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Everything posted by Muhendis
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Thailand and EU Sign Partnership and Cooperation Agreement
Muhendis replied to snoop1130's topic in Thailand News
There is absolutely no link between this and the investigations into EU corruption.... -
Phuket Immigration announces results of their recent overstay crackdown
Muhendis replied to webfact's topic in Phuket News
That's an old one ???? -
At a guess I would suggest that input wires were connected to output wires and the short circuit current would have been enough to heat up a few poorly made internal connections between cells. Probably would not have happened if panels were t'other way up. Mind you if there was a poor internal connection it would have shown up sooner or later anyway. I wonder how the explanation went to the insurance company.
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my new UK passport collection
Muhendis replied to harry94's topic in Thai Visas, Residency, and Work Permits
500 Bht in Buriram too -
Thai police admission exam cheaters face criminal association charges
Muhendis replied to snoop1130's topic in Thailand News
Look for the "knowledgable" supplier of the answers to the exam questions. He is probably at the top. It's an internal job. -
Yes it is. I wonder what they'll be like after their 50th birthday
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Switch on Grid Export on Solar Inverter
Muhendis replied to eddysacc's topic in Alternative/Renewable Energy Forum
If the inverter has batteries then it will still be running without solar input. The grid is not connected in these circumstances so disconnecting the CT should not be noticed by the inverter. But that would depend on whether or not the CT is monitored for any reason. -
Switch on Grid Export on Solar Inverter
Muhendis replied to eddysacc's topic in Alternative/Renewable Energy Forum
So making physical changes requires a complete reboot. Sounds pretty normal to me otherwise how can the software know if something has been deliberately changed or if there is a malfunction for example? -
It is indeed the most secure way to protect your bank account, but you can still get conned in other ways (cheap rubbish instead of ordered item when package opened).
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Was the water tank grounded? I would guess probably not. If not then there would be no leakage to earth but the bore hole is most certainly grounded so any leakage would trip the RCBO. I don't suppose any of the installers checked to see if the water in the test tank was live As already said. The proper test is an insulation test with a megger.
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It is also worth mentioning that the 20% to 80% charge range is a reduction in the battery effective capacity so if you're going to reduce the charge/discharge levels you will need to increase the quantity of cells to maintain the overall capacity. For example: 100Ahr battery @ 20 - 80% = 60Ahr usable capacity 167Ahr battery @ 20 - 80% = 100.2Ahr usable capacity So if it is calculated that 100Ahr battery is required for an installation then the actual size to fit would be 167Ahr at 20 - 80%
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LiFePO4's are reasonably happy at 30ºC. They will loose capacity a bit quicker above 35ºC but, unlike lead acid temperature is not so much of a big deal for them. Fears of the fire/bomb risk: Lithium ion batteries will go into thermal runaway at, if I remember rightly, 356ºC whereas LiFePO4's are good for 460ºC until runaway starts. These are internal temperatures. A good BMS will ensure this can never be due to over charging or discharging too fast. Keeping them away from a heat source is also a good idea.
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Yup. And in addition to that LiFePO4's are quite content to be part charged on cloudy days whereas lead acid will suffer from sulfation which will accumulate over time and kill the battery sooner rather than later. Also best working temperature of lead acid is 25ºC whereas LiFePO4 is 30ºC which is normal for Thailand.
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50-year-old man crushed to death by excavator in Sattahip
Muhendis replied to webfact's topic in Pattaya News
So sad that any one should die like that. It takes the edge off seeing the correct name used for the machine. -
Yes that is true. I like to disappear down to the other end of my farm where I can enjoy the cool of my mini forest.
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Instructions? More fun to build it first then look at the instructions to see what to do with the three screws left over. ????
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Where can I look at colors for my interior walls?
Muhendis replied to OneMoreFarang's topic in DIY Forum
Ahh yes rigor mortise grey. Colour coordination can be a bit of a challenge but as some have already mentioned, you need to look at a complimentary colour scheme to either blend with your furnishings or perhaps to highlight different areas of the condo.