1 for every 13 outlets, lights etc plus one for each major appliance ( heavy duty ) The minimum *required* number of circuit breakers will be dictated by your local building codes, so there is no one answer that will fit all. If you are planning on building or remodeling a house and are just interested in a back of the envelope estimate, keep in mind that up to a point, more circuits, and thus circuit breakers, are better than fewer. At a minimum, I would use a dedicated circuit for each of: - the furnace - the air conditioner - the refrigerator - the stand alone freezer - the basement lights (or the lights for where ever the breaker box is located) - the sump pump (if you have one) - the water pump (if you have one) - the garage door opener By using a dedicated circuit for each, you minimize the chance of a malfunctioning device or frayed extension cord causing the shut down a critical house hold system. From there it's a matter of how many rooms and outlets. For a family room with an entertainment center, computer equipment, etc., two circuits for the outlets and one for any overhead lights would not be unreasonable. On the other hand you might have two bedrooms share the same circuit for wall outlets and another shared circuit for the ceiling lights. If each room has its own air conditioner, the ideal situation is to locate an outlet by the window which is a circuit dedicated just for that air conditioner. As an aside, ground fault detectors are a must for the kitchen and bathroom, but use self contained ground fault outlets rather than a ground fault circuit breaker for these areas. Ground fault circuit breakers are best for outdoor circuits, like outdoor lighting, Swimming Pools, etc. While the building codes may dictate a minimum number of circuits needed, based on the size of the house, there is nothing to stop you from having more. What you will need to do however, is make sure you do not exceed the capacity of your electrical service. For that the services of a licensed electrician are highly recommended.
It depends on the manufacturer of the circuit panel. Only their breakers are acceptable for use in their panels. That being said most breakers are 10 or 15 amp load breakers for lights and outlets with 30 amp load breakers for large appliances. The breaker used depends primarily on the size wire used in the circuit as undersized wiring will cause fires.
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For the last sixty years in North America a main disconnect is mandatory in new construction.
yes
You need to be more specific. Do you want a contact telling you if a circuit breaker is on? If that is your question, the answer depends on the model of the breaker.
A circuit breaker must be reset to ON after a short circuit but does not need to be replaced. It depends on the type of CB. A fuse is also a circuit breaker and it needs to be replaced after a short circuit. Relayed circuit breakers have to be "picked up" after a dropout and need not be replaced as such.
If the circuit breaker is in the off position there is no need of overload protection. Overload protection monitors the load amperage, If there is no amperage through the circuit there is nothing to monitor.
handling the circuit breaker
A circuit breaker has a small handle that will flip to the open position due to overload.
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.
No. The breaker must protect the circuit components such as wiring, outlets and switches that are connected to the breaker. Therefore if you have a 30 amp circuit as dictated by its components you need to protect it with a 30 amp or less breaker.
You need to be more specific. Do you want a contact telling you if a circuit breaker is on? If that is your question, the answer depends on the model of the breaker.
A circuit breaker must be reset to ON after a short circuit but does not need to be replaced. It depends on the type of CB. A fuse is also a circuit breaker and it needs to be replaced after a short circuit. Relayed circuit breakers have to be "picked up" after a dropout and need not be replaced as such.
Usually a 15 or 20 amp breaker is sufficient
A circuit breaker is a switching device which can make,brake and carrying (or trip the circuit) that specified over currents for a small interval of time . There is a different types of Circuit Breaker's are there 1.According to their arc quenching media these are divided into 4 types a) Oil circuit breaker b) Air blast circuit breaker c) SF6 circuit breaker d) vacuum circuit breaker 2. According to their services the circuit breaker can be divided as a) Outdoor Circuit Breaker b) Indoor Breaker 3. According to the operating mechanism of circuit breaker they can be divided as a) Spring operated Circuit Breaker b) Pneumatic Circuit Breaker c) Hydrolic Circuit Breaker 4. According to the voltage level of installation these are divided into 3 types a) High Voltage Circuit Breaker b) Medium Voltage Circuit Breaker c) Low Voltage Circuit Breaker.
Electric circuit need a main circuit breaker that can protect the whole circuit from short circuit even in ground fault. It's safer if you use breaker with built in ground protection.
A circuit breaker does not "cause" smoke. A circuit breaker "breaks" a circuit when there is too much current, creating a hazardous condition for the wires that are connected to the circuit breaker. The circuit breaker PROTECTS you from electrical fire. Find the source of the smoke; what burned? If a circuit breaker tripped during the incident, it is usually caused by melting/burning wire insulation, either inside or outside of an appliance. If the insulation inside the walls of your house has burned/melted, it could be that the circuit breaker was too large for the wire or that the circuit breaker failed to shut off at the appropriate current load. If the circuit breaker failed, your insurance should help you. If an appliance overloaded the circuit, your insurance should help you. If someone connected an oversized circuit breaker, causing the wire to overheat, your insurance company may refuse to help you.
You need a breaker rated for 10 amps and 250 volts. The breaker must also fit properly in your panel.
A circuit breaker is designed to 'break' in a circuit if a short circuit (or other malfunction) occurs. This prevents overheating (or burn-out) of the circuit wires. In older systems, you would need to find which fuse wire has fused and replace it. In a circuit breaker, once the fault has been found and corrected, the breaker is simply switched back on.
The circuit breaker for the headlights is intergrated with the headlight switch.
The circuit breaker is sized to the full load amps of the motor times 250%.