What is the difference between earthing and Lightning?

Answer 1

In the UK it is referred to as earth but in the US is known as ground, no difference.

Grounding is for the protection of equipments from heavy currents due to the occurrence of faults in the system in which they are connected.earthing is done for the protection of operators using the equipments.in this case currents will be well within the normal rated value.

The different between grounding and earthling is that, grounding is the negative point of the power supply output which is connected with the body of the device earthling is the medal point of the power AC plug which is connected between the earth and power supply body.

There is no difference whatsoever. 'Grounding' and 'earthing' are simply American and British terms for exactly the same thing.

The two terms are simply regional variations of the same thing. US uses the term ground, Europe (among others) uses the term earth.
There is no difference. 'Grounding' is the US term, whereas 'earthing' is the British term, for exactly the same thing.

In some cases, Americans refer to an 'earth ground' to differentiate it from a 'chassis ground'.

Answer 2

First of all, there is no difference between "earthing" and "grounding", since "earthing" is being used in Europe, whereas "grounding" is more common in the USA.

An earthing (or grounding) transformer is a transformer which is used in a substation in order to derive the substation LowVoltageAC supply from the main power transformer. If you use an earthing (or grounding) transformer in order to provide an artificial neutral in a network without a neutral (where for various reasons, only delta windings are used at a particular voltage level), you refer to such a transformer as a neutral earthing (or neutral grounding) transformer.

Answer 3

Non-electrical answer

The ground is the surface of the earth. Its as simple as that.

Electrical answer

No difference. North American folks (and perhaps others) say ground, Europeans (and perhaps others) say earth. Both are referring to a wire or terminal that eventually terminates at an electrode that is buried in the dirt.

Neutral is different and can be thought of as "the return path" for its respective circuit, even though there may exist a neutral to ground voltage due to voltage drop (thus neutral does not necessarily have to be at ground potential). Neutral is tied to ground at one point in the building, typically at the service entrance point which is always "upstream" of all the circuit breakers in the main breaker panel.

Thus you can say the neutral conductor is "grounded", but you would not say it is "ground", because that term (in building wiring at least) refers to the special conductor reserved for safely conducting away a fault current when something goes wrong.
earth is an spherical heavenly planet while ground is solid surface mainly of soil rock etc.

Answer 4

Answer for USA, Canada and countries running a 60 Hz supply service.The bare copper "earth wire" normally carries no current. Its purpose is to provide an emergency path for any accidental contact between a hot wire in an appliance and the metal parts of the appliance that the user may come in contact with.

In North America both the "neutral" and the "earth ground" wire are connected together at the household's circuit breaker panel and both are connected to a ground rod near the utility meter.

For 120V circuits, the "neutral" is distributed in the house wiring as the white wire of duplex wiring. The black wire is hot. The "hot" wire is protected by a circuit breaker. In most households built since the 1950s, the power is distributed with a ground wire as well. This wire is a bare copper wire in the same sheath as the white and black wires.

In a properly operating circuit, the current supplied through the black wire is returned to the circuit breaker panel in the white wire - the white wire is a "current carrying" neutral wire.

For 240V circuits, where both 120V and 240V are required at the load, the connection from the breaker box is made with 4 wires: there are 2 "hot" wires, red and black, a white neutral wire, and a bare copper ground wire. The 240V part of the load gets current on one of the hot wires and returns that same current on the other hot wire. The 120v parts of the load get current from one of the hot wires and returns that same current on the neutral wire. The 120V loads can be connected to either hot wire.

A well designed appliance will have some of the 120V loads connected to the red wire and other 120V loads connected to the black wire. The neutral wire will then only carry the difference between the 2 120V load groups. The 2 hot wires are protected by a 2-pole circuit breaker so that both are always disconnected at the same time in the event of an overload, ground fault, or if the user just needs to turn off power to the circuit.

For 240V circuits, such as hot water heaters, where only 240V loads are to be serviced, the practice is to use only the 2 hot wires and the ground wire since there are no 120V loads to be maintained. This saves on wiring costs.

More details

US NEC (and possibly other) usage: Earth ground is a protective ground, used to shunt fault current and trip the protective device without electrifying the device enclosure. Neutral is the current return path for hot. The two are connected together, at the distribution panel and also at the street, but the intent is that no current flow on earth ground, except during momentary fault conditions while the protective device performs its detection and isolation function.

In a properly balanced system, the hot currents balance each other, so that the total neutral current is also zero. For individual systems, this is not completely possible, but we strive to come close in aggregate. This balancing allows maximum efficiency of the distribution transformer's secondary winding.

Earth having zero potential whereas neutralmay have some potential. That means neutral does not always have zero potential with respect to ground.

Ground or earth in a mains electrical wiring system is a conductor that provides a low impedance path to the earth to prevent hazardous voltages from appearing on equipment . The terms "ground" (North American practice) and "earth" (most other English-speaking countries) are used synonymously here.

In normal operation a grounding conductor does not carry any current. Its purpose is to be there to carry current when a fault condition arises in a circuit, thus causing the relevant circuit breaker to trip or protective fuse to blow.

Neutral is a circuit conductor (that carries current in normal operation), which is connected to earth (or ground) generally at the service panel with the main disconnecting switch or breaker.

Earth is also called Ground.

North America folks (and perhaps others) say ground, Europeans (and perhaps others) say earth. Both are referring to a wire or terminal that eventually terminates at an electrode that is driven into the ground.

Neutral is different and can be thought of not as as "ground" (even though it is "grounded" at the main circuit breaker panel or fuse box) but, more properly, as the "return path" for its respective circuit.

There may exist a neutral to ground voltage due to voltage drop in the wiring, thus neutral does not necessarily have to be at ground potential.

Neutral is tied to ground at one point in the building, typically at the "service entrance", which is the correct term to use. The main circuit breaker panel or fuse box is usually located very close to the service entrance. Thus you can say the neutral conductor is "grounded", but you should not say it is "ground", because that term (in building wiring at least) refers to the special conductor reserved for safely conducting current during a fault.

Answer 5

System grounding is done by connecting a conductor of a circuit to the earth to keep the voltage stabilized. Equipment grounding is when all metal frames of the equipment and conductors are grounded by a permanent connection. This grounding is done in case of an insulation failure.

Answer 6

They are the same thing. Earth and ground are the same thing. A ground/earth fault is a fault where part of the current returns back through a path other than the opposing hot or, more critically, neutral. A neutral/earth fault is dangerous because the circuit will continue to function normally, but the hot and neutral leg currents are imbalanced, and the chassis can become energized. Also, the earth conductor is not rated to carry operating current - it is only rated to carry momentary fault current.

Answer 7

what is major difference shielding & grounding?

Answer 8

From the sky or from the earth up.!