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Yes this could be true. The breaker to the load will have tripped. The main breaker should still be allowing voltage to the distribution panel because it did not trip. If the main breaker tripped then the distribution panel must have been close to maximum amperage and the shorting of the branch circuit was enough to trip the mains.

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Q: You lost a voltage leg by connecting the ground wire to the circuit breaker but com ed wires are still energized?
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When a voltage leg is lost by connecting the ground wire to the circuit breaker are com ed wires still energized?

Yes this could be true. The breaker to the load will have tripped. The main breaker should still be allowing voltage to the distribution panel because it did not trip. If the main breaker tripped then the distribution panel must have been close to maximum amperage and the shorting of the branch circuit was enough to trip the mains.


What is a Circuit breaker and explain type circuit breakers?

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.


Which electrical test requires the supply to be energized?

Testing of an electrical circuit for voltage requires the supply to be energized.


What is the role of a breaker in a circuit?

the breaker makes sure that nothing in the circuit is damaged by an increased amount of amperage or voltage


Need of isolator on both side of circuit breaker?

Before anyone is allowed to work on a high-voltage circuit breaker, it must be tripped, electrically isolated, earthed (grounded), barriers/warning notices put in place, and a permit to work document issued by an engineer to the senior member of the maintenance crew. 'Isolation' means a physical (and visible) break in the conductors between the circuit breaker and any potential source of supply -and this is provided by placing isolator switches on each side of the circuit breaker. Without these isolators, the circuit breaker would remain energized, even though the circuit has been broken by the circuit breaker.


What is the difference of a Circuit Breaker from an Air Circuit breaker?

They are completely different. A moulded-case circuit breaker is a low- or medium-voltage device, whereas an air circuit breaker is a very large circuit breaker designed for use in high-voltage transmission/distribution substations.


What are the three main types of high voltage switching gear met with in industrial installations?

High voltage switch gear operates in the voltage range of 36 kV and above. Minimum oil circuit breaker, air blast circuit breaker and SF6 (Sulphur hexafluoride) circuit breaker are the three mostly used disconnects for high voltage switchgear.


What is the purpose of the flux shifter in a low voltage circuit breaker?

A trip rod on the circuit breaker is spring loaded and held by a permanent magnet in the "armed" position; the flux shifter, when energized due to an overcurrent event, creates a magnetic field opposite the permanent magnet field....this neutralizes the magnetic field, releasing the trip rod.


Do you have a circuit breaker which operates for one millon volts?

Circuit breakers operate on current not voltage.


Does the power supplied to trip shunt trip breaker have to be applied momentarily or can it latch?

A shunt-trip breaker trips when voltage is applied to the coil. It does not self-reset when the voltage is removed, the breaker must be reset manually. The trip voltage can either latch or be applied momentarily, but must be de-energized before the breaker will reset.


High voltage will trip a circuit breaker?

A higher voltage means that a higher current will flow in the same load. It is the current that causes the breaker to trip.


What is a mcb and what is it used for?

mcb is master circuit breaker. it is used in the circuit for the protection of equipments from over voltage.