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a circuit breaker trips on overload,if this breaker has tripped many times it may be worn out,if there is a overload happening the breaker is doing it s job keeping you safe.Main breaker needs to be replaced when your meter has been pulled(removed from metersocket)Have a electrician look at it and verify problem, you should not attempt to change out yourself it will be live.......
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RafaThe main breaker switch for a home is usually located in a breaker box attached to a side wall outside the home. The breaker box is usually situated about 5-6 feet up the wall and is usually gray. The main breaker switch will be in that box. Open up the breaker box by pulling on the front bottom or side of the breaker box door. The main breaker switch is usually located near the top of all the breakers and is usually the largest. Also, it may be named, "Main".
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In Canada the main service disconnect is on the inside of the home, which is a more secure position so that the home can not be shut off by anyone from the outside of the home. There are two types of disconnects, one being a free standing switch that is fed from the outside meter base. These types of switches are not used much any more due to the cost factor. It usually contains fuses as an overload protection for the service. The second type of disconnect is contained within the branch circuit panel. This type of installation is known as a combination panel which housed both the main breaker and the branch circuit breakers. The top of the combination panel still obtains its feed from the outside meter base.
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What is the switch on a overload?
to protect the source from overloading a switch can be opened as a circuit breaker, fuse, overload protection schemes
Can you use a Circuit breaker as a switch?
Yes. But by constantly throwing the breaker handle back and forth will eventually loosen the mechanical parts inside the breaker to the point where the breaker will fail. There are breakers made for the purpose of switching, usually used in big warehouses to shut off banks of lights. The price of one breaker is probably equal to the price of about 10 standard light switches.
Is the main circuit breaker is a sum of the sub circuit breaker?
Typically yes because that is what makes sense. However, the subpanel could have the same size breaker as long as the panel were rated for that amperage and the wire sizes were appropriate.
What device protects an electrical circuit?
An example of a circuit protection device is a fuse. Another example is a circuit breaker.
What prevents the main circuit breaker and the mission essential circuit breaker of the secondary distribution center from being energized simultaneously?
an interlocking device
