Electric shock Question

If a person touches a live wire coming from a plug that is plugged into the socket and he makes himself the ground, will he get shocked? Does this mean negative electrons flow through the person from ground then through the live wire?

What do you mean of "...makes himself as a ground". You wont get electric shock by just touching or holding the live wire. (Don't prove it by doing this in your home, its extremely fatal if youll make a wrong action)

If a person touches the 'live wire' (not the 'ground' one) and no other part of his body touching any other conductive material that is directly connected to earth's ground (example are concrete floor, concrete wall or metallic water pipes) then he wont get electric shock. If you have noticed electrical linemen (from electrical companies) they always wear nonconductive shoes to prevent contact to earth's ground.
However if you accidentally or intended to touch the live wire while in contact with earth's ground, then you'll get electric shock. Current flows and electrons motion inside your body will be more likely to be vibrating because household lines are alternating current (AC, back and forth) of 60 Hz.

rotary said:

If a person touches a live wire coming from a plug that is plugged into the socket and he makes himself the ground, will he get shocked? Does this mean negative electrons flow through the person from ground then through the live wire?

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Better dont experiment with this on living beangs and humans!!!

The minimum current a human can feel depends on the current type (AC or DC) and frequency. A person can feel at least 1 mA (rms) of AC at 50 Hz, while at least 5 mA for DC. The current may, if it is high enough, cause tissue damage or fibrillation which leads to cardiac arrest. 50 mA of AC (rms, 50 Hz) or 300–500 mA of DC can cause fibrillation.

If an electrical circuit is established by electrodes introduced in the body, bypassing the skin, then the potential for lethality is much higher if a circuit through the heart is established. This is known as a microshock. Currents of only 10 µA can be sufficient to cause fibrillation in this case.

Body resistance

The voltage necessary for electrocution depends on the current through the body and the duration of the current. Ohm's law states that the current drawn depends on the resistance of the body. The resistance of human skin varies from person to person and fluctuates between different times of day. The NIOSH states "Under dry conditions, the resistance offered by the human body may be as high as 100,000 Ohms. Wet or broken skin may drop the body's resistance to 1,000 Ohms," adding that "high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 Ohms.

" Please do not play with high voltage.......it is LETHAL to the life"
For whole this discussion, it is assumed that the voltage of the mains is 220 volts AC.
As I got from your text, you mean, that if a person touches the Live wire and assumes himself as Ground (or neutral terminal) but isolated from GROUND or you call it EARTH, will he get shock? If yes, no he will not be shocked. But if his body is in contact with ground, HE will definitely get SHOCKED.
When the heart is in Fibrillation cycle only 10 mA can cause a CARDIAC ARREST (heart failure).

This is lethal technique and should never be attempted ...The current flows thru the conducting fibre (bundle of HIS) into the heart and causes fibrillation resulting in certain demise of the person and even others in contact with him.
Better to put a 100M/50M ohm.on live wire to earth and permit the leakage current path.
I f there is an additional current reqt . kindly lower this down to 10Kohm step by step..Simultaneously , you need to increase the power levels of the resistance used for grounding.

This guys are working on High voltage power lines , power is connected.

High power line workers - YouTube

High voltage line workers have a neon lamp detector /sensor.to check out the existence of HV with respect to ground .You dont need to touch the line or even go near it for sensing .

rotary said:

If a person touches a live wire coming from a plug that is plugged into the socket and he makes himself the ground, will he get shocked? Does this mean negative electrons flow through the person from ground then through the live wire?

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If the person is touching "ground" or something which itself is at "ground" potential, yes, he will get a shock.

The electrons change direction at the frequency of the supply. During one half cycle they will flow from "ground" to the live wire, and on the next half cycle they flow in the opposite direction, etc.

I asked the question because I wondered how the current can go through you when the current has to be in a circuit. Since that is how it goes through an electrical appliance. Does that mean if you as a person are connected to ground and touch a live wire, the current flows through you into the ground because the ground makes the circuit?

By the way I am asking purely as a theoretical question, I have no intention of touching a live wire connected to a plug socket.

rotary said:

I asked the question because I wondered how the current can go through you when the current has to be in a circuit. Since that is how it goes through an electrical appliance. Does that mean if you as a person are connected to ground and touch a live wire, the current flows through you into the ground because the ground makes the circuit?

By the way I am asking purely as a theoretical question, I have no intention of touching a live wire connected to a plug socket.

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Yes! Ground close circuit and ......:-(

Because that is used differential switch. This monitor how much current in and how much is out, if different turn off circuit and save life and devices from fire!!!

Ground of house or building must be always proper installed. This is very important!!!

Yes, current will flow. To be clear, your house has two wires, the 'live wire' and the 'ground wire', what you may not know is that electric companies connects the 'ground wire' directly to earth's ground (literally ground, soil). That's the reason why touching the 'live wire' while touching either earth's ground or 'ground wire' makes a complete close circuit, with your body as load.

tpetar said:

...Because that is used differential switch. This monitor how much current in and how much is out, if different turn off circuit ...

