ask a professional electrician to help install. Finally, I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
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