Crossy

MPP are a reasonably well-known low-cost brand, not so sure about the Easun. 11.2kW vs 8kW and having two units means that if one fails you still have power. Of course having two units also affects the reliability so there's actually more chance of having a unit fail. If I could get 2 x 5kW MPP units there would be no argument ????

I still recommend that you get sufficient inverter power for your "ultimate" configuration even if you don't have all your panels and storage (the expensive bit) yet. At least then you know that your inverters will indeed run in parallel. There's no guarantee that a future version of the same unit will pair with your existing one.

With all these problems, there's an easy way and a hard way. The easy way is a small tank heater with a 1.5kW element plumbed into the existing cold supply and powered from a regular outlet. All modern tank heaters have the relevant safety devices built in so it's not a complex task. Once it's heated up you have enough hot water to do the washing up. Then it re-heats fairly slowly until you need more hot water. QED

You should keep the string voltage as high as possible without going over the limits. I think what you are suggesting is just fine and you have headroom for a few more panels.

The inverter will limit the input current so if you are a bit over panelled it won't kill anything. It's in input voltage that kills.

25A for a 6S2P arrangement. Don't forget DC surge arrestors on the panel input and AC arrestors on the mains input (put both close to the inverter).

10A is assuming all 12 panels in series (12S). Two sets of 6 series in parallel (6S2P) would be 20A ish. At which point you probably want to go the 4mm2 cable. All our panel strings (9S and 10S) are actually wired in 6mm2 (the biggest that fits in my MC-4 connectors) for minimum volt drop. How you arrange the panels depends upon the inverter MPPT parameters. It is imperative that the Voc (open circuit voltage) of your series panels does not exceed the maximum input voltage of the MPPT, ever!

Yeah, I leave it split as Watts and Hours simply to help people understand the units, it's already a terrible over-simplification anyway. ????

Now, about that 30 billion Baht owed to BTSC thus far ...

Let's continue over in the new thread.

Sounds about the right ballpark.

Yeah @Encid I'm seeing that price too ???? Must be a local offer.

You may have to show both to the check-in staff when you leave (to show you have right of entry to the UK and/or you've not overstayed in Thailand). Do NOT under any circumstances show both passports to immigration officers at either end. Dual citizenship causes their brains to explode!

"Here son, be the front man for this great business". "Ah, sorry, it's all gone horribly wrong, you're now the fall guy!"

Yup, hence the need for investigations. It should (yeah, I know) all be documented somewhere, however the evidence is likely already going through the shredder.

Dear BiB. Your next task is to locate the architect who specified the less than fireproof insulation and the contractor who installed it! It's no excuse but the owner could have been given poor advice in order to keep costs down.

For the MCB rating I'd go around 20% over your maximum expected current. You want it to trip if there's a major issue (short) but not trip under normal operation.

With the propensity of Thai rich-kids to flee, bail should be denied.

Meanwhile in the UK the police concentrated on taking out the terrorists.

One of many volt drop calculators. https://photovoltaic-software.com/solar-tools/voltage-drop-calculator-dc-ac

We have 10mm2 to connect the suppressors to ground, and 6mm2 on the other side, it's only short lengths so that's big enough.

Also, if you need lots of really hot water then don't forget gas water heaters. They really blast out the heat and they're not horribly expensive. Do beware of installation issues with exhaust gasses!!

We have a local tailor who works out of his front room, Madam gets material and he makes work shirts and slacks. Since my wife controls the colours I have a full set of the "correct" colour for each workday ???? My lady also gets shorts from a market stall somewhere brand "Super Jumbo" they're actually too big for me, socks and tightie-whities are stretchy so no real issue. My main problem is shoes, as a UK size 12 dress shoes are unobtainium, at least at prices I'm prepared to pay. I order site boots from the UK (company pays).

Yup ^^^. Do get the correct crimp tool for the MC-4 connectors, if you're doing more than a few you really can't just squidge them up with the pliers. We did invest in "solar" cables, purely because they are supposedly UV stable and more resistant to attack from the local wildlife. But the regular stuff works just fine.

Yeah, I've noted many times that it's best to get all your prospective inverters at once.