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Not all electrical wiring incorporates a ground fault indicator (or one of several names for the same device).
Some of them have simpkle over-current circuit breakers or even just fuses, neither of which helps in the case of line/neutral current imbalance.

Onigece said:

Yes, current will flow. To be clear, your house has two wires, the 'live wire' and the 'ground wire'

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It's line and neutral actually.

Onigece said:

That's the reason why touching the 'live wire' while touching either earth's ground or 'ground wire' makes a complete close circuit ...

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Closed circuit.

This should help rotary understand the shock risk Untitled Document

In an electrical system, a ground loop usually refers to a current, almost always unwanted,
in a conductor connecting two points that are supposed to be at the same potential, often ground,
but are actually at different potentials. Ground loops created by improperly designed or improperly
installed equipment are a major cause of noise and interference in audio and video systems.
They can also create an electric shock hazard, since ostensibly "grounded" parts of the equipment,
which are often accessible to users, are not at ground potential.

I have designed dozens of electricity supply systems for industrial equipments and control systems for
automated manufacturing , who do not use a grounded supply
The great advantage is that the electrical system will take a direct short-circuit to ground.
This does not cause any disturbance to the equipment operation
because the supply circuit or control circuit is not yet created a real short-circuit situation.
In my designs have added the alarm even smaller earth leakage,
with indication to circuit where the leak occurs.

Onigece said:

Yes, current will flow. To be clear, your house has two wires, the 'live wire' and the 'ground wire', what you may not know is that electric companies connects the 'ground wire' directly to earth's ground (literally ground, soil). That's the reason why touching the 'live wire' while touching either earth's ground or 'ground wire' makes a complete close circuit, with your body as load.

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One correction on this. There is three wires not two, one is phase, second is null (neutral) and third is ground. Ground is wired grounded localy at that building/house, and should not be connected with neutral this is very wrong! Ground wire is not neutral!!!

I can add a bit to this all.
When an Inductive (load or generator) work there is always an induced leakage voltage on the casing. Now as the tendency of electric current is always to flow from Higher voltage side to lower voltage side (exactly as the water's property) This induced voltage is higher from the EARTHS' voltage level and here if some one touches the CASING or BODY of the machine the current flow will be there through the body and if the induced voltage is high enough to cause the current flow through there will be a shock. Higher the Voltage level from the machine or to the machine, higher will be induced voltage. To over com this unwanted property of electricity, the Casing of the machine (generator or motor in general) is GROUNDED to bring the induced voltage on the casing to Earth's level a wire is connected from the casing to the earth (known as GROUND wire, too). This causes the machine casing electrical level to ground level and there is no voltage difference between casing and Earth (electrically safe on shock hazard). This ground wire in always arranged locally on the facility.

Ref. to your info that the GUY is working on a live 500KV AC line .This is a different issue altogether as the person can be on the ground and have a simple multiturn winding (aircored)with a small AC reading multimeter across it .The voltages are picked up by the turns /terminated ..and gives a reading on the multimeter for the presence of he desired voltages .
In case you need the currents flowing thru the connecting cables ,you need to use a HALL EFFECT current sensor to an earlier calibration.
However , if it is only a rough current reader , you need to terminate the coil winding as well as your multimeter to provide a calibrated current reading..

When you are near a 500KVAC power line ,the large magnetic fields generated by the current flow generates a corona discharge thru the humidity in the atmosphere.
The same crosses thru you (or any metallic/organic body)as you are a conducting media and contain water in your system.
The currents flow down to ground and affect your system. May people living closeby to power pylons bearing HV lines are even mentally retarded owing to this effect .
be careful.
vimal

The living people near the HV overhead lines do get the skin problems very often just because the CORONA effect and if the exposure is continued without break or proper care it will effect the mind's working (as said by vimalkhanna).

Continued residence of couples lowers down the sex libido and causes infertility in addition to other mental problems .
All this is owing to strong magnetic fields as well as currents leaking thru them to ground.This is valid for thatched hutments.
However , RCC construction with steel crisscrossed on walls and roof lowers down the risk factor .
All this proves /shows the leakage current thru the human/organic mass /living mammals
vimal

It was sort of a funny story when we first heard about it a few years ago: A dairy farmer living in Wisconsin near high voltage utility company transmission lines couldn't turn out the lights in his barn. Even with the switches in the off position, night after night after he had finished his chores, he'd go back out to the barn to find the light bulbs still glowing from the electrical charge hovering in the air. The cows were none too happy about it either, because the constant light prevented them from sleeping, and they gave less milk.

But the story doesn't seem so funny any more -- not after the spate of recent reports of children developing deadly illnesses or adults dying prematurely of rare diseases -- all apparently because they had the misfortune of living near high amounts of electrical current.

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This is what a long artical specifies the Effects Of High Voltage ..............!
Really interested.
Midwest Today: Do High-Voltage Power Lines Cause Cancer?
Some technical literature about electrical effects.
OSHA Construction eTool: Electrical Incidents - How Electrical Current Affects the Human Body