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@IslandBill For a 10A sump pump backup (UPS) I did a Sungold Power LFP6048, split phase low frequency 48v 6kw hooked up to ED4LL48 server type 5kwh battery. From the subpanel that feeds the sump pump (automatically) I added a switch that can backfeed my main panel as back up power. The only...

Great input to chew on from above. Some added points from my new and similar experience: 1. Was told generator should be 1.5 X inverter size, so battery and loads can be managed. I ended up about 1.2, but not worried and I can easily adjust my charger if needed for my passive home backup...

Actually did a similar system, now up and running for couple of months - almost debugged. Manual whole house backup: Inverter = Sungold LF 6KW 48V Split Phase (120v/240v) (also charges battery) Battery = EG4-LL 48V 5.12 KWh Mechanical Interlock at Primary panel with backup power breaker...

@fmeili1 Did you ever sort out your "power-on" sequence? I too have same question as I'm starting up new EG4-LL (V2) for first time, and also noticed new EG4-LL instructions don't mention like prior model. So I phoned Signature Solar tech support and was told that EG4-LL does have built-in...

@NEpowerandlight : The NG conversion is exactly what I did, purchased 2 Inverter Generators as I wanted 240V and low THD. The trick is that I'm able to connect them parallel. I'm OK with them being manual as they're for power backup, which will only be when I'm at home. I wanted 240v so I...

Hello @martinman. I'm also in Michigan, and like some, interested more in power backup than daily solar. I'm surprised you didn't have Sump Pump in your listed backup items. Below is my DIY approach which I think you may have a hard time finding for cheaper. I'm about 1/2 way through a DIY...

@SkipperJer Have you settled on a backup plan yet? I'm in process of doing something similar, wanting backup power for my worst case: basement sump pump losing power when basement if fully finished. Basically I went with budget friendlier inverter ($1100) unit which will act as a UPS for...

In my case I have a 1/2 hp sump pump that draws about 800w average, or 7A. Startup/peak I'm sure is a bit more. Hard thing is predicting worst of worst, which would be power outage combined with heavy rain. In Michigan we should be prepared for both, hence my endeavor. In a heavy heavy rain...

I spoke with Signature Solar today and they confirmed there's no problem to hook up EG4 LiFePO4 to Sungold (for charging), since I'm not doing solar. Discussed Schneider which was probably more reliable/proven, but the $$$ started adding up... for a simple pump "backup". With that I've made...

Hello team DIY! I need a backup power solution primarily for sump pump and secondly for home backup power. I plan for sump pump backup to be automatic, and home backup to be manual, hence split phase. My original favorite was Magnasine MS4448-PAE, but just too expensive I think for this case...

I'm quite curious where @Skip ended up with his project? I have very similar case that I'd like basic offgrid type inverter as backup power for sump pump. - What to just hook it up primarily to AC, but if AC goes off Auto Transfer switch kicks in the DC. - With one more thing - to be able to...

5KW at 24v means a lot of DC amps I think. Others can comment better than me probably on exact calculation, but I think you're on your way to 250A DC to feed the inverter (full rate).

Hello @Festus... I'm shocked (no pun) no one has yet to reply to your post, and look forward to seeing the experts weigh in! Disclaimer - I'm no expert, and have yet to install anything but can say I've spent couple years researching. Here are a few comments I can offer: > Low frequency...

Seems many had Signature Solar discount success earlier this year <50OFFCART> Any guess it will still work in June? Getting ready for 1st time SS purchase Eg4 & an inverter - over $3k, so 5% sound much better! Or maybe check out 2 items separately if it's $50 off only?

@Holdenmorris Thank you MUCH for sharing your unfortunate experience. Seems every good deal comes with risks. I feel lucky to have this forum! If you used your credit card and went through alibaba I wonder if there's a recourse there if they're not honoring the warranty?

@Tecnodave Thank you for your reply - I'm guessing this is something many of us have in common (no joke lol). Just curious, what type of application you have the MagnaSine in?

