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Assuming garage is detached less than 80 ft away. You need a 60 AMP double pole breaker for the 200 AMP house panel, and need to have two spare slots. Additionally you should have conduit in running in ground, and have #4/3 W/ground Stranded cable running to the sub panel. This setup will allow for 110V's and a 220V circuit. Connect the two hots, Red/Black to the Breaker on your servicing the panel. Connect the neutral (White) to the Neutral bus bar along with the Ground wire. Sub panel on detached Garage. Attach the White neutral wire to the Neutral ground bar. Attach the ground to the ground bar on the Sub panel. Pull the permits and have it inspected!

If your house has the wires from the meter going straight into your panel box then you tie the neutral and ground to the same busbar. However;

If you havve a disconnect on the outside of your house then you must separate the neutral andground inside the 200 amp panel box. This is usually prevalent on a mobile home or any time the pnel box you are using is fed from another panel or disconnect.

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11y ago

You would generally use a cable with the necessary ampacity for the maximum load to be handled over the distance from the supply drop to the furthest utilization point. The cable (or conduit) would generally have two hots, a neutral and a grounding conductor.

If the subpanel is in a different building, other rules will determine whether the subpanel needs an isolated neutral bar or its own grounding rod for the grounding bar.

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Q: How do you connect the wires for a 200 amp sub panel to a 200 amp main panel?
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What would happen if a 200 amp breaker is used in a 100 amp sub panel?

There are two things to think about here. First of all a 200 amp breaker will not physically fit into a 100 amp panel. This is so designed because the panel buss is not designed to conduct 200 amps before the current is cut off. A 100 amp rating on the panel is the maximum amount of current that the manufacturer states, that can be handled safely. Second if the 200 amp breaker is in the main panel then everything downstream from that breaker has to be rated for 200 amp conductivity. The wire size will have to be 3/0 from the breaker to the first over current device in the sub panel which will be the sub panel's main breaker. The sub panel can not be a load center but will have to be a combination panel. I doubt that the 100 amp sub panel's main breaker lugs would be large enough to connect the 3/0 cable.


How do you find out how big your main breaker box is?

Simple. Your main electrical panel will have a "main breaker". This will be a two pole breaker, usually at the top of the panel. It will have a number on the breaker "handle" such as 150 or 200. This is the maximum number of amps your panel can supply. Most newer homes, 1975 and newer have a 200 amp service.


200 amp main and would like to add another 100 amp service in another room how can you do this?

If you are doing this you are effectively limiting your main panel to 100 A with normal duty cycles. This can get complicated and an electrician is advised. But basically you have a 100A breaker that would typically be for 220-240 volt service and you would connect to the main of the second panel. The size of the wire between the two panels would have to be sized correctly and you would only bond ground and neutral at the main panel and not the branch panel. You might want to move some of the loads from the main panel to the branch depending on load calculations. If you know what you are doing and have access to a clamp on amp meter you could measure how much of the 200 Amps you are using at the current panel. This can be dangerous, so get an electrician or be careful. <<>> In the trade this is called a sub panel. It is a complicated job in as much as you have to know wire sizes, ampacity of wires and proper electrical workmanship. Such a project should be left to a licensed electrical contractor to take out the proper permits and call for proper inspections. By taking this route it will leave you confident that if any mishaps happen to the installation down the road your insurance company will be behind you 100%.


200 amp electric service Do you ground the meter pan and the circuit panel?

Ground the meter base only if it's a duplex. Otherwise, ground at the main switch or panel.


What is the diameter of aluminum wires and copper wires for AC 200 amp?

The diameter of aluminum wires will be 85 mm squared and copper wires will be 127 mm squared for AC current 200 amp.

Related questions

What would happen if a 200 amp breaker is used in a 100 amp sub panel?

There are two things to think about here. First of all a 200 amp breaker will not physically fit into a 100 amp panel. This is so designed because the panel buss is not designed to conduct 200 amps before the current is cut off. A 100 amp rating on the panel is the maximum amount of current that the manufacturer states, that can be handled safely. Second if the 200 amp breaker is in the main panel then everything downstream from that breaker has to be rated for 200 amp conductivity. The wire size will have to be 3/0 from the breaker to the first over current device in the sub panel which will be the sub panel's main breaker. The sub panel can not be a load center but will have to be a combination panel. I doubt that the 100 amp sub panel's main breaker lugs would be large enough to connect the 3/0 cable.


How do you find out how big your main breaker box is?

Simple. Your main electrical panel will have a "main breaker". This will be a two pole breaker, usually at the top of the panel. It will have a number on the breaker "handle" such as 150 or 200. This is the maximum number of amps your panel can supply. Most newer homes, 1975 and newer have a 200 amp service.


What is the rating of the main circuit breaker of the 60kw power distribution panel?

200 amps


200 amp main and would like to add another 100 amp service in another room how can you do this?

If you are doing this you are effectively limiting your main panel to 100 A with normal duty cycles. This can get complicated and an electrician is advised. But basically you have a 100A breaker that would typically be for 220-240 volt service and you would connect to the main of the second panel. The size of the wire between the two panels would have to be sized correctly and you would only bond ground and neutral at the main panel and not the branch panel. You might want to move some of the loads from the main panel to the branch depending on load calculations. If you know what you are doing and have access to a clamp on amp meter you could measure how much of the 200 Amps you are using at the current panel. This can be dangerous, so get an electrician or be careful. <<>> In the trade this is called a sub panel. It is a complicated job in as much as you have to know wire sizes, ampacity of wires and proper electrical workmanship. Such a project should be left to a licensed electrical contractor to take out the proper permits and call for proper inspections. By taking this route it will leave you confident that if any mishaps happen to the installation down the road your insurance company will be behind you 100%.


Can you swap out your 125 amp panel for a 200 amp panel?

You can but you may need new Service wires ran to your house to support the larger load. You will probably be looking at paying a couple thousand dollars for it.


How do you wire a garage sub panel box from a 100 amp breaker in the house main panel?

you propaly can't sub panel from 100 amp panel. Just not enough amperage to be worth while. i had to up grade t a 200 amp main first and then I was able to take a 60 sub panel from that.


200 amp electric service Do you ground the meter pan and the circuit panel?

Ground the meter base only if it's a duplex. Otherwise, ground at the main switch or panel.


What is the diameter of aluminum wires and copper wires for AC 200 amp?

The diameter of aluminum wires will be 85 mm squared and copper wires will be 127 mm squared for AC current 200 amp.


How much does a 200 watt solar panel cost?

About 200 Dollars


Can you feed a 200 amp sub panel from a 200 amp panel?

Judging by your question I'm going to take a guess and say you should probably not attempt to do this yourself. Nor do I recommend it. That being said. You can either have your service upgraded to 200amp, and install a 100amp double pole breaker and branch it off into a 100 amp sub panel. You could most likely re-use your old panel for the 100 amp sub panel. Or... You could have your new 200 amp panel installed in a different location and your current panel wired into it for 100 amps.


Can a 200 amp breaker be purchased that only occupies 2 slots in the panel - if so where?

No. You can not buy a 200 amp that only occupies 2 slots on the panel.


Can a 150 amp panel be upgraded to 200 amp?

"CAN"? Certainly. But you will need to run a new service cable. You'll need to have your licensed electrical contractor work out the details with your local electrical power company, and get the appropriate permits.