Earthing In Electrical Fitting | | | |
In electrical works, earthing or earthed means to connect electrical system to general mass of earth in such a manner as it ensures an immediate discharge of electrical energy without danger at all times. The earthing is helpful to enhance voltage. It saves human life from sudden electric shock. When proper earthing is done in building, it saves building of thunder effects i.e. from fall of natural cloud lighting.
In general earthing is not provided in building at the time of electrical fittings either due to ignorance/carelessness or to save expense on earthing. The earthing is most essential part of electric work which must be provided to protect from any mishap. The following are tips on implementation of earthing.
- Earthing connection may be of either copper or galvanized iron.
- Normally GI pipe or plate is used but copper pipe or plate should be used where the soil is corrosive.
- Electric earthing may be either pipe or plate earthing.
- Dry earth has more resistance whereas moist earth has less resistance.
- Low earth resistance is required to give effective earthing protection to electrical fittings.
- The location of earth pit should be such where the soil has reasonable chances of having moist.
- If possible earth plates or pipes are located near water tap, water drain or rain water pipe.
- Earth wire and earth plate must be of the same metal.
Charcoal and salt must be filled in the earth pit around earthing pipe or plate.
The position of the earth plate or pipe when fixed should be clear from all building foundations.
A masonry enclosure should be made over earth pit.
Entrance, pavement and roads are definitely avoided for locating earth pit.
Inside building in addition to all electrical appliances, all switch boxes; meter boxes etc. should be earthed also.
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| 10 Comment(s) |
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| | By Anonymous - On 5/8/2012 9:39:41 PM | | useful information |
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| | By Anonymous - On 11/13/2011 11:44:36 AM | | how to earthing to a room in my house..to avoid power flatuation |
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| | By Anonymous - On 7/25/2011 11:11:00 AM | | Pl give detailed calculations for earthing according to floor area or electric load/type of electric equipments used.Which type of earthing is better gel chemical or traditional charcoal & salt type? |
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| | By S L Gupta - On 5/24/2011 1:21:57 PM | | There are many chemical earthling systems one of which is as below. The underground earthing electrode: The construction details of the RECONS Chemical Earthing Electrode certified earthling system are as bellow. There is a solid conductor (highly galvanized, enclosed inside another highly galvanized Chemical Ear thing Electrode structure. The space in between is filled with anticorrosive & conductive compound. The electrode composite system which is firmly packed / welded & sealed with sealant is ready to use. |
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| | By geebee - On 5/24/2011 10:59:14 AM | | THE CONTENT IS GOOD. PLEASE DISCUSS ABOUT THE CHEMICAL EARTHING METHOD, FOR PLACES WHERE WE ARE NOT ABLE TO PROVIDE MOIST EARTH FOR LONG TERM. THANKS |
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| | By Anonymous - On 6/5/2010 4:22:55 PM | | what is the procedure for earthing or how will it do |
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| | By Anonymous - On 5/27/2010 1:58:43 PM | | the feedback was good, thank you. my question is, if I wish to provide earthing to electrical equipment in a 15 metre square double storeyed building, how many earth pits are required and what are the dimensions of the pits. how much charcoal and salt should I fill in each pit? |
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| | By olude - On 5/4/2009 6:13:48 PM | | need to know more about bricks |
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| | By sudhakar - On 1/9/2009 8:24:55 PM | | Helpful information |
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