JIMMIE wrote:
Sometimes two pieces of metal tapping together in the wind can cause
it.

When I lived in AZ, my neighbor had an electric fence
that was no bother except when it was windy. It was
a fabric fence woven with embedded conductors. There
was a piece about 10 inches long at the knot at the
end that shorted out to the pole when the wind blew.
Snipping it off cured the problem.
--
73, Cecil http://www.w5dxp.com