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making current is a peak value attain at first cycle when the circuit breaker is close.the making current rating is expressed in "peak" value of the maximum ac current it can safely close on that's why it is always have higher value than breaking current. Making current is limited by the withstand capability of the contacts.
Breaking current is based on the ability of the contacts to interrupt the current. If the contacts are not able to interrupt the current when they open, the heat energy in the resulting arc will often destroy the device. the breaking current rating is expressed in RMS value of the current.
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Why making capacity is more than breaking capacity in circuit breakers and contactors?
Making capacity is the max fault current it can carry during closing of breaker, e.g. You are closing a breaker on fault. The making capacity is always higher because it is expressed in peak value not rms, and also because of the DC offset, voltage and PF while closing
Can you increase the power supply to a circuit breaker in a condo It's a townhouse style condo We have our own circuit breaker in the garage but we need 150amps and only have 90amps?
Before making any changes to circuit breakers, make certain that the breaker does not exceed the capacity of ANY current carrying wire in the circuit. If you attempt to increase the size of the breaker in your condo, and exceed the capacity of the wire that is fed from that breaker, you WILL burn down the condo and when the fire department investigates the fire and finds out what you did, the association will be quite upset with you. Plus, it's against the law. If you need to make that kind of change to your electrical wiring, contact a qualified electrician to discuss options. You will also need approval of the Condo Association in most situations like this.
What is breaking capacity in mcb?
I haven't heard of this in relation to a breaker. Breakers will have ratings for short circuit interrupting, max voltage, line charging, etc. A load break switch will have a "breaking capacity", meaning it can be opened as long as the load current is below the breaking rating.
What is a capacitive reactive circuit?
A circuit that has only a capacitor in it. Or the net reactance is below zero, making it capacitive. The current leads the voltage in a negative (capacitive) reactive circuit.
WHAT is the rating of earth leakage circuit breaker used for welding machines?
yes , it is required so that the leakage current from transformer/electrical windings to metallic enclosure of welding machine does not harm a person/operator & the current is rooted back to earth bajaj mahesh, asst fire & sec officer
When making an electrical connection on a stove you should use?
When making an electrical connection on a stove, you should use a circuit breaker.
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.
Do the making capacity can occur in Low voltage Circuit Breaker?
Unintelligeable...say again in proper English.
Why making capacity is more than breaking capacity in circuit breakers and contactors?
Making capacity is the max fault current it can carry during closing of breaker, e.g. You are closing a breaker on fault. The making capacity is always higher because it is expressed in peak value not rms, and also because of the DC offset, voltage and PF while closing
Can you increase the power supply to a circuit breaker in a condo It's a townhouse style condo We have our own circuit breaker in the garage but we need 150amps and only have 90amps?
Before making any changes to circuit breakers, make certain that the breaker does not exceed the capacity of ANY current carrying wire in the circuit. If you attempt to increase the size of the breaker in your condo, and exceed the capacity of the wire that is fed from that breaker, you WILL burn down the condo and when the fire department investigates the fire and finds out what you did, the association will be quite upset with you. Plus, it's against the law. If you need to make that kind of change to your electrical wiring, contact a qualified electrician to discuss options. You will also need approval of the Condo Association in most situations like this.
What is the difference between Load Break Switch and Circuit Breaker?
There are two important different parameters as far as the disconnection/connection of Electrical utilities is concerned.- Breaking capacity.- Making Capacity.In simple way the Load Break Switch used to cut off healthy circuits or to break / disconnect the load. As a precaution, normally the LBS / Isolator are to be switched on under no load, the connected load to be utilized after switching on the Isolator. This why it has no making capacity. Circuit Breakers are intended to operate under unnormal conditions in order to clear the fault & to isolate the defective circuits protecting its associated electrical equipment, therefore breaking and making capacities are considered as the most important criteria as far Circuit breaker are concerned.
Do circuit breakers trip more easily in humid weather?
Circuit breakers are designed based on electrical load and capacity, not weather conditions. Humidity alone should not cause circuit breakers to trip more easily. However, if there is moisture causing a short circuit or electrical leakage, then the circuit breaker may trip more frequently.
When we 'switch on an electrical appliance' what change are we making to the circuit?
By 'switching on an electrical appliance' we are completing (closing) the electrical circuit, allowing electricity to flow and the device to work.
How do you create a dedicated circuit?
To create a dedicated circuit, you need to run a separate electrical cable from the circuit breaker box to the intended outlet or appliance. This circuit should have its own circuit breaker to prevent overloading. It's important to follow all local building codes and regulations when installing a dedicated circuit.
Can you change a 32 amp circuit breaker to a 40 amd circuit breaker?
It is not recommended to swap a 32 amp circuit breaker with a 40 amp one without verifying that the wiring and components are rated for a higher amperage load. Consult with a licensed electrician to ensure the safety and compatibility of the circuit before making any changes.
What could be the cause of arcing between the buss bar and a breaker?
Arcing between the bus bar and a breaker could be caused by loose connections, excessive load on the circuit, corrosion or physical damage to the components, or poor installation. It is important to investigate and address the root cause promptly to prevent damage and ensure safety.
Why do some lights go off in your house when you turn on too many appliances?
When you turn on too many appliances, the electrical circuit may become overloaded. This can cause a temporary increase in electrical resistance, leading to voltage drops and making some lights dim or flicker. The circuit breaker or fuse may also trip as a safety measure to prevent overheating and potential fire hazards.
