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Earth wire is meant to protect the user in case there is earth fault in the device or circuit. Only earth wire alone is not sufficient. It needs to be provided with suitable circuit breaker that breaks the circuit automatically.
Wiki User
∙ 6y ago
Wiki User
∙ 7y agoIn electrical terminology it is called the ground or earth wire. It should never be removed from a circuit because if a high amperage fault occurs on the circuit, it is this wire that carries the fault back to the distribution and trips the breaker or fuse.
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What limits the current that flows through a circuit for a particular appllied DC voltage?
The voltage applied and the resistance across it.
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 are electrical contacts?
Two answers for this question. An electrical contact is any point in a circuit that a wire connects to, such as a screw or terminal block. The term is also used when referring to control circuits. There are contacts inside Relays, Ligthting contators, and motor starters. They can be called N.O. for normally open, and or N.C. for normally closed. They "Make" of "Break" and electrical circuit.
Why are electric ranges wired to separate circuit breaker?
As a range is a high current device, the electrical code stipulates that it has to have its own breaker. The breaker protects the wire feeder. An electric range breaker is set to trip at 40 amps. Using a smaller wire that #8 is not allowed as their ratings are below that of the #8 wire. #10 wire rating is 30 amps, #12 wire rating is 20 amps, and #14 wire rating is 15 amps.
Where does the wire come from in an electrical circuit?
The wire comes from the installer or manufacturer of the circuit.
What are the effects of having too many circuits plugged in?
Circuits are not plugged in. An electrical circuit is the way the voltage from the electrical panel boardis supplied to the load that is to be energized. Circuits come in many different capacities depending on the circuit breaker and wire size that connects to the circuit's load. If the load is greater than the capacity of the circuit's conductor that the breaker protects, then the breaker will trip and drop the overload current offline. This protects the conductor and the ciruit's load from fault damage.
What is NEC 210-4B?
It is a electrical code rule taken from the National Electrical Code book. It has to do with multi wire branch circuits.
What is a constant wire?
Constantan wire is a resistance-wire made of 42% nickel, 1.25% manganese, 0.25% iron and the rest is copper. It is mainly used in making wire-wound rheostats and potentiometers in electrical circuits.
Why is a metal wire connected from an aircraft to the earth during refuelling?
This grounds the aircraft and protects it from any electrical disparity.
What is the Hot wire blue or green?
The "hot" wire between these two coloured wires will be the blue one. The green colour is always used as ground in electrical circuits.
What is an electric shared neutral?
An electric shared neutral is the white or negative wire that is shared between two electrical circuits on a basic single phase system. Most electrical devices use 120 volts and require a "hot" wire and a neutral wire to operate. Some larger devices use 240 volts and require two "hot" wires to operate. Two circuit breakers in an electrical panel can share one neutral wire as long as the breakers are not on the same "leg" of power. When looking at an electrical panel there are usually two "legs" of power feeding all the breakers, each leg has 120 Volts to ground, if the "legs" are combined you will have 240 Volts. A neutral wire can be shared by two circuits as long as the breakers are on separate "legs". If someone needed to add two circuits in their home, the could run what is called a 3-wire romex, It has a black wire, a red wire, a white wire and a ground wire. The white wire is the neutral for both the black and red 120 volt circuits, and the breakers for the new circuits would need to be on separate "legs" in the panel.
How you would wire an electrical circuit?
There are many types of electrical circuits and each one is wired differently. Without knowing the specific circuit that needs to be wired, this question can not be answered.
How do you wire dedicated circuits and test for that?
Dedicated circuits are ones that originate at the power panel and supply power to a pre-determined device(s). You test them with a multimeter, or other such electrical test equiment.
Does using a higher than necessary ampacity in electrical circuits cause a higher electrical meter reading?
No, the electrical meter reads watts by multiplying the voltage and the amperage used in electrical circuits. Using oversize wire does not govern the amperage flow to the load. The load resistance in the circuit is what governs the amount of current that flows through the wire. This current in the load circuit is multiplied by the voltage applied to the circuit at the electrical meter. The product of this multiplication is wattage, multiplied by the amount of time the load is on, is what the electrical utility bill is based on.
Can copper wire would be a good conductor of electricity?
i sure hope so. copper is the most common metal used for electrical circuits.
Do you join brown electrical wire to red electrical wire and blue electrical wire to black electrical wire?
yes
What is the function of fuse?
In electrical engineering, a safety device that protects electric circuits from the effects of excessive electric currents. A fuse commonly consists of a current-conducting strip or wire of easily fusible metal; whenever the circuit is made to carry a current larger than that for which it is intended, the strip melts to interrupt it.
