How to wire the lights in parallel:?

How to combine Lights Points in parallel?

The common domestic circuits used in electrical wiring installations are (and should be) parallel. Often, switches, outlets, receptacles, and light points, etc., are connected in parallel, if one of them fails to maintain the power supply to other electrical appliances and devices through hot and neutral wires.

In our today’s Basic Electrical Wiring Tutorial, we will show how to wire parallel lights.

How-To-Wire-Lights-in-Parallel

In the above fig, it is clearly shown that all light bulbs are connected in parallel i.e. each bulb is connected by separate line (also known as live or phase) and neutral wire.

In a parallel circuit, adding or removing one lamp from the circuit does not affect other lamps or connected devices and devices because the voltage in the parallel circuit is the same at each point but the flow current is different. In this type of circuit, any lighting point or load can only be added (according to the circuit or sub-circuit load calculation) by extending the L and N conductors to other lamps.

As each lamp or bulb is connected separately between line L and neutral N, if one light bulb is defective, the rest of the circuit will function smoothly as shown in fig below. Here, you can see that the line connected to lamp 3 has a cut in the wire, so the bulb switch is off and the rest of the circuit is working properly ie the bulb is dimming.

Faults-in-Parallel-lighting-circuits

Also, if we control each lamp through a single way (SPST = single pole single throw) in a parallel lighting circuit, we can turn on each bulb with a separate switch or if we turn off the bulb, the remaining lighting points will not be affected because it Only in the series lighting connection where all connected loads will be disconnected if we switch off.

Light-Bulbs-Connected-in-Parallel

How to control a light bulb with a single way switch in parallel lighting?

Below the fig, we controlled three light bulbs from three separate single way switches connected between the line and the neutral wire. The first two bulbs are shining because the switches are on the position while the third one is off the bulbs.

How-to-control-each-lamp-separately-by-single-way-switches-in-parallel-lighting-circuits

Advantages of Parallel Lighting Circuits:

• Each connected electrical device and device are independent of the other. This way, turning the device on / off will not affect other devices and their operation.
• In the case of a break in the cable or the removal of any lamp, not all circuits and connected loads will break, in other words, other lights / lamps and electrical appliances will still work smoothly.
• If more lamps are added to the parallel lighting circuit, it will not decrease the luminosity (as it only happens in a series of electrical circuits). Because the voltage at each point in the parallel circuit is the same. In short, they get the same voltage as the source voltage.
• Unless the circuit is overloaded, it is possible to add more light fixtures and load points to the parallel circuit as needed in the future.
• Adding additional equipment and components will not only increase the resistance but also reduce the overall resistance of the circuit, especially when using high current rating devices such as air conditioners and electric heaters.
• Parallel wiring is more reliable, safer and easier to use

Advantage-of-parallel-circuit-connection-over-series-connection

Disadvantages:

• Parallel lighting wiring circuits use more size cables and wires.
• More current is required when additional light bulbs are added to the parallel circuit.
• Battery is fast running for DC installation.
• Parallel wiring design is more complex than series wiring.

Information to know:

• The switch and fuse line (live) must be connected by wire.
• Connecting electrical devices and devices such as fans, outlets, light bulbs, etc. in parallel is the preferred method of replacing series wiring.
• Parallel or series-parallel wiring method is more reliable than series wiring