PV panel combiner boxes

I have a question regarding the practice of daisy chaining PV panels together. 

I recently read an article online indicating that doing so may quickly exceed the rating of the terminal strip inside the junction box of the PV panel.  The article stated that the terminal strips inside the junction boxes of most panels are rated at 15Amps.

For example...  if you had 4 panels daisy chained together, each producing 7Amps, you would end up with a total of 28Amps at the terminal strip in the last panel exceeding the rating of 15Amps.  Does this sound correct? 

Both the schematics that came with the solar module and my charge controller show panels daisy chained together. 

Can anyone shed some light on this for me?

Thanks!
Steve