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Fair call.

Mixing a random assortment of panels has it's trade offs too. I know of one MPPT with USB, but it does seem a common tell. A used 175W panel is a ~$20 purchase - not a big deal. In what way is a 175W panel "not consistent" with three other 175W panels?:unsure: I think you are arguing against...

How did you go with the new cable? There are some quirks if you are still having problems. A good start is the OEM serial driver in place of the MS driver https://diysolarforum.com/threads/epsolar-an-series-to-rs485-to-ethernet.26028/post-360721 for your settings, follow this and make sure...

It's (open barrel) a different name for exactly the same thing (yes I had to look it up)

6th attempt to contact epever finally got a reply. Their suggestion to deal with the 'voltage setting' is the use the front panel and select the User Settings option and set it up that way. There were no suggestions how to do any kind of reset, and the only the only observation about the lack...

Most of my systems get the greatest benefit from long hours of charging rather than high peak current - so more panel (above SCC rated current) gives the best performance. As I'm running epsolar SCC's, this is a quote from the manual: The caveat about OC-V doesn't make sense to...

Mak'in progress The V-COM driver I'm using allows multiple devices running on separate RS485-Ethernet bridges to all be mapped to one COM Port. I wasn't expecting this part to work so smoothly, so was a bit stunned when everything (3x regs, 2nd wifi AP) "just worked". Also, it didn't break the...

That's what I tried to do (but my windows calc added 8 instead of 8%). Without knowing anything about the SCC, I agree that's too close unless you are confident you'll never see the cold temps and decent sun at the same time. For interest, my 250W panels do not reach claimed VOC. The ISC is as...

Try buying better connectors. If you need to pull every connector apart to get it on the cable, you are doing something wrong.

+1 For one thing, you'd need a controller that understands this chemistry. They both need to be charged using a delta-V detection or they will cook.

Quite! I like the arrangements above, but I'd aim for 80V as it gives better performance in low light. Higher voltage also let you run much cheaper cable to regulator. "Quality fuses" are rated to operate up to their rated capacity. Yes a margin is good, but a fuse operating below it's rated...

No. Panels in SERIES - the voltage ADDS, but the current remains the same. (the power ADDs) Panels in PARALLEL- the current ADDS, but the voltage remains the same. (the power ADDs) Nothing multiplies (ever). The 75-15 will provide a max 15A charge current

Excellent! Good result. I've been wondering about the settings in my regs too. They seem a bit ... hot.

Good for you! Always buying quality gear!! "Positive Switching" is easier/cheaper to design and build, but it has it's down sides.

What will you use instead? I bought a batch of 20 MC4 pairs only to discover the inserts wouldn't seat in the shells The next batch were fine, but I wasn't happy about it (naturally I was on the roof when I found I had a problem)

That's a good price - wish I could get them for that price.

Hi @DIYSteve , how did you go with this? I've just got my first SCC talking across my network and will have four more online soon. Being able to display them all on a single page will be very helpful to spot problems / anomalies.

Epever offer a wifi adapter that may be worth considering depending how hard it will be to run a cable. I explicitly wanted to run cable, so I went down that path. Also, I wasn't sure if the OEM device might be 'too smart' and prevent me talking to multiple SCC's. And they only talk about...

I believe that is the key to the design - the less parts the installer has to juggle while trying not to fall off a roof, the better the chance the connector is assembled complete and correctly (it also removes the temptation to use a shell after loosing the gland).

To me, it looks like the cable was a loose fit in the connector and the die you have used is to small for the connector? Was the cable a tight fit / did it completely fill the socket?

Slightly different problem now - I upgraded one SCC giving me a spare to play with. That one was in turn substituted in place of my last remaining PWM reg - then I discovered a problem. The 1210AN had been maintaining a 24V battery in its original position. When it got moved, it had a 12V...

If you've got 2 (or more) panels connected with a Y and you have no output, either: both groups of panels have failed the failure is below the Y I agree with the suggestions above that Volts, but no current is highly suggestive of a blown fuse.

Understood, but when Florida has low temps, is there is much sun? 1.3V is an uncomfortably slim margin, I'll grant you, but will it ever happen?

Just wondering what your intention is with the two 125A breakers? 3kW @ 24V = 125A So, you should be able to pull full load from the inverter with one battery disconnected - but do you want to? With your board out of sight (in a box) and the system apparently working perfectly, you could have...

Ok, thanks for the update. A single eLog won't suit my purpose as the SCC's are in different locations (although three are co-located) A Pi/ Arduino/LaunchPad that can poll the SCC's across the network looks like a viable solution. The eLog01 can only store 20,000 reading which will disappear...

Yes, that is one of the benefits of an MPPT controller. For small systems, series connections are better as it will give you lower losses and more hours of charging per day.

Ebay seller not being completely honest - surely you jest :ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO: 10A is a lot of power for a pump to draw if it's less than full load @OzSolar , do you have an opinion as the lifespan of the helical/screw pumps? For myself, the cheap pump was planned for a low...

I put in a bore a couple of years ago with a chinese bore pump (nominally 72V, 750W, 5m3/h) It worked well for two years and then the controller failed. The pump is 3ph which is generated from the (DC only) controller which has a few user configurable parameters, but is mostly locked down. The...

Excellent. Good to hear.

Your argument is valid if you only heat the sand to 100C (same as water). The disadvantage of sand is as you describe, but ... The advantage of sand is you can heat it way hotter than you can get water (ignoring pressure vessels). "way hotter" (a technical term) not only gives you the same heat...

How do you do comms with the Victron regs? I've got all my epever's networked (one of the reasons for choosing them)

Efficiency comes in many flavours. Currently I'm buying 270W ex-house panels for $10 each (a few years old, but still above rated spec.). At that price, I can easily add a few extra panels to an array to compensate for poor performance in another area. If roof space is part of your efficiency...

There are lots! The trick will be to pick the one that best suits your purpose. For me, I'll stick to ethernet because it is agnostic what is talking to it.

Ah - yes indeed. Forgot about that as I haven't used it in months Check the other setting while you are there, but checking RS-485 should make it work.

It's not the accounting that is of interest - it's the potential for transients to exceed the limits of the SCC when a battery is disconnected. Effectively, a large enough capacitor will look to the SCC like a battery is still connected. The nature of a capacitor is that it will resist a change...