0
When setting up a breaker box how do you determine circuit breaker capacity?
Wiki User
∙ 12y ago
find amphere required
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the setting in air circuit breaker?
"The setting" is not clear. There can be lots of stuff in a breaker control cabinet that could be deemed to have a "setting".
What is the requirement for energizing a 120 volt circuit breaker?
Before energizing a breaker for a circuit, the circuit has to be clear of any short circuits or grounds. This can be accomplished by the use of a megger on the correct voltage setting.
What should be the short circuit setting of the feeder breaker of a transformer so that it does not trip on short circuit fault in secondary side?
You need to model this - the line impedance and transformer impedance, and the voltage will determine this. There is no "one size fits all".
What is the difference between thermal magnetic release circuit breaker microprocessor based release circuit beraker?
As far my knowledge goes the only difference i found in a thermal magnetic relase & microprocessor based was in a microprocessor based Circuit breaker we have a additional protection i.e. for Earth fault. Aparts that the range of fault setting in a microprocessor based circuit breaker is more than in a thermal magnetic trip unit.
Where can you find a self re-setting circuit breaker for a 65 Mustang?
The only place I remember a self reseting circuit breaker on my 67 is the line the feeds the power convertible top. But in general, most parts stores have circuit breakers like that, you simply need to know how large (how many amps) you want to buy.
How do you check amp draw?
Amperage is measured by a multimeter. First determine the amperage rating on the multimeter. Next, select the appropriate setting on the tool. The next step is to set the range on the multimeter. Make sure to plug the leads into the appropriate terminals. Run the circuit through the multimeter to measure the current. Turn off the breaker, make sure the AC circuit is turned off, then rewire the circuit.
Does breaker trip when circuit it is protectiong got wet?
Not unless the leakage current gets higher that what the trip setting of the breaker is. In many underground conduit systems the feeder conductors are in water continuously due to leaks in the under ground conduit system.
What will be the effect if the d.c motor is directly connected across the supply without starter?
At zero rpm a dc motor draws a current that could be enough to blow the circuit breaker. In that case it is normal to place a resistor in series to limit the current to slightly below the circuit-breaker setting. The resistor is switched out after the motor runs up.
Can circuit breakers help to prevent building fires?
Breakers limit the current on the conductor to a safe level, too many appliances plugged in. You trip a breaker, hopefully you then transfer load to another circuit. Breakers use two different methods to accomplish this, one uses a bimetallic strip and the current passes directly through, too high a current causes the strip to deflect. It acts on a mechanism much like the sear in a guns trigger, the deflection pulls the trigger causing a spring to open the contacts and turn off the circuit. Another type is thermal magnetic, current passing through the breaker causes a magnetic field to act on a coil tripping the breaker. When breakers are wired and work properly they prevent fires!Bending metal opens a switch
How would you be able to change the trip of a circuit breaker?
Small size home breakers have a fixed setting and can not be adjusted. Three phase moulded case breakers have adjustable trip settings on the load side of the breaker. These overloads can be set for motor inrush to stop the breaker from needless tripping and yet still protect the other equipment down stream from the breaker.
What actions to be taken should a main generator circuit breaker stay connected?
I don't understand the question. <<>> If your generator's main breaker does not trip when an overload occurs on the generator's output the breaker's trip setting needs to be looked at. Usually the molded case breaker's face cover can be removed. This will allow you access to the trip settings. Set the overloads to the maximum generator's output. The short circuit setting should be set at 250% of the maximum generator output. If these parameters can not be met on the existing breaker there might be a chance that the breaker has been changed out at some point in time and the wrong breaker was installed at that time. This scenario happens quite frequently on remote operations where the service has to be maintained and the site doesn't have a second back up generator. The site supervisor usually says "just make it work".
What is earth relay circuit breaker?
An Earth Relay Circuit Brearker(ERCB is a circuit breaker that senses an earth leak within the system and responds by cutting the power to the appliance or section or giving an alarm pending on the complexity of the system. Most of them can be set to a certain sensitivity, for homes it will be normally 30 mA fixed earth leakage current with an instantanous cut out. For industrial and commercial application the setting can vary pending on the protection needed.
