0
For voltage drop calculation you must use the current of the circuit breaker or the normal currents?
Wiki User
ā 15y ago
For voltage drop calculation you must use the current of the load and the distance of the load from the supply source. The circuit breaker is then used to limit the current to the rating of the wire that feeds the load.
Wiki User
ā 15y ago
Add your answer:
Earn +20 pts
Rupturing capacity of a circuit breaker?
the maximum short current that can be safely break by the circuit breaker.
What is a difference between 10KA and 22KA circuit breakers?
The previous answer is incorrect, and I would advise that user to not give out information if they are going to give completely misguided information. The interrupting rating of a breaker is the maximum current that the breaker is designed to handle, at the breaker's rated voltage, before damage will occur to the breaker. A breaker will trip at FAR LESS than the interrupting rating, but it is extremely dangerous to expose the breaker to any situation where it will have more than the rated interruption current. the breaker is designed for. The reason some breakers are rated at 22kA instead of 10kA is because they typically have far larger conductors hooked up to them, so with the lowered impedance on the circuit there is more of a chance for the breaker to experience a higher fault current at the breaker. So electricians install 22kA breakers to handle the higher "available fault current."
What is different Circuit Breker And Isolater?
I think that the questioner is asking what is the difference between an isolator and a circuit breaker.A circuit breaker is a switching device designed to interrupt a fault current.An isolator is not intended to break a live circuit but, rather, to provide a visible separation between a circuit component and live conductors.For example, isolators (or 'disconnectors' in US parlance) are located on either side of a high-voltage circuit breaker. If the circuit breaker requires maintenance, then the procedure is to:a. trip the circuit breaker.b. open the isolators on each side of the circuit breaker, so there is a visible gap between the circuit breaker and the 'hot' conductors.c. apply temporary earths (grounds) between each isolator and the circuit breaker.d. complete a 'permit to work' card.e. begin work.
Will a circuit breaker function properly if it is back fed?
Yes. The circuit breaker "does not care" which direction the current comes from. It is capable of protecting the circuit in any case.
What do circuit breakers and fuses have in common?
Both fuses and circuit breakers cut off a circuit from its power supply when the total current through the circuit exceeds the current rating of the fuse or circuit breaker, usually due to a short to ground or overloading of the circuit. Both use materials that respond to heat.
Will a circuit breaker give off less amperage?
A circuit breaker does not give off amperage. A circuit breaker allows a flow of current up to the rating of the breaker. Any current higher than that of the breaker's rating will open the breaker's contacts and stop the flow of current.
Rupturing capacity of a circuit breaker?
the maximum short current that can be safely break by the circuit breaker.
What is a rccb?
A residual-current device (RCD), or residual-current circuit breaker (RCCB), is an electrical wiring device that disconnects a circuit whenever it detects that the electric currents not balanced between the energized conductor and the return neutral conductor.
What is a difference between 10KA and 22KA circuit breakers?
The previous answer is incorrect, and I would advise that user to not give out information if they are going to give completely misguided information. The interrupting rating of a breaker is the maximum current that the breaker is designed to handle, at the breaker's rated voltage, before damage will occur to the breaker. A breaker will trip at FAR LESS than the interrupting rating, but it is extremely dangerous to expose the breaker to any situation where it will have more than the rated interruption current. the breaker is designed for. The reason some breakers are rated at 22kA instead of 10kA is because they typically have far larger conductors hooked up to them, so with the lowered impedance on the circuit there is more of a chance for the breaker to experience a higher fault current at the breaker. So electricians install 22kA breakers to handle the higher "available fault current."
Can all circuit breakers interrupt large fault currents?
No, not all circuit breakers are designed to interrupt large fault currents. High-interrupting capacity circuit breakers are specifically engineered to handle and interrupt large fault currents safely without causing damage to the electrical system. It is important to match the circuit breaker's interrupting capacity with the potential fault currents in the system to ensure proper protection.
When dangerously high currents flows through a thin strip of metal melts which creates an open circuit and current stops flow?
This is the general description of how a circuit breaker operates.
How does an RCBO work?
An RCBO (Residual Current Circuit Breaker with Overcurrent Protection) is a device that combines the functions of a residual current device (RCD) and a miniature circuit breaker (MCB) in one unit. It detects imbalances in the electrical currents flowing through a circuit, such as those caused by leakage or faults, and disconnects the circuit to prevent electric shock or fire. The overcurrent protection feature ensures that the circuit is also protected from excessive current flow.
Is a circuit breaker a resistor?
No, a circuit breaker is not a resistor. A circuit breaker is a safety device that automatically interrupts electrical flow in a circuit to protect against damage or fire caused by overloads or short circuits. Resistors, on the other hand, are components that introduce resistance to control the flow of current in a circuit.
What is the sum of currents is known as?
The sum of currents in a circuit is known as total current, which is the combined flow of all individual currents passing through the circuit components. This total current is conserved in a series circuit where it remains constant throughout the circuit.
What is a switch that opens a cuircut when too much current is flowing?
Where I'm from, it's called a "circuit breaker".A circuit breaker.
What is Ir value of a circuit breaker?
The IR value of a circuit breaker refers to its insulation resistance, which is a measure of how well the insulation in the circuit breaker can withstand a high voltage without breaking down. It is typically measured in megaohms (MĪ©) and is important for ensuring the safe and reliable operation of the circuit breaker. A higher IR value indicates better insulation integrity.
What is a switch that automatically opens if a current is too high?
Where I'm from, it's called a "circuit breaker".A circuit breaker.
