How to Wire Light Fixture and Switch

How to Wire Light Fixture and Switch – Sharing Experts

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Nowadays, households are oriented towards convenience and usefulness for their home, and how to control the lights in the house is a must.

In this article, we will help you learn more about wiring and switching, civil circuits for a home so you can optimize your space.

Some notes when connecting electrical circuits

  1. For multi-story households, the switch box on the middle floor is usually a box that can install 2 eyes of the 3-pole switch, when installing, the reader should install the switch on and off the stairway light on the right, the next floor light switch. follow the left-hand side.
  2. In addition to conventional mechanical switches, on the current market, there are 3-pole touch switches that automatically turn lights on and off when someone is present. However, these types of switches usually only work well in the beginning.
  3. When connecting the wire to the 220VAC grid, the power should be disconnected first, using the electric tester to check and wear insulation gloves to ensure safety.

How to Wire Light Fixture and Switch

https://www.youtube.com/watch?v=CaaLw01fMo8&ab_channel=TheEngineeringMindset

The way to wire and switch the power for 3 bulbs to the same switch is quite simple, the first steps are done like how to connect a switch to a light bulb.

The principle of this connection is that when the switch is activated, the fire will pass through the switch to the first light bulb wire to cool down the wire, thereby making the number one light bulb light.

Next, the fire will follow the circuit to be connected and switch from the previous to go to the 2nd bulb, where the filament also returns to cool down to make the second bulb light, then go on to the 3rd bulb and operate. act like the previous two shadows.

When you close the ceiling and install the light for the ceiling, you will have a wire step to connect to the light switch, the end of the filament will be the one that directly contacts the light bulb, here we start with the steps. wiring.

  • Step 1: You need to strip the terminals of the terminals and the wires of each bulb about 1-2cm to connect the main part.
  • Step 2: Connect the first light bulb with 2 ends of the power cord, when playing to ensure safety and quality, you should use clamps to match more firmly.
  • Step 3: Stick the glue to the match

For the remaining balls, you also perform the same 3 steps above. After we have finished wiring the entire light bulb, we begin to connect this power cord with the switch to bring them back to one.

This is very simple, you just need to connect the wire of the terminal and the socket wire to the right position for it in the switch and the cold wire does the same, so you can control 3 bulbs together. a switch.

The advantage of this parallel wiring is that when one of the above bulbs burns, it does not affect the remaining bulbs, they will still light as usual.

In this way, we will connect the light wires,

  • Step 1: Use the hot wire to match one leg of the switch
  • Step 2: The other leg of the switch will supply the hot wire for the first leg of the first light.
  • Step 3: The other leg of the first light will provide a hot wire for the second lamb’s leg.
  • Step 4: One leg of the 3rd lamp will be supplied with a hot wire from the other leg of the 2nd lamp
  • Step 5: And finally the cold wire will be connected to the last pin of the 3rd light.

We can see, this is a closed circuit so the current will flow in a circle to light up the bulb. This way of connecting and switching is connected in series from one bulb to the other, so during the operation, if one bulb burns and doesn’t light up, the other bulbs will also not work.

The basic circuit of lamps in civil electrical circuits

The household electrical circuit diagrams are used in almost all of our homes, whether you have a grade 4 house or a 5-star hotel, you also rely on these basic circuits to install the projection system morning for home, room …

To control the light bulb, we connect the bulb in series with 1 switch

Condition: The rated lamp voltage must be greater than or equal to the voltage of the power supply: U Light = UN power

Consists of a power supply, switch, socket, and many lamps connected in series

Condition

The lamps shall be incandescent.

UL1 + UL2 + ULi +…. + ULn = U source

UL1 = UL2 = ULi =…. = ULn

PL1 = PL2 = PLi =…. = PLn

The staircase light circuit is used to control turning off and on a light bulb in 2 different positions. There are 2 commonly used schemes as follows:

Principle of operation diagram 1:

When the two ends of the bulb are connected simultaneously with 2 hot wires (or two cold wires), the voltage difference between the two ends is zero => the bulb turns off.

And when one end of the bulb is connected to a hot wire, the other end is connected to a cold wire, the voltage difference between the two ends is 220V => the light bulb is on.

Diagram 1 needs to use 2 fuses to protect the bulb. This scheme is usually applied when the distance between the two switches is large.

Principle of operation diagram 2:

Just use 1 fuse to protect the bulb. Diagram 2 is used quite commonly.

Light circuit, dim light

Operation principle:

  • State 1: Lamp 1 and Lamp 2 are connected in series, then the 2 lights will dim.
  • Status 2: Light 1 is connected, only light 2 is on.
  • Switch S1 is used to turn off the circuit.

Alternating light circuit

Operation principle:

  • Status 1: Light 1 is on and light 2 is off.
  • Status 2: Light 1 is off and light 2 is on.
  • Switch S1 is used to turn off the entire circuit.

