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From my house there are two wires, i.e. a live and a ground wire which are placed on the power supply lines by a hook. They are not tightly jointed because of some reasons. These two wires are also in contact with air. So, after a few days some material gets deposited on the wire. As a result of which, when wind blows, wire starts shaking and power supply starts fluctuating too much throughout the day. So my questions are:

  • What is the material that gets deposited on the wire?
  • How to reduce this deposition so as to reduce the power fluctuation?
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Please pardon me for my poor english. –  user22582 Mar 30 '13 at 15:34

1 Answer 1

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If the joint is not tight, there can be arcing which will damage the metal surfaces.

If the joint is not airtight, most metals will corrode, for some metals, their oxides are less conductive.

If two dissimilar metals are in contact in a wet environment there can be an electrochemical corrosive reaction.

You need a tight join between two clean metal surfaces. Any surface oxidation should be removed before making the joint. The joint should be sealed against water. If dissimilar metals are involved it may be necessary to use an appropriate antioxidant paste.

In my part of the world, connecting household wiring to a 240V AC supply should only be carried out by qualified electricians employed by the electrical supply company. There are obvious safety issues. In particular, there are a number of different earthing arrangements - the correct arrangements need to be followed.

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There is direct contact between three things. a) Power supply lines b) Household power wires which are placed on the power supply lines by a hook c) Air. Many times due to wind, wire shakes and power start fluctuating. Tighting wires in not an possible option. So, any thing else I could try? –  user22582 Mar 31 '13 at 16:38
    
@VarunDotCuDotCc: You mean like this? –  RedGrittyBrick Mar 31 '13 at 16:42
    
Yes, but in my case, it is not illegal. –  user22582 Mar 31 '13 at 16:44
    
Any idea about this. –  user22582 Mar 31 '13 at 16:47

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