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How to Control Each Lamp by Separately Switch in Parallel Lighting Circuit?

Controlling of Each Lamp by Independent Single way Switch in Parallel Lighting Circuit?

In today basic home electrical wiring installation tutorial, we will show how to wire and control each lamp independently by using separate single way switches in parallel lighting connection.

Below is a simple step by step tutorial with schematic and wiring diagram which shows how to wire three different light bulbs in parallel to control from three different and independent switches and locations?

Requirements:

  • Single Way Switches (SPST = Single Pole Single Through) x 3 No
  • Lamp (Light Bulb) x 3 No
  • Short pieces of cables x 11 No

Procedure:

Connect all the wiring connection as shown in fig below.

How to control each lamp separately by single way switches in parallel lighting circuits
How to control each lamp separately by single way switches in parallel lighting circuits
  • The first and second Lamps are glowing, because both the separate switches S1 and S2 which are connect to the bulbs through Line are at ON position and so the circuit is completed.
  • The third Lamp is OFF, because switch S1 which is connected to light bulb through Line is OFF, so the circuit behaves like an open circuit meaning there is no way to flow the current in the circuit. Hence, bulb is not glowing

Related Post: Staircase Wiring Circuit Diagram – How to Control a Lamp from 2 Places by 2-Way Switches?

Now consider the following schematic wiring diagram. It is the same circuit as shown above but the switches and light bulb postpones just reversed i.e. S1 and S2 are at OFF positions, so Lamp 1 and Lamp 2 are OFF while S3 is ON and Lamp 3 is glowing.

Light Bulbs Connected in Parallel
Light Bulbs Connected in Parallel

Good to know:

  • Switches and fuses must be connected through line (Live) wire.
  • Connecting electrical devices and appliances like fan, outlet, light bulbs etc in parallel is a prefer way instead of series wiring.
  • Parallel or series-parallel wiring method is more reliable instead of series wiring.

Warning:

  • Electricity is Our Enemy, if you give it a chance to kill you, Remember, they will never miss it. Please read all caution and instruction while doing this tutorial in practical.
  • Disconnect the power source before servicing, repairing or installing electrical equipments.
  • Never try to work on electricity without proper guidance and care.
  • Work with electricity only in presence of those persons who has good knowledge and practical work and experience who know how to deal with electricity.
  • Read all instruction and cautions and follow them strictly.
  • Doing your own electrical work is dangerous as well as illegal in some areas.Contact the licensed electrician or the power supply company before practicing any change in electrical wiring connection.
  • The author will not be liable for any losses, injuries, or damages from the display or use of this information or if you try any circuit in wrong format. So please! Be careful because it’s all about electricity and electricity is too dangerous.

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One comment

  1. Good day sir,
    I would like to know what will happen when the life wire charging the ups fail if there is power supply from the grid, what i mean is that if the power is supplied from the grid and from ups at the same time . what is going to happen if the power is supplied from 2 sources at the same time.

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