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This is a trace from this weekend's test. From 10:00 to 1:30 the graph shows string 3 running and string 2 cycling on and off to supply the load from my dryer and other heavy loads. Even with this 5000 watt load running, it can keep the battery between 94 and 100% SOC. The dryer is not a steady...

Well I did more testing today. Based on prior testing I adjusted the load shedding so that string 1 sheds at 92% SOC and reattaches at 90%. String 2 sheds at 97% and reattaches at 94%. String 3 is now always connected. The AC Coupled Frequency Shifting can manage the 3 KW output of string 3...

I know it is standard industry practice to use 12-2 nonmetallic cable (better known as romex) for 240 only circuits. So you get a white and a black. Using the "correct" color isn't really an option. Running 12-3 just to have the right color is not required by code. The code may require using...

I'm not sure it's code, but I consider it a good safety practice.

I was having issues with the battery voltage going to high and causing the micros to turn off. I probably should have 6 batteries rather than 3 with close to 10 KW of PV. Thats 190 charging amps. The system can handle this at 90% SOC. At 97% SOC the high voltage shuts theinverters off...

No, but you do need something to: Disconnect your microgrid from the grid. Act as the grid forming inverter. Capture the excess power coming from the micro inverters and send it to the batteries. Perform frequency shifting to lower the output of the micros to prevent over charging. A hybrid...

This is nit picky and you will find many panels where this is not done, but when using a 12-2 Romex cable for a 240 volt only circuit (no neutral needed), you really should "Redesignate" the white wires using red electrical tape. This makes clear in the panel (and even more important on the...

Mostly this is true so long as you do not have a current measuring device on the wires like a CT. In that case mixing up the polarity will cause the device to measure incorrectly. For example on the Enphase combiner box getting the polarity of the wires correct is very important. Multiple...

On the Schneider ALL the neutral lugs are internally tied together. Generally you would have a "First means of disconnect" upstream of the Schneider. In this case where you are feeding a panel from the Schneider the ground neutral bond should really be upstream from the Schneider not in the...

I need to know if there is a 200% / Hz profile that is IQ8 compatible. I found an "Off Grid" profile that is supposed to AC Couple with Schneider, but it says it is compatible with the IQ7 family only.

My Settings: Nothing Special here. AC Coupling On Recharge SOC 95 - Doesn't seem to make any difference Battery Type - Custom Charge Cycle - 2 SOC Control - Enabled works better with SOC Battery Bank Capacity - 300 Ah Maximum Charge Rate - 60% If the actual charge rate when AC coupling...

Thanks, I checked and I do have the latest firmware.

I think there are at least three reasons. It is higher voltage (up to 600 volts). DC tends to sustain arcs better than AC. A short in a PV circuit is less likely to trip a circuit breaker or blow a fuse. So if these wires arc and burn up, the metal conduit is more likely to contain the fire...

I sure seem to remember that the IQ8 inverters were ramping up slowly before the recent firmware upgrade. Possibly, the ramp up had been over ridden in the firmware. A part of the firmware "fix", may have been to remove the override and respect the ramp rate (or lack of one) in the grid profile.

I will do that. I will also go through any information I have on how some settings seem to affect the operation of AC coupling.

So first to be clear here, my IQ8+ inverters work perfectly while grid tied. I have had issues with getting them to work when AC Coupled behind my Schneider WX Pro Inverters when they have lost the grid and are in grid forming mode. Enphase fixed the worst of these problems with a firmware...

It looks like this is instantaneous. If you use the power you produce on your side of the meter you don't pay for it. Once you export the power outside the meter, they pay you 3 cents. It cost 15 cents to buy it back.

So what do you want it to do? Right now you don't have any of the grid interactive features turned on? It sounds like you want peak shaving? Are you using SOC or voltage control? Actually I saw you are using voltage control.

Your battery charge must be higher than the "Sell to volts". It also must be higher then recharge voltage plus 0.5. You must be in a sell block. A print screen of your "Grid Energy Management" and "controls" might help. Also the current SOC Control, time, battery voltage, and recharge...

Some new Information I did some testing today and was able to sort out several issues. About a week ago I changed my settings to use the SOC control. At one point I was having problems with SOC not being reliable. This could have been due to a bad connector cable. My SOC does not seem to have...

I made major progress on my AC Coupled issues today. Just looking at the Frequency in the Insight Screen seemed to be good enough.

I think being able to have a fairly detailed view of 10-15 minutes would probably work for me.

I built a PV Shedding Controller. Right now it uses 25 amp 2 pole contactors to switch strings of PV on and off in order to maintain the SOC at an acceptable level when I am detached from the grid. It seems to be working great. I just had to turn the AC Coupled Mode off on the Schneider...

I'm not sure what the definition of "Long Time" is but I might consider a bench scope since there is so much more you do with one compare to just a frequency logger. Presumably they would make the "logged" values available over a serial connection. I DO know computers and AC electricity a lot...

I have to admit that I'm rather surprised that there isn't a frequency logger available somewhere for a reasonable price. I did find one device, but it only logged voltage.

I guess I didn't see it. I think those brass ones are more for keeping a sprinkler system from backing up into the house when you lose water pressure.

I thought about that. It's sure much easier to read a data file and graph it than it is to look through hours of video trying to find what you want. I'm going to add this gage to the cover of the control box. More cool lights to look at. It took me an about hour to decide on the color...

Sounds good. I wasn't sure exactly what he was trying to do. Maybe I at least go the conversation pushed in the right direct even if I didn't pick the correct check value. It's just one I used on my sump pump. They actually have a little tiny metal spring on them to insure positive closure.

I didn't look inside them too much. They power themselves off the AC line they are monitoring. So there are only two input terminals on the frequency version. I have the "Current" version of the devices already. You hook it up to the AC, but then it also has a little CT that needs to have...

I also have this little guy coming in a few weeks. I couldn't see paying big bucks to get an $8.00 part faster. https://www.amazon.com/dp/B08TRMG9PP?ref=ppx_yo2ov_dt_b_product_details&th=1 I think the Chinese Photographer didn't know the Hz was supposed to be right side up, not zH. If I...

I changed over to SOC control. My latest recharge cycle looks fine. It was cloudy here today, so I couldn't do much else.

They literally ALL shut down as soon as the second string turns on. It is near instantaneous.

They make check values. Generally, sump pumps use a check value to make sure the water won't drain back into the sump. Just get a decent one with a solid check value design. The cheap ones have little rubber flaps that won't be adequate...

I found this. It doesn't log, but it's a start. https://www.amazon.com/gp/product/B08TRMG9PP/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1

Yes, and removing it is even more labor intensive and costly