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It is not in parallel. You put a breaker in existing panel and use that to feed the subpanel. The Amperage of this subfeed breaker should match the rating of the new panel. For example a 100A breaker might be typical. Remember that ground and neutral are only "bonded" at the main panel. Usually a subpanel has a means to separate the neutral and ground in a subpanel. Be careful since everything about doing this is dangerous.

Another Answer

Yes, you can have two breaker panels in parallel. If you had a 100 amp panel on a 200 amp service (or increase the size of the service, check with your power company on the size of your service, you could add a second 100 amp panel in parallel with the first. You can have up to 6 disconnects per service, but they must be located adjacent to each other or in the same enclosure. So either install the second panel beside the first or a 100 amp disconnect beside the first panel and feed out of the disconnect to the new panel located where you need it.

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Q: Can you run an additional breaker panel parallel to the existing one?
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Can a Siemens breaker push on be a replacement breaker for a Westinghouse breaker?

only if listed in the panel board


How many 20 amp double pole breakers can go into a 100 amp panel?

The provisioning of the breakers in a panel has a physical limitation regarding how many breakers will fit and a load calculation based on what devices the panel has to support. Your question really applies to both types of breakers. There are rules of thumb for sizing and populating the panel. This information is in the National Electric Code. If you have an existing panel and a new application requiring additional breakers for 220 Volt applications, the current draw in panel can be measured by an electrician and you will know what additional load you can support. If breakers fit physically in the panel, but connected devices exceed the total current capacity you will trip the main panel breaker. At this point you would need to get an electrician involved.


Breaker box is full?

You have two options, one is a complete service change. The average house service these days is 200 amps 42 circuits. The second option is to install a sub panel off the existing service. Depending on how many circuits you need will govern the size the sub panel. Here is where it gets tricky. Two side by side single pole breakers or one two pole breaker will have to be removed from the original service panel and replaced with a new two pole breaker. The size of this breaker will be governed by the total load of the new sub panel. The wire from the new sub panel to the two pole breaker is also governed by the load of the sub panel. As an electrician I would recommend that you not do it yourself but get a qualified electrician to do it for you. He would (should) take a permit out for the job and get it inspected.


What are the dangers of pigtail surge protector?

Answer for USA, Canada and countries running a 60 Hz supply service.There are no dangers to using a pigtail surge protector. The installation of the protector must be done correctly though. The pigtails must not be installed on an existing circuit that has an existing load on it unless the breaker is approved for more than one circuit load on it. The protector must use a new two pole breaker with no additional load on it except the surge protector. This is the correct procedure to connect a pigtail surge protector to a distribution panel board.


If an electrician have a circuit that pulls a load of 10 amps what size breaker must that circuit be protected by?

If you are talking about a breaker in a house panel then a 15 amp breaker would be used. It is the smallest amperage breaker that you will find in a house panel.

Related questions

When do you know if you need an electrical service upgrade?

1) If you are tripping the main breaker and you do not have an electrical fault in the home. 2) If you are installing additional circuits or appliances and you expect to exceed 80% of the load capacity of the existing service panel.


What type panel does a 4 pole breaker require?

The panel and breaker have to be of the same manufacturer. This way the breaker will fit into the panel. If the panel has a push in bus bar, the breaker must also be the type to accept the bus bar. If the bus bars in the panel are of the bolt in type then the breaker also has to be a bolt in breaker.


Can you downgrade from a 125amp main breaker to 100 amp breaker using the same box?

You can reduce the breaker size because that limits the current that can reach the main panel. There is no safety issue other than the significant danger in an unskilled person changing out a main breaker.


Can you put a 60amp breaker and a 50amp breaker on a 60amp subpanel just as long as they are not being used at the same time?

You can. Using these size breakers in a 60 amp sub panel might be pushing the limit for breaking the sub panels feeder breaker. The breaker feeding the sub panel will have to be no bigger than 60 amps because of the main bus bar capacity of the sub panel. It would be better to install a 100 amp sub panel and then there would be a bit of a buffer and you will have the ability to add additional small load circuits.


What is needed to put a 240V outlet in a garage very close to a circuit panel with NO open slots available?

an electrician. you may have to upgrade your service if not you will need an additional box to accomodate the new breaker Assuming you meet local code and license requirements, and know how to shut things off while you're working: The full circuit panel may be a service panel or a sub-panel with main lugs only (no main disconnect). If it's a sub-panel you need to find the breaker that feeds it from the service panel (if any) to make sure it has enough ampacity to run your 220 appliance on top of whatever is there already. Assuming the breaker and feeder conductors will support the additional load, you can add another subpanel (or replace the existing subpanel with a larger one). If not, you can wire a completely new feeder from the service panel to a new subpanel (or just a 220 disconnect/fuse for your new appliance). If the wiring is old, the minimum disturbance to the existing wiring is recommended: put in a new circuit from the service panel. Some subpanels include extra main lug terminals for feeding other subpanels. Otherwise you can either add another tap to the main lugs and run them to the new subpanel, or else replace two of the existing breakers with a 2-pole breaker that feeds the new subpanel. Put the new 220 circuit into the new panel along with the two old circuits removed from the old full panel to make room for the subfeed breakers.


What is installing a circuit breaker?

It is inserting a breaker into a service panel.


Will Square D QOT breakers fit into QO panels?

A Sq D QOT breaker is a tandem breaker usually used in home retrofits. It will fit into a QO distribution panel but only in certain positions having a mounting pan rail slot. See related links for more information.Probably not. Take out an existing breaker and compare. If you don't know how to safely take out an existing breaker, you shouldn't be messing with a replacement anyway.


Can a Siemens breaker push on be a replacement breaker for a Westinghouse breaker?

only if listed in the panel board


Will cutler hammer breaker panel fit a GE breaker?

No, a Cutler Hammer will not work in a GE panel or vice versa.


How many 20 amp double pole breakers can go into a 100 amp panel?

The provisioning of the breakers in a panel has a physical limitation regarding how many breakers will fit and a load calculation based on what devices the panel has to support. Your question really applies to both types of breakers. There are rules of thumb for sizing and populating the panel. This information is in the National Electric Code. If you have an existing panel and a new application requiring additional breakers for 220 Volt applications, the current draw in panel can be measured by an electrician and you will know what additional load you can support. If breakers fit physically in the panel, but connected devices exceed the total current capacity you will trip the main panel breaker. At this point you would need to get an electrician involved.


Breaker box is full?

You have two options, one is a complete service change. The average house service these days is 200 amps 42 circuits. The second option is to install a sub panel off the existing service. Depending on how many circuits you need will govern the size the sub panel. Here is where it gets tricky. Two side by side single pole breakers or one two pole breaker will have to be removed from the original service panel and replaced with a new two pole breaker. The size of this breaker will be governed by the total load of the new sub panel. The wire from the new sub panel to the two pole breaker is also governed by the load of the sub panel. As an electrician I would recommend that you not do it yourself but get a qualified electrician to do it for you. He would (should) take a permit out for the job and get it inspected.


What size breaker do you use for a 100 amp sub panel?

A 100-A sub-panel would be fed from a 100-A breaker.