OK, here we go. My EB150 manual says 500 watts max solar input, 16-60 volts and 10 amps max. Period. End of story. Error code E017 will be triggered by an over voltage condition on the PV input. Nothing states what that value is, so I'm going to go with the manufacturer's guidance.
Is there going to be someone who says "yeah, but I charge at 8 kilo-volts and 2 mega-amps"? Why of course there will be, we're on the internet! Let's do this thing called being safe, protecting our equipment, and warranty by staying within the manufacturer's specs.
The best configuration I could find after much research was 3x Newpowa NPA160S-12H in series. Voc (volts open circuit)19.83 volts (multiplied by 3 = 59.49 volts, just under the 60 volt limit of the original EB150). Isc (amps at short circuit) 9.75 amps (just under the 10 amp limit of the EB150). 467.9 watts theoretical max output for he array itself using Newpowa's data sheet figures of 16.67 Vmp (voltage at max power) and 9.33 Imp (amps at max power) . Now we factor in the minimum 88% efficiency of the EB150's charge controller, and we see a max of 411.7 watts charging power to the batteries.
If my solar conditions were so perfect I could get over 400 watts actual charging power with the above configuration, for the supposed peak 4.13 "sun hours" in my area, I'd put on a kilt and dance an Irish jig, because I would be able to fully charge a depleted EB150 on a single sunny day. That said, let's consider a few things:
1. It's a pretty rare situation where I'm going to fully deplete my EB150 in a single day.
2. The average 4.13 peak sun hours are peak sun hours. I will in fact get some degree of output from the array during all daylight hours. The shortest day of my year is just over 9.5 hours (from sunrise to sunset), and I'll estimate I get 5.5 hours of usable sunlight (some degree of output) on that day.
3. For my usage, I have over 3 days of autonomy with the above configuration. Your needs may vary.
4. If you need more capacity, figure out what that amount would be and sell your EB150 to replace it with something larger. I am considering this as I write since I really want to be able to run a table saw (1800 watts) which my EB150 will not power.