I agree with the guy that they do seem to do that. If you had a
licensed electrician put the thing in I would not sweat it. If though
the feed somehow could have gotten wet, that's what gfci is intended to
react to, which may indicate some sort of leak somewhere ? Did they
run the outdoor wire thru a conduit and all that jazz ?


If it does it ONCE, and you don't see an obvious reason for it,
chalk it up as an aberration. if it KEEPS tripping, then you
have a problem.