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Hi! This looked like a lot of fun, I'm currently powering a microwave, a desktop computer, and some lights. The auto-transfer switch means I can keep the batteries between 90% and 40-ish% charged, then swap over to city power, hopefully extending my battery life. The romex runs to my kitchen...

Good question - I think several the 12 mosfets burned, at least one per each of the 3 transformers - the insulation is melted off the third pin (source pin):

MOSFETS are tricky to buy, gosh -- I think I found a good replacement mosfet that I can purchase, does this look okay? The only issue is it has a slightly worse resistance rating (6.8 milliohms vs 4.5 milliohms) but the original handles less current, so if I did the math the new one may still...

Totally! Sounds like a fun project, I'll give it a go. Thanks for giving the pics a look!

actually, seems like the mosfets are most likely the culprit. Something like this may work: I'll have a go

So, the inverter has 6 x 50 amp fuses, and it even came with a full set of spares; unfortunately none of the fuses blew. One of the big capacitors is bulged, and the circuit board nearby is scorched. Maybe I can solder on a new cap, but not as simple as just a fuse sadly!

I was hoping it was just a fuse, but it definitely smelled like magic smoke. I'll open it up and see, that would be sweet if it was just a fuse but I'm not overly optimistic ?.

Nice! Cool beans. Yup, Will used 4AWG in his tutorial but the hardware store had a 10-foot remnant of 2AWG at a discount so why not be a bit safer.

Nice totally, makes sense about the microwave, thanks! I've got a 150A fuse atm, and I over-gauged my wires with 2 awg (that was a pain in the butt to work with lol).

No video sorry, if they invent smell-microphones I could record some, my basement still smells smoky lol :D I'm using fuses like this that Will recommends, not sure if that counts as fast-blow? I was running 2100 watts through a 2000W inverter, so I don't think a fuse would have saved me - a...

- actually, looks like the 2200W Giadel has pretty good overload protection that other users trust - like running a microwave + a toaster, it will trip and just make a sound, then come back on after a few seconds. So I'll probably do that, behind a 100 amp fuse to be safer.

RIP my first inverter, sorry buddy! My fault, ran a 900w microwave and a 1200w induction cooker at the same time; I was assuming the inverter's overcurrent protect would trip, but I burned it out :( bummer! The 24v inverter was behind a 150A fuse which wouldn't blow until 3600 watts, so next...

Totally - this https://diysolarforum.com/threads/inverter-trouble-randomly-cuts-out-for-a-split-second.35471/ is the closest I've found, still digging :) I'll grab my multimeter and check for a voltage drop / re-tighten, check connections -- if that doesn't help I'll look at a better inverter...

Hmm -- the lights turn off completely on the inverter screen when it happens, no beeps, no error codes, it just turns back on as before. A lamp connected to the inverter turns off, then back on, when it happens. Not sure if it's a spike or a sag, I could connect my volt meter and try to catch...

Hi! Maybe silly question; my first foray into solar. When my battery (2 chins 12v in series for 24v) fills up in full sun and the charge controller switches to float, the inverter shuts off for just a moment, no more than 2 seconds, then comes back up. I'm planning to just get a UPS for my...