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.
The purpose of a circuit breaker is to protect electrical circuits from short circuiting.
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.
A circuit breaker does not "cause" smoke. A circuit breaker "breaks" a circuit when there is too much current, creating a hazardous condition for the wires that are connected to the circuit breaker. The circuit breaker PROTECTS you from electrical fire. Find the source of the smoke; what burned? If a circuit breaker tripped during the incident, it is usually caused by melting/burning wire insulation, either inside or outside of an appliance. If the insulation inside the walls of your house has burned/melted, it could be that the circuit breaker was too large for the wire or that the circuit breaker failed to shut off at the appropriate current load. If the circuit breaker failed, your insurance should help you. If an appliance overloaded the circuit, your insurance should help you. If someone connected an oversized circuit breaker, causing the wire to overheat, your insurance company may refuse to help you.
If you are referring to a circuit breaker in an electrical panel, each circuit breaker is designed to trip at a preset amperage rating. The NEC (national electrical code) only allows one circuit, rated at no more than 80% of the breaker rating to be fed from each circuit breaker. Generally the builder will design the electrical layout of any building to maximize and to most effectively balance the load for lighting and receptacles. Adding another circuit wire to the load side of the breaker already in use could have a potential for overload which could cause the breaker to heat up and trip, not to mention that it complicates things during troubleshooting. New circuits or other wire additions must have their own breaker.
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.
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.
In the electrical trade, this device is known as a circuit breaker.
An electrical breaker is a safety device used to open a circuit that has an electrical fault on it.
circuit breaker is break the electrical circuit .circuit gear is generator analyzer
An alternative to using a fuse is to use an electrical circuit breaker.
A fuse or circuit breaker will fit this description.
Main circuit circuit breaker
circuit breaker
The purpose of a circuit breaker is to protect electrical circuits from short circuiting.
An example of a circuit protection device is a fuse. Another example is a circuit breaker.
you have a short to ground in the electrical circuit that that breaker is on.
The selection of overload protection for motors is taken from a table in the electrical code book. It is based on the full load current rating of the motor.