ExpatOilWorker

I agree. Profit + VAT makes it less attractive. The major components, Inverter, 3 x batteries + panels is 175,000 baht. I will check with a local electrician if it os a job for him. The 15 kWh are too heavy to transport. Even the 87 kg 10 kWh will be a challenge.

The quote arrived. 481,000 baht for 10 kW inverter + 18 panels and 30 kWh battery. The 65,000 baht in labor, 15,000 in permits and 31,000 baht of VAT do add up, but ballpark as expected. I am still waiting for a quote from CBC.

I have never seen this type of traffic light signals in Thailand 🇹🇭, can you share a picture of a location?

In fast moving traffic, it could be a recipe for disaster, but you would be surprised how often the white car, even when going straight, will stop and let the yellow car turn in Bangkok's stop-n'-go traffic.

I think is has something to do with traffic flow. Imagine an endless row of cars are following the white car. Without this rule, the yellow car would have no chance to make the turn. How is the faulty inverter? Back running trouble free again?

Like this. Yellow car has the rightaway.

Correct. It is even less intuitive when it is a T intersection and both cars are turning from the main road to the side road. The red car 🚘 still has the rightaway. That was also on the DLT test.

One (last) question 🤔. Is the inverter sensitive to a bit of ground leakage or will the system only trip if an external ELCB or RCBO breaker is installed? My outdoor lighting has a couple of cable joins that are just isolated with black electric tape. I have tried to fix it, but the LED lights still glow on rainy days, so I suspect the ground leakage is a bit more than the 40 mA required to trip an ELCB breaker. I measured 32 VAC from the connection to wet ground.

You are asking about the below, just for left hand driving. Most intersection here will have a dedicated green arrow for the right lane crossing turn. In your case, the left turning car will have the rightaway.

MG should improve their parking sensor system.

That is absolutely brilliant. I see you have different settings during the day, so during cloudy days, you will always start the night with 50% batteries. Just one question, shouldn't your grid charge settings be ON? What brand of inverter are you using?

Just normal variations.

😁 😂 😀 🤣 😁 😂

Turning right or the red car 🚘 has the rightaway. It is a question on the driver license test.

@Crossy, sorry to keep asking questions. You earlier indicated that the Deye inverter could work as a UPS, but I don't see such an option in the manual. There is an option for the inverter to shutdown at a certain SOC and by shutdown, I assume this is Chinese-manual for switching from battery to grid, right? The UPS scenario I am looking for is that the inverter will use battery down to say 30%, then switch to grid. If the grid then goes down, the inverter will go back to battery until a lower, say 10%, battery protecting SOC. Is there an option for that?

@Crossy, just out of curiosity, how does it actually work when the inverter priorities solar power to the "home load" over grid power? I assume the CT play a role here. Does it measure the current and then the inverter increase the voltage a fraction above grid voltage? Must be a fine balance in order just to match home usage and not push power into the grid.

Awesome! I prefer bingo now, rather than blue smoke later. Water heater and stove is all gas. The 1,800 W vacuum cleaner is my only odd "heavy" load. It is a cabin in the woods after all.

It is all starting to make sense now, thanks. If I understand correctly, the load was on the wrong output in the solar sparky's sketch. It should look like this with "zero export to grid" activated in the inverter settings, right?

The plan is never to export, as others have tried and it damaged control boards at the generator. Thai Solar System will quote a 10 kW Deye inverter. Are you saying the inverter can only support a small load when the grid is down? That is bad news, as we have frequent power outages and I was planning to run the whole house, around 3,000 W, from the batteries. Is that really not possible?

Take away the generator and home load, which is unique to your setup, and with the AVR in the B position isn't that exactly the same at the solar sparky's hand drawing? You both have the CT in the same position.

Nope, that is absolutely not the idea. Isn't the battery connected as per the red circle and the CT just preventing feed back on the export side of the inverter?

The sparky is now suggesting to have a CT (current transformer) installed on the export side of the inverter to avoid power feed back. That sounds like a sensible solution.

Just came back from Thai Solar System and should get a quotation in a few days. They outsource the installation to local teams around the country, so it was not possible to iron out the finer details with the actual installation team, but the AVR can stay on the grid side. @Crossy, does this look like professional work or are there some Somchai red flags? Ignore the lead-acid batteries, it must be one of their more low budget installations.

https://youtu.be/cmTeg0B9tH8?si=1YOvyOJoHMKiBJWW

It was a top 7 event.