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Answer for USA, Canada and countries running a 60 Hz power supply service. Yes you can add these two breakers to the sub panel. You will have to keep in mind the fact that if the total loading of the two breakers exceeds 30 amps the 30 amp sub panel breaker will trip. If you use the 20 amp and the 15 amp loads individually then you will be under the 30 amp feeder sub panel breaker and good to go. With feeders of 3 conductor #8 the 30 amp breaker can be increased to 40 amp. If there are large motor loads involved this answer will change as starting current has to be calculated into the equation. View discussion page for additional information.

SAFETY ADVICE Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized

IF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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14y ago
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11y ago

Yes but it will limit your 20 amp circuit to 15 amps. Any amperage over 15 amps on the 20 amps circuit will trip the breaker protecting the sub panel.

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Q: Can a sub panel from a 15 amp breaker be used with a branch circuit with 20 amp breaker?
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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.


What circuit breaker is used in a load center?

Don't Understand your question, all of your circuit breakers start at the load center and then branch out to your recepticles(plugs) ETC.


Is a circuit breaker a resistor?

No, a circuit breaker is a safety device that is used in a circuit to limit the amount of current in an overload or short circuit condition. The number on a breaker is the top end current that the breaker will handle before opening the circuit.


What are the common sizes of circuit breaker panel for all electrical home?

200 amp is the most common size used in most homes.


Can you install a tandem breaker?

Tandem breakers, often called split breakers or double breakers, provide two separate circuits in the space of a regular sized breaker opening. Every circuit breaker panel has a limited number of circuit openings available. The problem is that when the openings are all used up and you still need to add another circuit, what do you do? You could change the electrical panel or double up circuits on a breaker, but this could place too much load on a particular circuit. So what then? The answer that many have found is a tandem breaker. This type breaker is the same size as any other breaker, but it has its difference. This breaker sports two smaller breakers built into one regular sized breaker. Each has its own breaker switch and the breaker snaps in just like a regular breaker. With this simple innovation, you can add a circuit and protect the circuit on its own dedicated line.

Related questions

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.


What is the maximum number of branch circuit breakers allowed in a 100 amp panel?

I just spoke with an inspector here in NJ today and according to him pending on what panel(squareD)in this case, it is 24 space but can be 48+. Stating that the breakers allow you to place two branch circuits on one breaker. Didn't make sense to me, being that while in school at my union it was 1 circuit for each breaker. Unless, some tandem breakers are used. Check the breaker and see what its rated for. Hope this helps.


What type of circuit breaker is required for a 240 v branch circuit?

the circuit breaker used will be miniature circuit breaker(MCB) maily used in homes.Answer for USA, Canada and countries running a 60 Hertz supply service.A two pole circuit breaker is used for a load of 240 volts. It is sized, according to the load amps of the device, to protect the wires that supply the load current.


Where is power window circuit breaker for 1989 Toyota Cressida?

Not circuit breaker only fuses in cars that are used. Driver side kick panel 7.5a gauge fuse check it fist.


A fuse or circuit breaker used in a circuit is usually inserted in?

A fuse or circuit breaker used in a circuit is usually inserted in series with the load.


Where circuit breaker are used?

Circuit breakers do not use anything, they are a controlling device. They can automatically open the circuit if the current exceeds the current rating and you can manually disconnect the power from the circuit.


What circuit breaker is used in a load center?

Don't Understand your question, all of your circuit breakers start at the load center and then branch out to your recepticles(plugs) ETC.


Why tap in your house gives shock when it is touched or used?

Your water system is not grounded. Turn the main breaker in your distribution panel to off and ground the water system. If a "hot" wire has come into contact with the plumbing, when you turn the electrical panel main breaker back on a breaker will trip. This will give you the circuit that is at fault and a place to start looking for the short circuit.


Is a circuit breaker a resistor?

No, a circuit breaker is a safety device that is used in a circuit to limit the amount of current in an overload or short circuit condition. The number on a breaker is the top end current that the breaker will handle before opening the circuit.


What are the common sizes of circuit breaker panel for all electrical home?

200 amp is the most common size used in most homes.


Can you install a tandem breaker?

Tandem breakers, often called split breakers or double breakers, provide two separate circuits in the space of a regular sized breaker opening. Every circuit breaker panel has a limited number of circuit openings available. The problem is that when the openings are all used up and you still need to add another circuit, what do you do? You could change the electrical panel or double up circuits on a breaker, but this could place too much load on a particular circuit. So what then? The answer that many have found is a tandem breaker. This type breaker is the same size as any other breaker, but it has its difference. This breaker sports two smaller breakers built into one regular sized breaker. Each has its own breaker switch and the breaker snaps in just like a regular breaker. With this simple innovation, you can add a circuit and protect the circuit on its own dedicated line.


What device is used as a form of safety device in an electrical circuit?

A fuse or circuit breaker will fit this description.