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Why we don't get shock if we touch neutral wire..we need two wires to close circuit pH and n when circuit closes current will flow around the circuit and one wire gets shocked other not why?
Wiki User
∙ 12y ago
We don't get shocked when we touch neutral and ground because neutral is grounded back at the distribution panel, so the effective voltage between neutral and ground is very low. It won't be zero, because there is current flowing on neutral, causing a voltage difference between the load and the distribution panel, but it is low enough, assuming there is no malfunction, to not cause a shock.
In the case of touching hot and neutral, or hot and ground, you will get shocked because there is line voltage between hot and neutral, and because neutral and ground are connected together, there is also line voltage between hot and ground.
Note, however, that connecting a load between hot and ground is a violation of the code and the intent of the design, because ground is not rated to carry current except in short term fault conditions - you must always connect a load between hot and neutral, or between hot and hot, as the case may be.
Wiki User
∙ 12y ago
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What happened when Volta connected the parts of his cells in circuit?
An electric current flowed around the circuit.
Where does the current flowing in the neutral wire go to?
In most power systems that I know of, the neutral bus bar is bonded to the ground bus bar in the distribution panel, so any current returning to neutral will go out to the service entrance (street power) along the ground conductor. This is the only time that current is permitted on ground, i.e. upstream of the distribution panel. However, in a properly balanced split phase or three phase system, all of the various hot legs will balance each other out, resulting in very little actual current on neutral/ground. In this case, the ground connection is simply providing a tie point, so that hot leg voltage does not rise inappropriately high. If you were to explore, for instance, with a clamp on ammeter, you might discover that neutral current for one branch circuit is counterbalanced with neutral current for an opposite hot leg branch circuit, and that the net neutral/ground current going to the service entrance is very low. In this case, the neutral bus bar is simply a common tie point.
What is ground fault protection?
GFI's (Ground Fault Interruptors) measure the difference between the hot conductor current and the neutral current. In a normal (no fault) circuit, every single milliamp of current flowing out of the hot should return through the neutral. In other words, the two currents should be equal. If there is a ground fault, at least some of the current flows from the hot. through the fault path, to ground. In this case the neutral current is less than the hot current by however much is flowing to ground. The GFI senses this difference and trips, opening the circuit. GFI's are designed to protect equipment from damage and trip at around 30 ma. of differential current. GFCI receptacles (Ground Fault Circuit Interruptors) like the ones you might find in your bathroom, and GFCI circuit breakers are designed to protect people, and trip much lower, around 5 ma.
Do voltages vary around the circuit and why?
A: Voltages varies on a circuit because current varies caused by difference in resistance
How does current flow around a circuit?
current in a circuit will flow in a unidirectional manner and when it passes through a resistor in the circuit it opposes its direction
Why neutral wire does not carry current in closed ac circuit?
The neutral wire does carry current in a closed AC circuit. Clamp a clamp on amp meter around the neutral wire directly after the circuit load and it will read the same current as is on the "hot" wire.
What does a current do in a circuit?
goes around the circuit carrying electricity all around the circuit
Does neutral wire carry voltage in a closed circuit?
The ground wire should carry no current at all, it is there in case of a short circuit to carry the (short circuit) current back to the breaker panel to trip the breaker. The neutral will carry the unbalanced load current between the 240 volt legs. e.g. L1 and N (neutral) 120 volts the load draws 8 amps. L2 and N (same neutral) 120 volts the load draws 12 amps. The difference between the two amperages is what the neutral will carry 12 - 8 = 4 amps.
What is the flow of electrons around a circuit?
current :))))
What pushes the current around the circuit?
A voltage supply is needed to operate a circuit.
Why cant you have both hands in a breaker box?
When you are working around live electricity you need to complete a circuit to get shocked. If you just put one hand in box it reduces the likelihood that you will inadvertently touch a hot with one hand and a ground or neutral with the other.
What happened when Volta connected the parts of his cells in circuit?
An electric current flowed around the circuit.
Where does the current flowing in the neutral wire go to?
In most power systems that I know of, the neutral bus bar is bonded to the ground bus bar in the distribution panel, so any current returning to neutral will go out to the service entrance (street power) along the ground conductor. This is the only time that current is permitted on ground, i.e. upstream of the distribution panel. However, in a properly balanced split phase or three phase system, all of the various hot legs will balance each other out, resulting in very little actual current on neutral/ground. In this case, the ground connection is simply providing a tie point, so that hot leg voltage does not rise inappropriately high. If you were to explore, for instance, with a clamp on ammeter, you might discover that neutral current for one branch circuit is counterbalanced with neutral current for an opposite hot leg branch circuit, and that the net neutral/ground current going to the service entrance is very low. In this case, the neutral bus bar is simply a common tie point.
What does the electric battery do?
If there is a full circuit, it will send current around it.
Why must a circuit be closed in order for a current to flow?
A circuit must be closed in order for a current to flow because it helps keep a current flow pass. When the switch is closed on a circuit there is a constant flow. When the switches open the flow is disturbed around the circuit.
What is ground fault protection?
GFI's (Ground Fault Interruptors) measure the difference between the hot conductor current and the neutral current. In a normal (no fault) circuit, every single milliamp of current flowing out of the hot should return through the neutral. In other words, the two currents should be equal. If there is a ground fault, at least some of the current flows from the hot. through the fault path, to ground. In this case the neutral current is less than the hot current by however much is flowing to ground. The GFI senses this difference and trips, opening the circuit. GFI's are designed to protect equipment from damage and trip at around 30 ma. of differential current. GFCI receptacles (Ground Fault Circuit Interruptors) like the ones you might find in your bathroom, and GFCI circuit breakers are designed to protect people, and trip much lower, around 5 ma.
What constitutes a complete circuit?
Where the current can flow around completely, without being interrupted by a break in the circuit.
