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I didn't want to derail the diy thread but this comment got my attention. Now that we have this place on solar, I'd love to have a hot water preheat tank ... but our system is an instantaneous gas one and it is very handy in that we can dial up a temperature and not have to worry about the...

Hi, I've done a search to see if there's any one familiar with repairing circuit boards on Sunny Island inverters, with no luck so far. Are boards available as a spare part? I've been asked to fix an S18.OH-11 which has a heap of shorted mosfets ... F2907ZS ... and wondered if it's a...

Hi, I've spent ages online looking for a wifi power meter or energy meter. There are plenty of straight energy meters with volts, amps, watts, kwh etc ... but the only ones I have been able to find with wifi ... are switches and remote control devices. Obviously I'm missing something, so...

We live in South Australia ... on grid ... but want to put in an off-grid system ... retaining the grid for backup and for battery charging when necessary. I've collected 12.6Kw of used panels (6Kw of 250 watt panels and 6.6Kw of 275 watt). I've organised a 14Kw LF inverter and am...

Hi, I have been experimenting with evacuated tubes for heating air and am having some half reasonable results. I'd like to be able to put an actual power figure on each run to see what improvements I can make. Can anyone point me to a formula or method for working this out please ... and if it...

Hi guys, I'm new here, just came across the forum yesterday. I'm interested in solar pv and inverters etc ... but recently came across a heap of (cheap) evacauted solar tubes and was trying to work out if I could make use of them. I quickly discovered that they have no collector in them ...