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When buying a distribution panel look for the capacity rating of the bus. There are some panels that have a 100% rating and others that only have an 80% rating. This rating is reflected in the price of the panel. The least expensive panel might not be the right one for your application.
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What should an electrical panel rating be?
Depends on the load. Most residential homes require at the very least a 200 amp service panel.
How many amps does a 100 amp service supply?
A 100 amp service will supply your electrical current needs UP TO 100 amps.When doing load calculations on a 100 amp panel it can only be loaded up to 80 amps.
What is the largest sub panel you can install off from a 60 amp main panel fed by 100 amp service?
If what you state in this question is accurate this is an illegal installation. A 100 amp service can not have any equipment connected to it less that that of the service size. The 60 amp main panel must be a 100 amp panel to be a legal installation.
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.
Can you use a 200 amp subpanel on a 100 amp branch circuit?
Yes you can, but it is all about distribution of the load. You still have a maximum limiting current of 150 Amps. So if you did use 100 amps on the sub-panel that would only leave 50 amps on the main. Since power usage is usually not constant and varies by day and situation, you just need to make sure the load is distributed so you don't start tripping breakers.
Can you use a 100 amp sub panel with a 100 amp main?
Yes as long as the combined current from both doesn't exceed the limit of the main.
What should an electrical panel rating be?
Depends on the load. Most residential homes require at the very least a 200 amp service panel.
Is it OK to have 250 A of breakers in a 100 A panel?
Yes. Many installations have breaker totals higher that the main breaker of the panel. It is worked on a percentage basis. Not all of the breakers will be on at the same time. In a home, on a 100 amp panel the average load is 50 - 60 amps. The 100 amp main breaker is protecting the 100 amp rated panel board. If the load current goes higher that the panel board is rated at, the main breaker will trip to protect the board.
How many amps can be put on a 125 amp service?
You should not load a 125 amp panel any more than 100 amps.
How many amps does a 100 amp service supply?
A 100 amp service will supply your electrical current needs UP TO 100 amps.When doing load calculations on a 100 amp panel it can only be loaded up to 80 amps.
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.
What is the largest sub panel you can install off from a 60 amp main panel fed by 100 amp service?
If what you state in this question is accurate this is an illegal installation. A 100 amp service can not have any equipment connected to it less that that of the service size. The 60 amp main panel must be a 100 amp panel to be a legal installation.
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.
Can you use a 200 amp subpanel on a 100 amp branch circuit?
Yes you can, but it is all about distribution of the load. You still have a maximum limiting current of 150 Amps. So if you did use 100 amps on the sub-panel that would only leave 50 amps on the main. Since power usage is usually not constant and varies by day and situation, you just need to make sure the load is distributed so you don't start tripping breakers.
Do you have to upgrade 60 amp service to 100 amp if you have a 30 amp HVAC unit installed?
Without knowing the sq. ft. area of your house and what appliances you have connected and if your hot water tank is electric it is hard to make an assessment. The average household draws about 50 amps so if you are adding another 30 you will be getting close to the limit of the new panel. Ask for an estimate on the 100 amp panel and then on a 200 amp panel. The labor costs should not be much higher for the larger installation of a 200 amp panel just the materials.
Can 100 amp distribution panel feed a 70 amp sub panel?
Yes they can. As long as the total load of all subs does not exceed the rated capacity of the main breakers, you should be fine, including 80 percent de-rating of any constant loads.
What size aluminum ser cable needed for 100 amp sub panel?
#2 aluminum for 100 amp
