The most likely cause for a loadcenter [circuit breaker box] to hum loudly when a high capacity load is connected is that there is a loose connection.
This could be a loose fitting breaker, bad internal contact in a breaker or a loose terminal screw.
High loads and loose connections mean resistance and voltage drop. This equals heat.
Your service entrance panel is at risk.
CALL AN ELECTRICIAN.
NOW! <><><> It can also mean that the breaker is just at the tripping point, and is the magnetic kind. The circuit may be too small for the load. It could also be that the load, plus the other loads are just under the trip point on the main breaker.
<><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
A circuit breaker is classified as electrical equipment.
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.
An electric circuit breaker is switch that is used to protect electrical circuit from a short circuit or overload.
circuit breaker is break the electrical circuit .circuit gear is generator analyzer
An electrical breaker is a safety device used to open a circuit that has an electrical fault on it.
An alternative to using a fuse is to use an electrical circuit breaker.
Breaker or circuit breaker is a switch operated automatically by electricity. Breakers are designed to protect or to prevent an electrical circuit from short circuit or overloading.
A Circuit Breaker Panel is a electrical safety panel that controls electricity to different appliances to a building. If there is an electrical fault, the circuit is immediately broken for safety.
The working principle of a motor protection circuit breaker is to cut the electrical current off in a power surge situation. The circuit breaker safeguards the motor from electrical damage.
A fuse or circuit breaker will fit this description.
too much on one breaker
The purpose of a circuit breaker is to protect electrical wiring from overheating and starting fires.
A circuit breaker is an automatically operated electrical switch.Its protect an electrical circuit from damage over load and short circuit. A circuit breaker can be reset to resume normal operation.AnswerIt depends on the circuit breaker. A miniature circuit breaker, for example, contains a bimetallic temperature sensor (overload current protection) and a magnetic trip (short-circuit current protection). On the other hand a high-voltage circuit breaker contains no sensors but relies, instead, on external protective relays which, when activated, energise a trip coil within the circuit breaker, which trips the breaker.
An electrical breaker is dual function an electrical fuse just has one purpose.
Main circuit circuit breaker
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
It is usually printed on the circuit breaker in KA Killo Ampere. That is thousands of Amps.
The purpose of a circuit breaker is to protect electrical circuits from short circuiting.
An electrical breaker or circuit breaker is used to protect appliances and electrical devices from damage caused by short circuits and electrical overloads. It basically detects a defect in the system and then interrupts the flow of current.
In the electrical trade, this device is known as a circuit breaker.
The electrical terminology for this type of breaker is a tandem breaker. It is where two breakers circuits can be in the same one breaker slot in a distribution panel. On this type of breaker there will be two output for a circuit value of what ever the breaker is rated for.
There are two devices that will serve this purpose. One is an electrical circuit breaker and the other is an electrical fuse. Both devices are sized to protect the wire in the circuit from a high current rush of a short circuit.
An example of a circuit protection device is a fuse. Another example is a circuit breaker.