[mikehinton]

While there are multiple buildings on the one circuit, I should add that one building has a total of one duplex plug that powers an automatic sprinkler system, while another building has one duplex plug and an overhead light fixture with a 60-watt bulb (a woodshed). The barn has the majority of the outlets (I think there are 10, and two of those are controlled by switches to power fluorescent lights). So, loads aren't very high.

To answer the question about rain, we did have a couple of fairly heavy rains here earlier this season, but certainly not the heaviest we've had since the circuits were installed. Unless the underground conduit has been damaged, I don't think any water could have entered where the branch lines from the sub panel are contained.