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Why live and neutral wire essential for proper working of electrical circuit?
Wiki User
∙ 10y ago
Two wires are always needed to supply electrical equipment so that the current has a complete circuit to flow in. One of the wires is earthed at the supply transformer, that one is called the neutral, and the other one is the live.
Wiki User
∙ 10y ago
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What are the inspections and test you will carry out on an electrical installation?
Different countries have different regulations about electrical inspection.
What happens if you wire a ground and neutral wire together in an outlet box?
If there is a GFCI in the circuit it will stop working correctly. They compare ground current to neutral current to detect a fault. It makes ground current equal to neutral current which is a fault condition.
What could be wrong if you turn on a circuit breaker after working on the circuit and the breaker does not trip but there is no power to the circuit?
reset your breaker...... make sure it is pushed completely to the off position. then turn it back to on. ...... Or, it may be tripping with your wiring job.Maybe either the hot or the neutral is still disconnected from the circuit? Or, maybe, within a socket outlet you want to use that is on that circuit, either the hot or the neutral wire is not properly connected into its terminal in the socket outlet?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-energizedIF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
Why is it not advisable to handle electrical circuit with wet hand?
Water is a good conductor of electricity. Should your hands be wet while working with a live electric circuit, the odds are increased that you will accidentally complete a connection and give yourself an electric shock.
Why do electrical wires need colour coding?
That makes the circuit easier to trace back. It's strictly for the convenience of service personnel or anyone else who might be working on the vehicle.
What is the electrical force that is present in a working circuit?
The electrical force is known a electromotive force and is measured in Volts.
What does a motor do to help the circuit from working?
it changes the electrical energy into mechanical energy
What does the wire do in an electric circuit?
The neutral wire is a return wire for the current in an electrical circuit. Do not confuse for the ground wire which is also a return wire but is used in the event the connected appliance shorts to protect the user from electrical shock. The neutral is actually very similar to the ground, though. In a residence the neutral comes from the power plant, whereas the ground comes from a ground rod below the meter. In most older homes the ground and neutral were connected to the same bar in the breaker box. In newer homes they now have separate bars. Here is something interesting about the neutral wire. If you are testing a live circuit using a static checker, the neutral will not show a charge, only the hot wire will. However, if you had a circuit controlling some device (maybe a light fixture) and the light fixture was in the on position, but the neutral was cut you would notice the two wires slightly sparking when you touch them together. If you were to complete this circuit with your body you will get shocked or electrocuted. If the device were in the off position you would be safe, but don't take any chances when working with electricity. Turn off the power first.
What are the inspections and test you will carry out on an electrical installation?
Different countries have different regulations about electrical inspection.
Is a ground fault circuit breaker nessesary for a washing machine?
A ground fault circuit breaker essentially senses the difference currents flowing in the incomming & return wire of an electrical supply circuit. In normal cases ideally the difference must be zero or very close to it. Whenever there is a fault & the electrical path also takes any other route e.g a operator who has accidentaly touched any live part of the equipment, there is a current flow imbalance in the input & return path of the electrical supply circuit. This imbalance is sensed & used to trip the main electrical circuit & thereby limits the Intensity & Duration of the Electrical current flowing through the operator. This results in the operator feeing a small jolt instead of a nasty or hazardous electrical shock. From the above it is obvious that ground fault circuit breaker is essential for safety of the operator especially where the applicance is working with water or in watery surroundings & there is every chance of the water or operator accidentally comming into contact with a live electrical circuit & thereby create a safety.
What is Selection procedure for motor protection circuit breaker?
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.
What happens if you wire a ground and neutral wire together in an outlet box?
If there is a GFCI in the circuit it will stop working correctly. They compare ground current to neutral current to detect a fault. It makes ground current equal to neutral current which is a fault condition.
What is definition of residual voltage?
Net voltage in the Neutral of a three phase electrical system is called residual voltage.
What is caused when the hot wire and either the neutral or ground wire make contact?
A short circuit. If things are working as they should breaker will trip or fuse will blow.
How do you test electrical equipment?
There are 1000s of pieces of electrical eq, you must be more specific. In general, you test for ground fault, and circuit integrity. These principles can be further broken down to the specific item you are working with.
How does a electrical fuse work?
it melts and breaks the circuit when current beyond its safe working limit passes through it . it can be of many types metallic , electrolytic .
Describe safe isolation procedure for safe systems of working in electrical circuit?
Shut it off and lock it out. Sign the lockout card and keep your key with you.