Two lamps 1 and 2 are two lamps of different types, or with different capacities.

The circuit consists of 2 3-spoke switches and 2 incandescent lamps.

The lamp circuit operating states.

  • State 1: L1 clear, L2 off (Switch 1 – 1, Switch 2 – 2).
  • Status 2: L1 is off, L2 is illuminated (Switch 1 – 2, Switch 2 – 1).
  • State 3: L1 and L2 are dim (switch 1 – 1, switch t2 – 1).
  • Status 4: L1 and L2 off (Switch 1 – 2, Switch2 – 2)

The lights are turned on and off in a certain order, at a time only one light bulb turns on. Apply when needed to save, avoid forgetting to turn off the lights

Operation principle:

  • Switch S1, light 1 is on.
  • Switch S2 is on, light 1 is off, light 2 is on.
  • Switch Si on, light 2 off, a light I on.
  • Sn switch on, a light I off, light n on.
  • When turned off, the sequence is reversed.

Principle of installing electrical circuits using braces and conduits

Principle of installing electrical circuits using braces and conduits. The use of braces and conduits when installing home electrical systems is now too common from urban to rural areas because the benefits it brings outweigh the economic value of the investment.

Workers and engineers have synthesized the following benefits:

  1. Anti-electromagnetic interference (external interference on the wiring … affects the power quality)
  2. Impact protection for electrical conductors (the rigid shell of the brace and the tube resist external forces, preventing the wire from breaking, stamping …)
  3. Used as a grounding for electrical equipment (with metal pipes and braces, they are used as a very good grounding electrical path)
  4. Low coefficient of expansion (The materials that make the pipe and splint materials have little elasticity, the space in the pipe is wide to prevent the wires in the tube from getting tight when the temperature expansion does not affect the structure. wall)
  5. Impact resistance, corrosion resistance, corrosion resistance from insects and rodents (protected in the tube and sturdy brace … helps the wire not have direct contact with the outside environment)
  6. Steel tube with wire thread is fire resistant (with steel pipe it also makes your construction safer)
  7. Easy to change and move electrical wires (because wires are placed in braces and pipes with a large diameter, the wire does not occupy all of the pipe areas, so when needed, we still have space to remove and move wires)
  8. High strength – low life cycle cost (with good quality, most constructions need only one brace and hose system installed)
  9. Completely reusable (with large tubes, big splints when not in use they can be reused and so on)

When you close the ceiling and install the light for the ceiling, you will have a wire step to connect to the light switch, the end of the filament will be the one that directly contacts the light bulb, here we start with the steps. wiring.

  • Step 1: You need to strip the terminals of the terminals and the wires of each bulb about 1-2cm to connect the main part.
  • Step 2: Connect the first light bulb with 2 ends of the power cord, when playing to ensure safety and quality, you should use clamps to match more firmly.
  • Step 3: Stick the glue to the match

For the remaining balls, you also perform the same 3 steps above. After we have finished wiring the entire light bulb, we begin to connect this power cord with the switch to bring them back to one.

This is very simple, you just need to connect the wire of the terminal and the socket wire to the right position for it in the switch and the cold wire does the same, so you can control 3 bulbs together. a switch.

The advantage of this parallel wiring is that when one of the above bulbs burns, it does not affect the remaining bulbs, they will still light as usual.

*** Refer to more article: https://www.familyhandyman.com/project/how-to-install-surface-mounted-wiring-and-conduit/

In this way, we will connect the light wires,

  • Step 1: Use the hot wire to match one leg of the switch
  • Step 2: The other leg of the switch will supply the hot wire for the first leg of the first light.
  • Step 3: The other leg of the first light will provide a hot wire for the second lamb’s leg.
  • Step 4: One leg of the 3rd lamp will be supplied with a hot wire from the other leg of the 2nd lamp
  • Step 5: And finally the cold wire will be connected to the last pin of the 3rd light.

We can see, this is a closed circuit so the current will flow in a circle to light up the bulb. This way of connecting and switching is connected in series from one bulb to the other, so during the operation, if one bulb burns and doesn’t light up, the other bulbs will also not work.

*** Refer to more article: https://www.oreilly.com/library/view/home-networking-the/059600558X/ch04.html

Installation of electrical circuits with flexible round pipes includes the following steps:

Step 1: Locate the tube

  • Correctly locate devices: socket switches, lights, fans
  • Determine the path of the wire
  • Select the pipe size to go

Step 2: Put the wire into the tube

  • Determine the exact number of conductors needed in the tube
  • Put all of those wires into the tube
  • Place the tube on the marked plan
  • Use the nail to close the cover ring to keep the tube

Step 3: Finish Check for a short circuit or not.

Conclusion

As can be seen, the way of wiring and switching power is not too difficult when you are hard to learn, but it is important to equip yourself with carefully protective gear to avoid electrical problems. !

Refer to more useful article of LaoKoon Design:

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