My DIY panel pumping out over 400 watts!?!?

[Sunking]

There is a great feature here that lets you block members so you don't have to see there posts.

That would be called the Ostrich Button. Just think everyone is having a good laugh at you right now and you are in the dark with your head stuck in the sand.

[bcroe]

Cell or Panel Failure

With all the things that can go wrong, I was thinking how to periodically check that all is
in order. With good sun this season, and 15% extra panels, I have been checking that
each inverter reached some clipping during the day. It can't with one of its 3 strings out.

Come winter I may not have enough sun for that method. If both inverters show similar
daily peaks, should be OK. If one is down, need to look for a weak string. I'm thinking
then to go out some time without clouds, to at least get a steady reading. A clamp on
DC ammeter could verify, all three strings are putting on similar current, or one is weak.

Then the harder part is to find the bad panel. Probably have to unplug them all on that
string, as well as open the combiner fuse. Then test panels one by one. Either a simple
short circuit current test, or use my load tester. Bruce Roe

[Mikel_NY]

(1st required post so I can see your pics) Please disregard this post

[fult7242]

Just joined

posting to see the attachment