Or replace it they are not expensive.
Green stuff on electrical plug.
Moisture has corroded the copper.
Wd 40 will clean and replace the moisture on the wires and in the box.
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If connected to a battery the subsequent corrosion can take the form of acid leakage.
Aug 3 2010 1.
Shut off power remove the outlet.
The outlet spray it then blow it out and you will be good to go.
Apparently the copper wires in the plug are corroding.
Electrical wires are usually made from copper and as such prone to oxidation.
Therefore whenever this green substance is found at socket outlets etc.
It should be removed and the terminations cleaned gloves should be worn otherwise it is possible that tracking overheating may occur.
Spray with wd 40 and wipe it down.
The green substance is a combination of copper oxide and plasticiser which is conductive.
Replace the outlets with air tight electrical boxes or at least put gaskets under the face plates and anti draft plugs into the unused outlets.
The electrical wires will appear to have a white or greenish powder coating on them and they will lose their conductive properties.
Anytime copper corrodes it gives off a green film.
This is a 24 year old 10 color set that has been sitting in a closet for years.
I was walking down the hall at work and noticed some green stains on the receptacles at work.
The green liquid is definitely coming out of both prongs on the plug only when current is passing through it.