Curious: Does anyone know how to measure for THD, without a O-Scope? I read on a generator review where someone reported their actuals THD's under various conditions. Or is this a non-issue according to @50ShadesOfDirt experience? Is that for power case in US? As an insurance buffer, I've...

Here's side by side showing with & without NG kit. > Add ons: NG kit, Wheel & Handle kit, Oil Drain line, Engine Hour gage. > Fixes: Parallel box rewired from NEMA 10-50 to NEMA 14-50, plus added load meter Extra Measure: Use set of Load Meters to monitor basic generator functions (V...

If I understand this question and topic correctly, it has to do with having enough generator power to handle both Home Load + Charge Load. For example, if your Home Load was 30A & your Charge Load was 10A, then make sure your generator can handle both (40A) combined (+ a safety margin?)...

Cats Meow for me was an open frame inverter with 240v and parallel. The 240 allows me to feed both legs of my panel while the parallel allows me to double down if it's a long outage. I like they are quiet (compared to whole house generacs), portable/flexible, easy to work on and I can take...

Here's a reading from Sense - not BIG peak is running the DOUBLE oven!

@MJH- I've been working on this idea for almost a year. My case is "very" close to yours, as follows 1. Parallel Inverter Generators, converted to Natural Gas (actually tri-fuel now) (derated ~ 3000W/6000W [sing/dual], running) 2. Powerwall (battery bank) for: Active Sump Pump Backup...

@12kw_2021 Here are some resources if you haven't discovered already: Not sure if the Overkill stuff is dated, but I think the theory still applies. GOOD LUCK! https://diysolarforum.com/resources/beginners-summary-of-bms-functions-types-and-features.114/...

Well if at first you don't succeed, go to DIY Solar Power Forum for input you want to hear, and maybe even input you don't want to hear. After plenty of research (and input) I came to conclusion the parallel kit sold with my generator was junk with old NEMA 10-50, so I replaced with NEMA 14-50...

As I mentioned last June, I took hard look at purchasing the Greensun Powerwall and was provided attached literature - - if it helps and you happen to "not have".

Sounds very disappointing. Do you have more description on your setup - i.e. solar / inverter ( type). Assuming you purchased via Alibaba, I'd see if there's any recourse that route. Vendor doesn't want to see negative ratings. I had an experience where I made my case and was fully...

I like that - what was suggested a long time ago, but I was too cheap to save the terrible $40 piece junk. I know that the L14-30 works (in parallel mode), which includes a neutral. I know the banana lead on generator control panel has continuity to generator neutral. As you say, it seems...

Understood, and a concern I tried to address by installing meters - below from a couple weeks back was at the 2 generator HOT legs entering MAIN. Does this cancel your concern (I HOPE) for varying voltage? I think part of your comment is at heart of my issue (concern) - "how to apply Neutral...

Appreciate concern! I hope this (not for house backup) doesn't apply for me. In my case I actually don't want bonding at gensets, but at MAIN panel. As I understand, gensets that have bonding at gensets are sold towards portable use, or for case of a large unit that OSHA wants grounded, AKA...

Exactly what I've been wondering. Does it mean anything, however, if there's 120v L1/L2 to Ground on the NEMA 10-50R when both genset are on? Is that what would happen if one of these old plugs was in our house?

NEMA 10-50R box opened (or is Pandora's box)

Just realized I need to patch the ground through too, sine I don't plan to physically connect cords 1 & 2, but isolate this neutral test. Thank you again !

Thank you for ideas. Seems basic case of dammed if I do or don't.... Good news is the parallel kit was only $40. With generators taking 5 months to fill order (Feb - June) I'm not sure what wait is - especially with import line currently sitting in Pacific.... Seems we're aligned that it's...

I'm told by supplier product is modified sine wave. Therefore, I assume I have High Frequency Modified Sine Wave in my case. How that translates to AC I'm not quite sure, but wonder if it works like traditional AC we have in US, using neutral in transformer to pull out the 120v? I am able to...