Look at arrangement of conductors in meter socket.Now that you mention it, the distribution is at a lower elevation than the socket
The only corrosion was on the neutral but a little on the phase wires which are below, but closer to level with the socket
I now believe the wicking theory
With some kind of acid environment at the socket
I have a video somewhere from 5/6 years ago
where we had some 750 MCM wires with the
water just coursing through them
come out the other end like a garden hose.
It was ridiculous
And who says Water elec don't mix
The white is worst because what I said before. Incoming neutral and outgoing neutral at the meter socket line up vertically. (horizontally in your image, so gravity must be a horizontal force in your world) Any water following the incoming neutral drips right on to the outgoing neutral. The ungrounded conductors are angled and not vertical, this lowers the chance of transferring as high of a percentage of incoming water onto the outgoing conductors.the other thing is that the red conductor is really corroded at the main cb.
it also is corroded at the meter socket.
the black wire is ok at the socket and was easy to unscrew the lug at the main cb.
somehow the white is the worst, with the water apparently running right thru it.
the red wire is the next.
i don't know how the water jumps across the cut wire on other side of meter.
maybe through the meter~!
and the black is fairly well removed from the water.
The world is a mysterious place. If you leave an ice chest with the lid closed sitting outside for a few months, when you open it it will have several inches of water in it. Why is that?Noting that this meter socket is mounted on stucco, one thing come to mind, was the stucco pressure washed in the last year with a acid or alkaline based cleaner?.
Pressure washers are like mice, they will get into the tightest spots and can render even what should be water proof full of water, a rain tight meter cabinet doesn't stand a chance.
Not always the case, especially down south. Up north, you may open it and find one solid block of ice.The world is a mysterious place. If you leave an ice chest with the lid closed sitting outside for a few months, when you open it it will have several inches of water in it. Why is that?