Morningstar 30amp solar charger display

Was there a misunderstanding here ?
Like PTs post, I test my 18 amp (max full sun) system by loading the batteries w/ a 50 amp carbon pile load. If I see 14 to 16 amps, I know everything is operating at max amps available. Maybe me that didn't understand Wizards post

MrWizard wrote:

pianotuna wrote:
It is fairly easy to test this. In good solar conditions, turn on a large load. If the display shows a larger number--then you know it is set to measure what is leaving the charge controller, and not what is coming in.

sorry PT
yes the load might show an increase, but
the controller ALL ways shows what is being produced and sent to the system
NOT what might be available,
think about the electric meter on the side of the house
it shows what you are using
NOT the MEGA WATTS available on the utility power line

if the batteries and house circuits only take 7amps, them that is all that is being produced, not 30amps , that extra difference is
"Potential Power" not being produced or utilized
if it was being produced and not used the controller would be dissipating it as heat...OUCH
it is voltage VRS battery circuit resistance , which limits the flow to 7 amps, even if more is available

if you turn on a load and it goes up then more is available
if the flow does Not increase, like late afternoon or early morning, then that is all the solar energy available

but always the meter shows BOTH... what is going to the system, IS what is being produced