What happens when a solar panel makes too many amps?

A note with Q5 is interesting

"Also, to avoid unnecessary stress on the controller’s electronic components, it is recommended that when the controller is installed in a sustained warm temperature climate, the controller not operate at full power, close to its maximum ambient temperature, for prolonged periods of time."

Was it the OP with the three breakers one for each panel? If so, and the situation is as above, just switch off a panel or two. Usually it would only be for a couple hours mid-day though, which they seem happy with.

howardwheeler wrote:
I know it's safe. I guess what I meant was where does the excess power go?

Same place the power goes when the panel is not connected to anything.
The excess electric power is not actually produced. As the amps are throttled back the voltage rises to approach Voc and efficiency drops off.

It doesn't go anywhere. It doesn't get produced. The charge controller moves the Power Point away from Maximum, thus limiting the production.

Q2 and Q3 here

http://support.morningstarcorp.com/wp-content/uploads/2014/07/MPPT-Technology-Primer.pdf

The excess power does not go anywhere--it is not produced.

I know it's safe. I guess what I meant was where does the excess power go?

MS-MPPT-60 will reduce voltage to limit current to 60 amps. Or lower if you program it.

Also GOOGLE

SOLAR PANEL CLOUD EDGING

Read up on the Morningstar site about "over-panelling" and how that is ok with their MPPT controllers.