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I think you mean either what is the correct size or minimum wire size needed when a branch circuit is protected by a 20 A breaker. The size is 12 American Wire gauge (AWG). 14 AWG is used for 15 A circuit and 10 AWG for a 30 A breaker. The lower the gauge the larger the cross-section of the wire.

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โˆ™ 2010-05-08 22:25:40
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Q: What is the maximum wire size needed for a typical branch circuit that is protected with a 20-amp circuit breaker?
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How many amps are in a typical circuit breaker?

There is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping. There is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping.


How many outlets and lights on a 60 amp breaker?

It would be quite unusual to have a single 60 amp circuit with outlets and lights. You would have to use very heavy wire to each light and outlet. Typical lighting circuits would be protected by 15 amp breaker and a circuit with general purpose receptacles would have a 20 amp breaker. A typical lighting circuit might have 10 to 12 fixtures and receptacle circuit might have 8 outlets. If you don't know how to size a circuit get an electrician.


Is it safe to have 200 plus amps in breakers inside than 90 amps on the main service breaker outside?

I am assuming by your description that the panel is protected by a 90 amp breaker and the breakers in the panel when added up is 200. This is okay as long as your 90 amp breaker trips on a regular basis. It is typical for the breakers to add up to more than the main breaker under the assumption that you would rarely be running each circuit at its maximum capacity.


What size circuit breaker is needed for a 900 watt microwave?

A 900 watt microwave will live quite comfortably on an ordinary (US) 20 amp circuit breaker supplying multiple 15 amp receptacles. A 20 amp breaker can support up to 2400 watt load, while a 15 amp typical receptacle can support a maximum 1800 watt load.


What happens if you put a 15 amp circuit breaker in a light circuit?

The circuit should be protected by a 15 A breaker.CLARIFICATION:If the wires and other components are capable of handling 15 amps (14 Ga wire or larger), you can safely protect the circuit with a 15 amp breaker. If the circuit is a non-standard lighting device for something other than typical residential application, you should contact an electrical engineer to help you determine the proper wiring and breakers.

Related questions

How many amps are in a typical circuit breaker?

There is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping. There is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping.


How many outlets and lights on a 60 amp breaker?

It would be quite unusual to have a single 60 amp circuit with outlets and lights. You would have to use very heavy wire to each light and outlet. Typical lighting circuits would be protected by 15 amp breaker and a circuit with general purpose receptacles would have a 20 amp breaker. A typical lighting circuit might have 10 to 12 fixtures and receptacle circuit might have 8 outlets. If you don't know how to size a circuit get an electrician.


Is it safe to have 200 plus amps in breakers inside than 90 amps on the main service breaker outside?

I am assuming by your description that the panel is protected by a 90 amp breaker and the breakers in the panel when added up is 200. This is okay as long as your 90 amp breaker trips on a regular basis. It is typical for the breakers to add up to more than the main breaker under the assumption that you would rarely be running each circuit at its maximum capacity.


What is making capacity of a circuit breaker?

Hard to define... A four year old child has the strength to physically "make" a typical household circuit breaker, while a teen would be able to "make" a typical industrial circuit breaker. (The latter breaker being physically much larger than the former.) Circuit breakers have their "breaking capacity" rated in AMPS. A typical household breaker is rated at 20, 30 or 50 Amps. Industrial breakers might be rated at 500 amps or a thousand or even more. Hope this helps but if it didn't answer your question, please rephrase it and ask again.


What size circuit breaker is needed for a 900 watt microwave?

A 900 watt microwave will live quite comfortably on an ordinary (US) 20 amp circuit breaker supplying multiple 15 amp receptacles. A 20 amp breaker can support up to 2400 watt load, while a 15 amp typical receptacle can support a maximum 1800 watt load.


Where does power come into most homes?

It comes into the home from the electrical grid. It enters the home through a meter base and is fed into the service panel. This panel routes the electricity to each circuit in the home. Each circuit is protected by a breaker designed to trip and shut off power if the circuit becomes overloaded or there is a short in the circuit. A typical home will have a 200 amp service containing 40-42 separate breaker locations and one main breaker that shuts off power to the entire home.


Do you have a 15 0r 20 amp circuit?

Go to your distribution panel and shut off the breaker that you think is the circuit in question. If the circuit becomes de-energized then the breaker you just turned off feeds that circuit. Look on the handle of the breaker and the number you see is the amperage of that circuit. <<>> Determination of a 15 or 20 Ampere circuit is normally indicated by a combination of a 20A breaker and a 20A dedicated outlet. A 15A circuit normally has multiple outlets; not typical in a 20A circuit.


What happens if you put a 15 amp circuit breaker in a light circuit?

The circuit should be protected by a 15 A breaker.CLARIFICATION:If the wires and other components are capable of handling 15 amps (14 Ga wire or larger), you can safely protect the circuit with a 15 amp breaker. If the circuit is a non-standard lighting device for something other than typical residential application, you should contact an electrical engineer to help you determine the proper wiring and breakers.


What is the average amperage in a wall outlet?

There is no such thing as "average amperage". A typical house wall outlet is protected by a 15 amp circuit breaker. This means that as you place a load on that circuit such as a lamp, vacuum cleaner, tv.. they will all draw a certain amount of amps. Each device is different. If the total load on that circuit ever exceeds what the circuit breaker is rated for, the breaker trips preventing too much current from flowing through the wires in your wall thereby heating them to the point of becoming a fire hazard.


What Name you a typical application where a circuit breaker may be used?

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How do you reset your circuit breaker?

I'm assuming this is a typical breaker you would find in your home. Pull the breaker to the off position, then to the on position. When the breaker blows on overcurrent, it will go to somewhere between the off and on position and open the circuit. From this position, you cannot force it to close (on position) without first taking it completely to the off position.


What size amp circuit breaker should be used for a dishwasher?

There is a rating plate on the dishwasher that will tell you how much current it draws. A typical breaker would be 20 amps with 12 AWG wire.

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