Do Powerline Adapters Have To Be On The Same Breaker?

The powerline adapters can give you a fast internet connection from one room to another even where no Wi-Fi reaches without an ethernet. But, questions arise about whether the powerline adapters work over the same or different circuits. Let’s find it out.

Most powerline adapters indicate they will work the best when you connect them to the same circuit. Powerline adapters sometimes work over a different circuit in the same residence, but they should be on the same leg of power. But some variables differ between the households. 

Many forums have been asking this question, both experienced and beginners. So, this guide will give you a clear concept about whether the powerline adapters can work in the same breaker or a different circuit ring. 

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Powerline adapters and breakers: Understanding the relationship

Powerline adapters connect your computer to the internet and extend your house’s network through the electrical wiring. 

The adapters come in a set of two, which needs to be connected to two different outlets of the same circuit breaker. 

It has one adapter connected to the router and the other in a room where you need to extend the network. 

The breakers are installed inside your house’s main panel to power several devices and protect the electrical system from overloading. 

The powerline adapters use your house’s electrical wiring to transfer data, and this wire runs to the circuit breaker of your panel. 

When you plug in the powerline adapter, it will begin to draw power from the circuit you have connected with it. 

If the adapter draws excessive power from the breaker, the breaker will trip, and the adapter will stop working. 

The adapter will start working after you reset the breaker. 

The quality of your house’s wiring can also affect the powerline adapter. 

If the wires are old or defective, they will interfere with the current flow, reduce the internet speed, and decrease network reliability. 

When your powerline adapter faces an issue, consider checking the circuit breaker to ensure it can handle the current drawn by the adapter or if the breaker is sensitive to the adapter. 

The circuit to which you connect the powerline adapters needs enough power for the adapters to draw. 

Ensure that the adapters are not drawing too much power, and check the wiring condition of your house before you install the adapters to extend the network. 

Breaking down powerline adapters placement: Do they need to be on the same circuit?

Powerline adapters also work better when they are connected to the same circuit. 

Sometimes, these adapters can work in different circuits, but there is no guarantee. 

If they do work, speed will drop every time they cross into a new phase. 

Here are some placement breakdown examples for a clear understanding:

Different houses

The powerline adapters nearly don’t work in different houses, even if the house is next to your house. 

There are exceptions where the powerline adapters may work. But they won’t work as expected. 

So, the powerline adapters have to be in the same circuit breaker. 

Different apartment 

The powerline adapters do not work in different apartments, even if they are in the same building or the apartment has its meter or feed. 

Again, there are exceptions. 

Separately supplied breaker within the house.

It means a part of your home, like the extensions, annexes, or detached buildings, in a single residence fed by separate meters or breaker feeds. 

In such situations, the powerline adapters’ working chance is 50-50, even if each adapter is installed in the parts of the residence and fed by separate feeds. 

Such cases are rare. 

Simply put, if the adapters are in two different places where they feed from separate meters, the powerline adapters will likely not work correctly. 

There are rare situations where the powerline adapters work in different breakers. 

It happens due to the lax wiring and circuitry setup. 

There will be shunts and other devices that can separate the circuits from others between the dwellings. 

Wiring considerations for powerline adapters: Same breaker or Different breaker 

The powerline adapters give you network connectivity with the help of your house’s electrical wiring system. 

They do not need any extra wires for connection. 

Installing powerline adapters in the same breaker works better than installing them in different breakers. 

The adapters perform their best and provide you with fast-speed data transmission.

Installing powerline adapters only work in different breakers if the electrical wiring of the building is interconnected or present in the same phase. 

Installing the powerline adapters in the same breaker

Connecting the powerline adapters in the same breaker improves performance because the signal transmits directly between them without causing any interruption or bridge. 

You will have slow network speed and reduced connectivity if multiple heavy-duty appliances are in the same circuit. 

The heavy-duty appliances draw maximum power from the circuit, so the adapters fail to draw enough power for speedy data transmission. 

So, it is better to leave heavy-duty appliances off the circuit where the adapters are wired. 

Installing the powerline adapters in the different breaker 

Connecting the two powerline adapters in a different circuit gives you a slow network speed because the transmission between the adapters is indirect and interrupted. 

As a result, you have reduced connectivity and a weak signal. 

However, there are conditions where the adapters may work fine, for example:

  • The wiring of the circuit remains in the same phase or is interconnected.
  • The circuits where you have connected the adapters are not connected to any multiple devices or heavy-duty appliances. 

Wiring the powerline adapters in the different circuits is done when you need to extend your network to different locations of your house.

Breaking the rules with powerline adapters: When is it okay to use different breakers?

It is never okay to use powerline adapters in different breakers. 

But some people still break the rule and install them in different circuits.

In most cases, the powerline adapters will not work if installed in separate breakers. 

In contrast, some people have claimed they have not faced any issues while installing them separately in different parts of multiple houses. 

It is said that the powerline adapters do not work across different phases in the same circuitry. 

But in certain circumstances, they do work. 

First, you must understand why the powerline adapters do not work in the different circuits.

Every house contains one heavy appliance with 230V. 

