schmism
Solar Addict
When considering using a combiner box at your PV array (such as MidNite solar PV combiner)
How does one size the breakers/fuses?
Hypothetically a 500w panel outputs 10.29A @48v
If you ran this panel into the above combiner box, what would you install for a breaker? 10A and not pull the theoretical max watt off the panel - which I think my brain says you could "regularly" trip this as the pannel is capable of higher output and a mpp SCC would be be looking to draw those watts.
Is there an effective use of these breakers to provide over current protection to the panels? Or are they mostly seen as a disconnect for the panels at the panels?
So in the above case what do you use? 10A 15A?
If building an array, what do you spec? Pannel spec plus some overhead? (10%?)
To be clear I see this as a different use case than the fairly clear cut use of DC breaker as over current protection on something like a battery bank.
How does one size the breakers/fuses?
Hypothetically a 500w panel outputs 10.29A @48v
If you ran this panel into the above combiner box, what would you install for a breaker? 10A and not pull the theoretical max watt off the panel - which I think my brain says you could "regularly" trip this as the pannel is capable of higher output and a mpp SCC would be be looking to draw those watts.
Is there an effective use of these breakers to provide over current protection to the panels? Or are they mostly seen as a disconnect for the panels at the panels?
So in the above case what do you use? 10A 15A?
If building an array, what do you spec? Pannel spec plus some overhead? (10%?)
To be clear I see this as a different use case than the fairly clear cut use of DC breaker as over current protection on something like a battery bank.