Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,043
I've lived without MLPE so far.
Once I got a clamp DC ammeter, I found a low string. isolating every panel (ground mount not roof), I tested and found 15% of panels were bad. One brand of three I used.
Newer codes require RSD, so I've bought Tigo "Fire" modules. No monitoring or optimizers. I do hope RSD is triggered when AFCI triggers, because I think that will be more effective.
Do the math twice, get your installer to do the modification if appropriate, but I think 13s & 5s will work much better.
Can those optimizers do doubling of current? Because that's the way for them to address partial shading on half-cut panels.
You can experiment shading cells.
Do not leave hard shade over a cell for long while in direct orthogonal sun. Often, bypass diodes can't handle that, only lower current of off-angle sun.
Once I got a clamp DC ammeter, I found a low string. isolating every panel (ground mount not roof), I tested and found 15% of panels were bad. One brand of three I used.
Newer codes require RSD, so I've bought Tigo "Fire" modules. No monitoring or optimizers. I do hope RSD is triggered when AFCI triggers, because I think that will be more effective.
Do the math twice, get your installer to do the modification if appropriate, but I think 13s & 5s will work much better.
Can those optimizers do doubling of current? Because that's the way for them to address partial shading on half-cut panels.
You can experiment shading cells.
Do not leave hard shade over a cell for long while in direct orthogonal sun. Often, bypass diodes can't handle that, only lower current of off-angle sun.
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