Today was productive.
The battery was fully charged before noon and the house was running totally off of the Enphase system. So I took the opportunity to shut down the XW and finally move the DC wiring into the new breaker panel.
![IMG_4892.jpg IMG_4892.jpg](https://diysolarforum.com/data/attachments/210/210186-a45fca18c478c66b2ada190aa50457a5.jpg)
The box filled up. I had to bend the terminals going into the breakers from the bottom. When I tightened the cable clamps, it bent the DIN rail as it pushed the wires back. I used ferrules on the 2/0 cables, but the proper size for the cable would not fit in the breaker. You would think a 125 amp breaker would hold a 2/0 cable, but even just the bare fine strands would not all fit in. I used 1 size smaller metric ferrules and got over 90% of the strands to go in. The amount I ended up cutting off would maybe make a #12 wire. It's not the best solution, but it is still better than using just 1/0 cable. The wire on the top of the breakers is only #2 AWG so the loss in my connection is not a factor.
My biggest concern with this panel is still the Chinese breakers. Running at just 30 amps, I saw 0.050 volts drop across each pole of the beaker for a total 0.1 volt drop under a basic load. I will monitor it close for a few days and check for any heat build up.
I did figure out one cute trick. The Victron charge controller is rated to wake up a completely flat dead battery. The XW-Pro inverter has a very big capacitor bank in it. I could not find my big 8 ohm resistor I normally use to pre charge the caps. So I turned on the breaker for the Victron charge controller to the main bar feeding the XW inverter, but I left the battery breakers off. When I turned on the breaker for the solar panels to the Victron, it powered up from the solar panel voltage and ramped up it's output current, nicely charging the capacitors. It took a good 15-20 seconds to pull the caps up to 57 volts. The charge controller went to float mode and just held the caps up at 57 volts with the inverter pulling it's 30 watt idle load. I then switched on the two battery banks which were also clos to 57 volts as they were full when I started with the re-wiring project. The batteries were about 0.4 volts lower, so it pulled the charge controller output down enough to force it back into bulk charge.
With the new panel, I now have a few options. Before, all the power had to go in/out through the old battery, and the new battery was just ganged onto it at the disconnect switch. Now they are on separate breakers and I can unplug either one at the Anderson connector and the system can run on the other battery with no issues. The total path from the XW to each battery is now nearly equal, so they should share the current and ripple a bit closer. The Charge controller is also now on the bus "blocks" with a more direct current path to the XW. It will be interesting to see if their voltage readings are closer now. Here are two thumbnails with the cover on and the door closed.
On a different note... I got my So Cal Edison bill for Mar-Apr and it is kind of funny.
I do not know how they calculate the value, but they issued a "California Climate Credit". My "Basic Charge" was just 93 cents, so they tacked on $8.77 for the "balance of minimum charge", and the other non bypassable charges all totaled up to $10.59, but with an $86 climate credit, my credit balance increased to over $230
On the energy charges, I net exported 301 KWHs. For that energy, they increased my energy credit by $81 to a total now of $118 at 7 months into my billing year. That $81 works out to about 27 cents per KWH that I exported, which is about correct for the middle and lowest time of use rates. I am just now starting to export a little at the higher rate.
Here is the full billing month usage graph
![SCE_Mar-Apr_usage.JPG SCE_Mar-Apr_usage.JPG](https://diysolarforum.com/data/attachments/210/210215-bb13a69d64a8063217272398a7d0abe4.jpg)
On the 14th, we had another power glitch that caused the XW-Pro to start a charge cycle from grid power. It didn't show up in the log, but when I re-booted the system, there it is. Over Voltage anti-islanding, right before the charge cycle begane. There was also another on the 10th, but since the battery was near full, it went into no-float very quickly.