panel wire AWG to controller
Ok so the ts-MPPT-60 is on its way, I put the card board cut outs on the roof just to make sure the panels fit as I thought and now on to more planning. I check a few voltage drop calculators for t...
Forum Discussion
Testing comparisons require blue sky all day (no clouds to make variety) and no trees etc from sun-up to sundown arc. (or same arc for each test) You need to run a load all day to keep the battery voltage from going up and reducing your amps. That battery voltage has to be the same each test if using MPPT which does better on low battery.
In real life you never get the daily AH haul possible because battery voltage goes up and amps taper. You might do some sporadic loads in the afternoon and get some of those AH.
If you have a clear arc, in theory you can do from sun-up till high noon and just double that for the day. That lets you do two tests a day, second one from high noon till sundown.
Location is not always helpful for that mirror image idea. Eg if sunrise is over the sea but sundown is over the land, you get more moisture in the air in the morning where the sun is than in the evening where the sun is now.
Despite all the testing difficulties, you can get consistent results (repeatable) close enough to learn what you need to know using your meter and the rest of your existing set-up. You don't have to be a science lab to the nth decimal point for getting good enough results with the solar.
Except when your results don't match the pre-conceptions of some folks, they will pooh-pooh your tests for not being scientific enough :)
In real life you never get the daily AH haul possible because battery voltage goes up and amps taper. You might do some sporadic loads in the afternoon and get some of those AH.
If you have a clear arc, in theory you can do from sun-up till high noon and just double that for the day. That lets you do two tests a day, second one from high noon till sundown.
Location is not always helpful for that mirror image idea. Eg if sunrise is over the sea but sundown is over the land, you get more moisture in the air in the morning where the sun is than in the evening where the sun is now.
Despite all the testing difficulties, you can get consistent results (repeatable) close enough to learn what you need to know using your meter and the rest of your existing set-up. You don't have to be a science lab to the nth decimal point for getting good enough results with the solar.
Except when your results don't match the pre-conceptions of some folks, they will pooh-pooh your tests for not being scientific enough :)
