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Will likely work as you've described. If you can add a tempering valve to the hot water outlet then you could safely "overheat" the tank water, and the mixing valve would bring it back down to 120F or whatever you set it to for use. Effectively makes your hot water tank bigger. If you decided...

I think your concerns are valid. When deciding whether to put panels on my 5:12 pitch roof (~23deg) or a ground mount, I paid attention to how long after a storm the snow remained up there. After a fairly big storm (~1m of snow) it took about 10 days to clear, and about 3 days after a 24cm snow...

Hi Badbyte. congrats on getting the unit. Just curious if they go into the UL1741 cert in any more detail. Like is it SA or SB, etc.

Pulse could come in via the ground wire. And even with a switch/CB off, a lightning spike could jump the gap in the device; that is less likely if you have various over voltage protection devices but in theory possible.

Just read an article that the US administration announce a 4 fold increase in import tariffs on various Chinese goods, including EVs, Solar and Batteries. Have not verified this report yet, but if true will likely raise the price of much of what we do here...

It would be nice, as well as opening up a wider potential customer base, if your batteries carried a general UL9450 certificate. There are a few other batteries which do, and as more and more localities are requiring UL9540, they are poised to picking up that market. EG4 could tap into that if...

Very much agree with Robin on this. 200A passthru to your main panel is not a good setup for real life long outages. Not only for the code requirements Robin mentions, but the hard reality of an extended grid outage brings in new problems which many who choose this route have not considered. If...

You might want to consider just using non-rechargeable Li batts. That is what I do in my weather station (also an Ambient Weather model with a small PV cell built in). Still on my first set of Li AA batteries going on 3 years. They probably won't last as long if you don't have PV helping out...

The answer is maybe, but probably not (sorry can't be more definitive). The issue is many/most on-demand/instantaneous water heaters are not designed to take pre-heated water as input. They expect cold water in and run their burners full all the time water is flowing thru them, assuming it is...

That $6200 price is about $1k more than the one other place which is taking pre-orders for it (TheSolarBiz). Still will be interesting to see what the official pricing is when Midnite finally releases it.

Have the same inverter. I did have that 35A breaker pop once; took me a while to find it. But in my case I think it was valid in that I had a bunch of freezers on it, which were all off for a while due to clouds and a grid power outage, and then they all came on at once. But in researching...

Yeah. I contacted the seller and got the same info. That is a really good price. Unfortunately for me, no UL certs.

Sounds good, unless that 200AH is for the pair of them together. In which case it is closer to the going rate...

Hard for anyone to answer your question without more details. The proper size of the concrete post will depend upon the wind and snow loads on the panels, and your soil type (e.g. how much force the soil can take). It is NOT just make a pier that goes down to below frost line the minimum size of...

We live in a culture which promotes buy the latest and greatest, whether you need it or not. I suppose it keeps consumption high, but really does not serve most consumers all that well (IMO)... My general rule is use something until it breaks or no longer will do what you want from it. Planning...

So just curious, do the pro's here have any recommendations for gloves for the DIYer who is working on a 500-600vdc string? Just curious if there are any cheap protective gear we should consider getting (not that we actually would use it ;) )

Unfortunately, I see over on CC's site, that the release date is now moved to May not April. Too bad, but not that far off...

I am not sure that for FilterGuy's examples above, where the voltage spike from the lightning is coming into the equipment over the ground wire, SPDs would help. MOVs are bi-directional devices, so if your SPD just has MOVs between your various lines and ground, the MOV is happy to "save" the...

As I am told: 9540 can be stand alone for a battery or can be for a battery-inverter pair. Depends on whether the batt (or really the BMS) can meet the 9540 requirements on its own or needs an inverter to control some "stuff". 9540A is a simpler test for thermal runaway.

To me it is unclear why you'd want a manual xfer switch between the inverters' outputs (and maybe inputs too) and the grid. Most inverters have a built in transfer switch functionality and additionally can supplement your PV output with grid input when necessary (but the details on this will...

Wrote to RuiXu to ask about the timing on the certs. They responded: (for those that might be waiting) So sounds like they are not planning on getting a stand alone 9540 cert, but rather one tied to their inverter.

Interesting. Their spec sheet does not mention any UL certs. Wonder if they are going to get any of those....

So I've looked at the iotawatt website and their installation manual. It seems able to set any CT as bidirectional right now (which is nice). But it does not seem to handle 240 loads (or inputs like an inverter) all that well. From my reading of the manual, they want you to put a CT on one of...

Spoke with Emporia support, and wanted to relay what they told me (all of this in regards to the Vue 3): They are still working on making the 50A CTs bidirectional. They think it is close, like maybe a month or two (but no guarantees). It will be a FW update that they send out, so should work...

I am considering an Emporia Vue 3 and have few questions about it for the folks who have one (seems the Emporia website does not have a contact for questions): 1. Did the 3 version add the ability to track reverse power on the 50A CTs (eg measure power sent back to grid)? 2. Does the 3 version...

In theory, except for two rods a ways apart when a thunderstorm cloud passes overhead. The charge on the bottom of the could will induce a corresponding charge and V potential on the ground underneath. There can be significant voltage differences between ground rods when this happens, with...

I should say, best protection if lightning does get to the mount, regardless of other protection... (on edit) probably more accurate to say it is inverter, CC, etc protection in that if the PV or mount get a direct lightning strike this isn't likely to save them...

There are indeed two distinct issues here, although both are talked about under the label of "grounding": What is correct and proper from an NEC AC and DC electrical code and safety perspective. And what makes sense in protecting your wiring and electronics from lightning and electrical storm...

Another consideration: looks like your SRNE AIO can pass AC thru to the connected loads too. Up to 63A if I am reading the label you posted correctly. So unless you have disabled that, or limited the amount of AC pass thru to the loads when there is no solar and the battery does not have enough...

May also depend if you need UL9540 on the battery-inverter combo. Last I looked the PowerPro is UL9540 but only with the 18Kpv.

Interesting. In have a Midnite Classic 150 in service for ~4 years now and it has been perfect. No issues, does what it is supposed to do. As you said, you're expecting some posts like this in reply. But I am surprised that if there were several 250's failing in a short time, Midnite wasn't more...

One option for reducing your system loads would be to switch to a dedicated DC water pump for the well with separate PV panels. May not be an option depending on how deep your well is and other details, but in general a DC well pump will have much lower starting requirements than a traditional...

Folks responding with their pump situation might want to say how deep their pump is. The load is much greater starting with a few 100 feet of water column than without...

So, when a remote sub-panel (or PV mount) has a connected ground rod, there will be current flowing thru that ground wire and the connections whenever there is a voltage potential between the two ground rod locations. During a nearby lightning strike but also when thunderheads pass overhead. I...

Fair enough. My misunderstanding of AC grounding code. Thanks...