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There are assumptions here: (1) The "earth" wire is an outstanding conductor with low resistivity, and (2) All the earth conductors are ultimately tied to earth at some point. If it's building wiring, that's usually done in the electrical box providing service into the building. If it's coax cables in a piece of electronics, then it's the power supply neutral point. (3) It costs less to build a cable without an insulating jacket than one with insulation. Under these conditions, all earth conductors are at the same potential, so that if they touch, no current will flow between them. Leaving them bare produces no adverse effects at the lowest cost. Now, obviously, if another bare wire that is not at earth potential contacts an earth conductor, that can result in current flow (a short). One can argue that the earth conductor is as much At Fault as the other conductor, but insulting just one of them will serve to protect them from touching. In actual fact, there is always some resistivity to the earth conductors, and if current flows, a voltage drop will be manifest. There are times when this matters a great deal, such as the control or suppression of noise in electronic systems or medical medical instrumentation when shock hazard can be fatal. However, this is a big topic and a small space like this won't do it justice.
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What is the color of a ground wire?
Answer for USA, Canada and other countries using similar 60Hz household electricity supplies "Ground or "earth" wire has green insulation or is just bare uninsulated copper wire. Answer for Europe and other countries using similar 50Hz household electricity supplies "Earth" or "ground" wire has green/yellow striped insulation or is just bare uninsulated copper wire which should always have a green/yellow striped insulation sleeve put over it when it comes into any terminal boxes or plugs.
Why is copper wiring coated with insulation?
Because if the wire is "hot", that is, has electricity flowing through it, and you touch a bare wire, then YOU become the "ground" and complete the circuit. This will cause at the least a bad shock, and at the worst it will cause death. The "ground" wires are bare, but that is because they do not have electricity flowing through them unless something shorts out (ie a "hot" wire which is normally black or red in color touches a ground or neutral wire which is normally white. The "ground" wires are either bare or have a green coating.
When you connect earth wire in ceiling light does not work when connecting earth from light direct to earth wire coming from ceiling trips out when take earth wire out light works?
By earth wire I am assuming you mean the bare wire and that a black and white wire are connected to the light. If when you connect the earth wire and breaker trips then there is a short between black and earth. It could be a bad ground connection, an internal short in the light fixture where black wire "hot" is connected to metal on the fixture through a nick in wire.
Why is your earth wire is glowing on the live circuit?
In the visible spectrum or the infrared? Either way, if your earth wire is glowing you have a problem. Your earth wire is not intended as a current carrying wire. If the wire is loaded to the point that it glows then your circuit/breaker is not wired correctly and the earth wire is being used as an unintended path and is a hazard. Earth wires are not sized properly to carry current.
What is the third green wire on an electric drill is the wire?
it is the earth wire
You can get it from touching uninsulated wire?
voltage
Difference between uninsulated and insulated wire?
An Insulated wire is one which has a coating of Heat Shrink Tubing, usually for safety; and an Uninsulated wire on the other hand does not have a coating of Heat Shrink Tubing.
What is the color of a ground wire?
Answer for USA, Canada and other countries using similar 60Hz household electricity supplies "Ground or "earth" wire has green insulation or is just bare uninsulated copper wire. Answer for Europe and other countries using similar 50Hz household electricity supplies "Earth" or "ground" wire has green/yellow striped insulation or is just bare uninsulated copper wire which should always have a green/yellow striped insulation sleeve put over it when it comes into any terminal boxes or plugs.
Can uninsulated wire be used in place of enamel wire?
Depends on what you are using it for:short point to point connection - yes, usually but be careful to avoid shortscoil winding - NO NO NO, the coil will be completely shortedgeneral wiring - NO NO NO, use hookup wire instead as the enamel is too fragile
Why is copper wiring coated with insulation?
Because if the wire is "hot", that is, has electricity flowing through it, and you touch a bare wire, then YOU become the "ground" and complete the circuit. This will cause at the least a bad shock, and at the worst it will cause death. The "ground" wires are bare, but that is because they do not have electricity flowing through them unless something shorts out (ie a "hot" wire which is normally black or red in color touches a ground or neutral wire which is normally white. The "ground" wires are either bare or have a green coating.
Why wont birds die on a wire?
Mainly because wires are insulated. In the case of being on an uninsulated wire the bird isn't grounded since both feet are on the wire.
What is a ground wire?
A ground wire is a typically uninsulated copper wire. The intent is to connect the wire to an electrical appliance or fixture to provide electricity a path to ground in the event of a short, thus preventing electrocution.
Why insulated copper wire is used in making solenoid?
If the solenoid wire is not insulated the number of turns will be reduced by the uninsulated wires touching and shorting out the turns.
Can you connect a 6mm earth wire to a 2.5 mm earth wire?
A 6 mm earth wire can be used to replace a 2.5 mm earth wire, but if there is an existing 6 mm earth wire it must be 6 mm all the way to the earth, and not replaced by a smaller wire between it and the earth connection.
Wire that discharges excess electricity to the earth?
It is the earth wire
When you connect earth wire in ceiling light does not work when connecting earth from light direct to earth wire coming from ceiling trips out when take earth wire out light works?
By earth wire I am assuming you mean the bare wire and that a black and white wire are connected to the light. If when you connect the earth wire and breaker trips then there is a short between black and earth. It could be a bad ground connection, an internal short in the light fixture where black wire "hot" is connected to metal on the fixture through a nick in wire.
What does green wire indicates?
Earth wire