Due to this, the breaker will cross the legs or phases and bridge the red and black sides of the electrical panel. 

Due to this bridge across both phases, the powerline adapters don’t work well. Even if it does, the speed will be prolonged. 

It happens if your house is big and contains multiple panels and circuits. 

For example, suppose you have two 200 amp electrical panels with separate feeds to the utility pole and separate meters. 

In that case, the powerline adapters in different locations do not work. 

The bridge created will be at the pole transformer. 

If the powerline adapter works slowly, by chance, there are shunts (rarely present) to prevent this bridge formation. 

The powerline adapters will also not work if the circuit powering them is connected to the subpanel from the main panel. 

However, there are situations where it is acceptable to connect the powerline adapters in different circuits, involving variables that differ from house to house based on the electrical wiring: 

  1. You can use the powerline adapters in separate circuits and send the data from one phase to another using another appliance that crosses over between the different phases of the house circuitry, like an intermediary bridge. 
  2. Another situation where the powerline adapters can work across different circuits is if the electrical wiring is present in the same phase or interconnected. For example, you can connect one powerline adapter to the downstairs and another to the upstairs. 
  3. Suppose the wiring in both circuits is acceptable and suitable for the adapters. In that case, you will see communication between the two adapters in different locations. You should avoid using extension leads with surge protectors to use such a setting. Otherwise, you will face issues.
  4. The powerline adapters will work fine without interference in different circuits if they don’t have too many devices or heavy-duty appliances. 

Such conditions are not guaranteed; thus, using powerline adapters in different circuits is almost not fine. 

I once installed powerline adapters in my home separately – one upstairs and the other downstairs. 

The circuits were not much loaded and were in the same phase. But still, I had issues with the network speed. 

I installed them in the same circuit recently, and now everything looks fine.

You should always contact a professional before separately installing the powerline adapters.

Circuit compatibility and powerline adapters: What you need to know?

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When you use powerline adapters in your house, you have to connect them to a circuit through which they can draw power. 

Before connecting the adapters, you should ensure the circuit and the powerline adapters are compatible. 

Here are some factors you need to consider to make the breakers compatible with the powerline adapters:

Electrical system 

Powerline adapters use the electrical wiring of your house to transfer the data. 

Some circuit types may not suit the powerline adapters. For example, the old electrical system switches knob-and-tube, or aluminum wiring will not work with the powerline adapters. 

The newer circuit types are compatible with these adapters.


If your house has an old and poorly maintained electrical system, it won’t work with the powerline adapters. 

You will receive a passive network speed or intermittent connectivity even if it works. 

You can upgrade your electrical system and install the powerline adapters to improve their compatibility and performance. 

Electrical system wiring 

The circuit’s wiring should be capable enough to carry the power drawn by the powerline adapters. 

If the wiring is old, it won’t be able to carry power drawn by the adapters for a high-speed data transfer. 

Circuit type

There are multiple types of powerline adapters, and all won’t work with the circuit breakers. 

For example, the powerline adapters will use a different frequency range than the other devices. 

So, the circuit you use for these adapters should be able to handle the frequency range they use. Check the adapter’s features to receive a compatible breaker.

Check the compatibility 

Before you finalize the connections, test the circuit breakers with the powerline adapters to check their compatibility. 

Plug the adapter, connect it to the network devices, and test its speed and stability. 

If the performance is as expected, you can use the breaker for your adapters. 

Otherwise, find a suitable one. 

The role of breakers in powerline adapter performance: Tips for optimizing your setup

The powerline adapters transmit the data signals without extra wiring through the electrical lines used to run electricity. 

The electrical wires of the houses are used as a transmission source, which further needs a breaker. 

A breaker has a significant role in the powerline adapters. Below are some of its essential roles:

  • The breakers help the powerline adapters to reduce interruption and noise in the current lines. 
  • The breakers are like filters that remove extra signals and provide you with the necessary signals to pass through the adapters. 
  • The breakers connected to the powerline adapters divide the electrical lines into 2 separate frequencies – high-frequency and low-frequency signals. The high-frequencies are used to transmit data, and the low frequencies are used to transfer electricity. 

The breaker type can impact the performance of the powerline adapters, especially if they are incompatible with the adapters. 

Here are some tips to optimize the setup:

  • The powerline adapters may work in different circuits but are best on the same circuit. So, refrain from installing them to separate circuits. 
  • Use high-quality powerline adapters for better performance. 
  • Ensure the breaker has enough capacity to allow the powerline adapters to draw current for high-speed data transmission. 
  • Noise can affect the adapter’s performance. So, avoid using electrical devices with loud noises near the powerline adapters. 
  • Use adapters with the latest technology, for example, HomePlug AV2. 
  • Ensure that the adapters’ circuits are not overloaded with too many appliances.
  • Plug the powerline adapters directly into the wall outlet instead of using extension cords or power strips. 
  • Keep a short distance between the adapters. Ensure the circuit you use for them has proper space to provide the correct distance between the adapters.

Pros and cons of powerline adapters: Best practices for placement 

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Powerline adapters provide an internet connection with your house’s wiring without any extra wire connection. 

