Why are lights in a house connected parallel?

Household appliances and lights have an electrical source connected through a basic circuit. A typical circuit consists of an electrical source, conducting wire, a light or any other appliance, and a switch. The electrical wiring configuration is either in series or parallel, and each design has its own pros and cons. 

The question is: why lights are connected in parallel in your house? House wiring usually uses parallel configuration because it supplies electricity from one source to multiple lights. Thus, it allows the electricity to flow through the circuit properly even if one light or more lights fail. 

In contrast, some lights, such as those used on Christmas, are connected in series. The lights will continue working if they receive electricity from a power source. However, lights connected in series often undergo problems. For example, if one light burns out, it will fail the entire string. Because house wiring is not open, lights and other appliances are connected in parallel. Read on!

Why is Parallel Arrangement best for House Lights?

Everyone knows that a house has many electrical appliances, electronic gadgets, and lights. Each appliance or light need to run independently and not affect the functionality of one another. For example, if you turn “ON” your bathroom light, it may not turn “ON” or “OFF” your room’s light. 

On the other hand, the series arrangement will do the opposite – i.e. turning “ON” one light will cause other lights “ON” in your house. Technically and logically, this does not make sense. 

Lights connected in a parallel configuration means you can use each of them independently. Thus, the parallel design is an essential feature of house wiring. In contrast, series configuration leads to variation in electricity supply and resistance of lights. 

As a result, some lights would not receive enough electricity to illuminate. When the power does not flow through the light properly, it affects the fixture’s internal structure and causesdamages. 

That’s why lights arrangement in series are prone to damages and can cost a homeowner a lot of money. Experts discourage this type of configuration for house wiring and lights. However, you can use the series arrangement for fairy lights on special occasions, such as Christmas. 

Keep in mind that parallel configuration supplies an equal amount of electricity to each appliance or light from the power source. Thus, it prevents electrical fluctuations and allows the lights to function independently.

Final Words 

As mentioned above, two types of wiring configurations are series and parallel. The first one is often regarded as a voltage divider, and the second one is an independent voltage connector. The voltage across each light is the same in a parallel circuit, which means the total power is the sum of electric currents flowing through each light or appliance. 

On the other hand, the series configuration requires each light to function properly to complete the circuit. If one light burns out, it will break the entire circuit. Lastly, the parallel design is anenergy-efficient and cost-effective solution.