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from Space Weather Station, University of Michigan and from about 30mi NE of Redding CA ( ~42degrees North) Not sure when the show ends - and best of luck to yous guys and gals with solar and UPS beeping about the fluctuations.

Thanks for the heads-up!

This is as it should be. Power through the wires is a combination of Voltage and Current. ( P = V * I - Power is equal to Voltage * Current, with Power in Watts, Voltage measured in Volts and Current measured in Amps) Your household is likely wired for 220V Split Phase. In this model, there...

Best model would be to set all batteries into a common bank (all 48v batteries wired in parallel). The bank is then connected to both of the 6000XP AIO units. This allows both of the AIO units to charge the bank, and to draw from the bank. To start with, each of the 6000XP should be connected...

Typo, meant to ask about the specific ver or version number. Apologies ...

You updated the firmware in the 2 original batteries, but have you updated the 2 new ones? What's the vet number for those, all the same?

Silly question: How do folks move around a monster battery that weighs something like > 625lbs (~275kg)?

speedtest.net (works best if you're using an adblocker such as uBlock Origin)

Guys, I came here to play solar nerd and plan/build an off-grid system but ... I learn so much for you clever kids. THANK YOU!

Welcome Rusty!

There is a certain truth to the supply/demand argument being offered by some financial/economic pundits regarding prices for solar panels -substantial over-supply is causing a price war. However - I'm of the opinion that some bigger players (essentially those within China) are engaged in...

Many choices in the market at the moment, leading to overwhelming info and confusion for those new to the field. Currently you can find pretty good prices from Current Connected or SignatureSolar. For example, I paid ~$1800 for 12 of the Hyundai 395w bifacial (includes tax & shipping). I'd...

With support only at the ends, the mechanical stresses across the panel's frame may exceed the strength of the frame, leading to cracked glass/substrate. Also, kinda depends on the width of the panels; low risk for a 20-30 in wide panel, but higher for 44-48 in panel (going w landscape mode)...

Certainly not against higher performance panels, and lower cost is always welcome. Last batch from Signature were $0.30 / watt, so I've got no complaints.

Welcome back, Paul! Just need a few more batteries, and panels, and then ... LOL

Thanks for those corrections, Mr Sandals! I'm still at the junior intern level ... 😁

If I get this wrong, one our regular solar nerds will be along to give me kick the arse ... Think I saw where NOAA or other weather tracker reported coldest temp for Portland in recent years was 14dF (-10C, on December 08, 2013). Ratings for solar panels reflect the "Standard Test...

For VOC and the SCC max voltage, the spec sheet says "145VDC" ... so maybe you can have 3 panels ins series without exceeding max input to the Growatt. What's the VOC - and the VOC temp coefficient for your panels?

This is generally true - however it assumes that your SCC will not be clipping the excess power during peak day time generation. Assuming best case day time peak generation - Can your Sol-Ark 15k capture all 19,000 40,000 kw? [edited to fic bad math] If not, then your concept of "charge my...

Lots of variable in this problem - and don't forget that a decent 1500-2500 storage tank may seriously offset the high flow rate issue. Even a low volume 1 gal a minute pump running 24 hrs per day is ~1500 gal. Then a small household pressure pump, and you may not really need the high flow...

Great looking system - and thank you for the pics, diagrams and details! Q1: Did you run all of the PV wires in the same conduit? Q2: Is there a limit to how many current carrying wires you can stuff into conduit (per code)?

I like the concept and the reviews are generally really quite good. I'm anxious about the reliability - they've shoved a whole lot of technology into a small form factor, and I imagine they have several little computers and but-loads of sensors that all need to work correctly for the product to...

Steve's advice is spot on, IMHO. I think we are in a market glut at the moment due to large production runs from international manufacturers, especially those in China, and south Asia sources. That effective *over-supply* has put a lot of downward pressure on prices across most of the globe and...

... and just so you know - see the resources tab here on the diysolarforum. Lots of really good materials there and its free, thanks to Will and a bunch of solar nerds, LOL

Would the shed be capable of supporting the solar panels and housing the batteries, solar charge controller and inverter? Any worries about leaving the panels and electronics in the shed when you leave? That would allow you to run a 120v AC circuit in a buried conduit from the shed to the...

For battery banks, lead acid last about 3-5 (maybe 7+ with luck) years with good maintenance, AGM about the same but require less maintenance, LiFePo about 10-20 years if not abused (cited as 6,000 to 8,000 cycles, with one cycle roughly meaning a day of charge / discharge). Note: Lead-acid...

Well, if the requirements are "cost to entirely run a home normally off the grid minus the heating." The engineering approach would be to better define terms as well as the requirements. Q1: What is the estimated total daily electrical loads? This varies by square footage, insulation and...

Good work on setting that rack up. I'm still working through the plans for 2 or 4 to be installed on a south facing slope. Will likely use a center steel pipe (2-3 in sched 40) with welded on 1/4 in steel top plate, set in concrete. Can I ask what panels you used? Many of the larger panels...

Have they demonstrated the ROI and specific use cases where these are justified? 1) Panels are significantly cheaper at this moment than ever before (as if there were a glut of these) 2) In Western US there's generally sufficient real estate for sh!t tons of panels

Is there a standard protocol for connecting a 6awg bare copper ground wire to an aluminum PV panel or aluminum supporting frame? Any corrosion or galvanic action to worry about, preference for special stainless steel fasteners?

Yes, the basic mathematics approach. The engineering nerd in me salutes you!!!

Ordered my first set of 6x 550w (non bi-facial) from Amazon and those arrived without incident, crated and shipper off loaded the stack on the curb. There were a few minor holes in the cardboard boxes, but no cracks, no smashed corners. So that's a win. Second set of 6x 550w I ordered directly...

As an FYI, I also have the pair of 6500ex AIOs and the PDP, but mine is still in uh ... testing mode. ?

1. On the front panel Settings menu I think its item #11 where you can select the charging rate, what is that rate set to? 2. On item #16' charger source priority, if set to OSO then it will only charge from Solar (Only Solar for charging) For item #16, I have mine set to SNU, solar and...

Ditto - in fact as a temporary measure, I was feeding my first EG4 6500EX-48 with the Predator 2000W as the input. I had dialed down the charge current to 30A. Set the little Predator to NOT USE ECONO mode (sw in OFF) and it was fine. You could tell it was under load and burned fuel faster than...