Though helpful, the powerline adapters will have pros and cons.


  • You can easily plug them into an outlet and press a few buttons to activate the network connection. 
  • Powerline adapters can provide you with faster and more stable connections than Wi-Fi and are helpful for devices like computers and laptops.
  • You do not have to install or wire it separately. It will use the electrical wiring of your house. As a result, you can move them around according to your advantage. 
  • Since powerline adapters are better than Wi-Fi, the Wi-Fi demands are low. Every device you connect to the adapters can free up the wireless capacity for the other hardware. 


  • Since the adapters come in pairs, they use two sockets for network connectivity. The devices are bulky and hide the adjacent plugs.
  • The powerline adapters will need to be connected to a single circuit. You can put them in two different circuits, but the speed will be slow. Summerhouses use separate circuits, and old houses have different circuits on each floor. So, installing them in the same circuit can be tricky.
  • Powerline adapters can slow down when other electrical devices use the same circuit to draw power. 
  • With these adapters, you cannot use extension leads, surge protectors, and power strips. 
  • Though the powerline adapters are better and faster than the Wi-Fi connections, the performance is always low compared to the hardwired Ethernet cable. 

Best placement practices

Powerline adapters can deliver better performance if everything is as per their requirements.

To improve their performance, here are some best placement practices:

  • Even though they work in different circuits, it is better to let them stay in the same circuit for their best performances. 
  • Do not use surge protectors or power strips. Plug them directly into the outlet for reduced interference and increased connectivity. 
  • Avoid connecting loud noises to the adapters’ circuit, for example, refrigerators, washing machines, and air conditioners. These devices can make noise and draw too much power, thus interfering with the powerline signals. 
  • For the best internet coverage, use a central location of your house so that every corner of your house receives the powerline signals. 
  • Do not use a random outlet for plugging the adapters. Try outlets in various locations of your house, then stick with one outlet that provides adequate signal without interruption. 
  • Keep the powerline adapters away from television and radios. They can also interrupt the powerline signals and slow down the speed.

Powering up your network with powerline adapters: How to optimize the performance with breakers? 

Using powerline adapters enhances the network connectivity and data transmission speed without running any wires. 

To power up and improve the performance of the powerline adapters with breakers, follow the following tips:

  • For the best performance, high-quality powerline adapters transmit high-speed data and contain advanced features like noise filters and error correction. HomePlug AV2 is an advanced version of HomePlug AV.
  • Keep the powerline adapters away from noisy devices to prevent interruption in the network.
  • Avoid installing the powerline adapters to the different breakers. You will receive fast network connectivity. 
  • Do not connect the powerline adapters to the breakers with surge protectors. It will interrupt the network performance, reduce the high-frequency signals, and cause slow and intermittent speed. 
  • Plug in the adapters directly to the wall outlets. Avoid using any power strips or extension cords.
  • Avoid interference by wiring too many heavy devices to the adapters’ breaker, such as refrigerators, air conditioners, and washing machines. 
  • The distance between the two adapters should be a manageable length. The maximum distance is 300 meters, but it is hard to reach such distances due to the interference and line quality. 
  • Firmware updates can improve the network speed and fix bugs. Check the manufacturer manual of the adapters before buying and see if there are firmware updates.
  • Standardize your in-home powerline network. The weakest link determines the maximum speed. If you have two adapters with different speeds, the best rate will reach the slowest. So, install and match the adapters with similar networks to standardize the in-home network. 
  • Use a network test tool to ensure that the adapters can genuinely improve your network and increase the speed. If the speed seems slow, use a different outlet or a circuit. 

Final thoughts 

Powerline adapters can connect your computer to the internet with the help of your house’s electrical wiring system. It won’t require any extra wiring connections. It is always recommended to install the powerline adapters to the same breaker. It increases their performance and speed without any interference. 

The adapters have poor performance if you install them on different breakers. Even if they do, the speed and connectivity reduce to a great level. However, there are circumstances where you can break the rule, for example, installing them to different circuits wired to the same phase and not loaded with too many devices. 

Still, I recommend installing them on the same circuit breaker. To improve the powerline adapters’ performance, use high-quality adapters, use compatible breakers, try using noise filters to reduce noise, and always install them in the same circuit. 

How do I enjoy a fast connection with the powerline adapters?

Use high-quality powerline adapters with advanced technologies and high-speed connectivity from a reputed manufacturer, install them in the same circuit, and avoid interference.

How can I check the connection status in the powerline kit?

Some powerline adapter kits come with connection status features. They have an LED indicator where you can view the connection status of your adapters.

Reference: Powerline Adapter Wikipedia 

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Arthur Smith

Howdy! I am Arthur Smith, an electrical engineer who is extremely passionate about electronics. I have lived in different parts of the US and currently reside in Wisconsin. I am one of those rare children who knew what he wanted to study and do in life right from the start. I was a curious child who wanted to know how switches work and how the AC works, and I would always observe my dad whenever he would handle the wires and fix things around the house. I currently work as an electrical engineer at a reputed company and write for this blog. And I read loads of books or play video games in my free time.

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