earthing
- Thread starter burger
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As Breezer would say try doing a search on this forum (earth, earthing, earth bonding) It has been mentioned here many times before.
Also you may find this site helpful here As i understand it is a comlex web of many different factors. Electricity as you probably are aware, go's to the earth the shortest way possible, if that's you then it's you. The purpose of professionaly wired earthing within an house is to direct the electricity if needs be to the safest route down to earth. The earth wire acts as the root for the electricity to travel down. FWL and others alike on this forum are able to give a more detailed description in the why's and how's of this area. As i see it earthing is an integral and essential part of any household wiring and i think i am correct by saying that the minimum size of earthing cable which you would use for earth bonding i.e. a single earth cable running from the consumer unit to the necessary areas needs to be 6 mm2...
Also you may find this site helpful here As i understand it is a comlex web of many different factors. Electricity as you probably are aware, go's to the earth the shortest way possible, if that's you then it's you. The purpose of professionaly wired earthing within an house is to direct the electricity if needs be to the safest route down to earth. The earth wire acts as the root for the electricity to travel down. FWL and others alike on this forum are able to give a more detailed description in the why's and how's of this area. As i see it earthing is an integral and essential part of any household wiring and i think i am correct by saying that the minimum size of earthing cable which you would use for earth bonding i.e. a single earth cable running from the consumer unit to the necessary areas needs to be 6 mm2...
burger said:could someone please explain to me the purpose of connecting the earth wire to the copper piping....and how the earthing system works ...i have always wondered & would love to know....
And so you shall. Read this
It's not as simple as that. You might need 10mm, or 16mm. Or even 25mm, although that is very unlikely.andemz said:
here
B
Big_Spark
The TLC piece isn't overly informative really.
Here are a couple of reasons.
1: By connecting an electrical supply system to the general mass of Earth, the potential difference between Earth and Neutral is reduced to zero. If this did not occur then the neutral conductor would possess a potential difference in respect of earth that could potentially be dangerous.
2: Exposed and Extraneous metalwork is connected to earth in order to provide a path for fault currents. Should this path not exist then metalwork could remain live following a fault. If this happened then a person touching that metalwork would complete an electric circuit, thus recieving an electric shock, probably fatally.
3: The connections to Earth, and the Neutral being at Earth potential provide another level of safety in the event of a fault occuring. As the neutral and earth are tied to the same electrical potential in respect of the live conductor, any fault that allows current to flow form the live to either the earth or the neutral will encounter less resistance than it would flowing through a machine or other electrical device. The result is that this virtually resistance free path allows the flowing of huge currents via the fault, this huge current flow is stopped due the intervention of overload protective devices that will not allow such huge currents to flow.
Hope this simplification helps.
Here are a couple of reasons.
1: By connecting an electrical supply system to the general mass of Earth, the potential difference between Earth and Neutral is reduced to zero. If this did not occur then the neutral conductor would possess a potential difference in respect of earth that could potentially be dangerous.
2: Exposed and Extraneous metalwork is connected to earth in order to provide a path for fault currents. Should this path not exist then metalwork could remain live following a fault. If this happened then a person touching that metalwork would complete an electric circuit, thus recieving an electric shock, probably fatally.
3: The connections to Earth, and the Neutral being at Earth potential provide another level of safety in the event of a fault occuring. As the neutral and earth are tied to the same electrical potential in respect of the live conductor, any fault that allows current to flow form the live to either the earth or the neutral will encounter less resistance than it would flowing through a machine or other electrical device. The result is that this virtually resistance free path allows the flowing of huge currents via the fault, this huge current flow is stopped due the intervention of overload protective devices that will not allow such huge currents to flow.
Hope this simplification helps.
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Big_Spark
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