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Yes, very true. Also, i mentioned that this is for the design phase. When you get to the real world requirements, dead flat is almost never an option due to dust, leaves, snow etc. In NZ, for offgrid, 10 to 15 degrees is usually the best balance of self cleaning, and best solar collection...

Sad news for everyone on the forum (and members of the public who are not aware of the scam); In typical TradeMe style, it seem that our comedian trader on TradeMe has been shut down, but the scam sellers are still up. Another case of TradeMe shooting the messenger, blessing the scammers.

LDVV - if you are going Growatt, go with the DAH 460w panels x 12 (2 parallel strings of 6) - you get very close to the magic numbers (max Isc, max Voc, max wattage) with that combo of inverter/panels. They are a high-voltage panel (~60v) with low current, so by the time you put 2 strings in...

This might be of interest to Australian/NZ installers (but i would expect they already know as it has been discussed very often); AS/NZS 5033:2021 has been updated, removing the mandate for DC isolators to be installed on household solar systems if other safety measures are followed. These...

Hi Solar_Lex, A great big preemptive welcome to NZ! You said ... "guessing 1500w would really damage a 100ah agm house battery". A 1500w inverter drawing full surge load (3000w) will pull ~250A, so unless your AGM has that kind of CCA (if its actually a starter battery) or a BMS that can do...

Great write-up @ULR

@RLP : Not sure where you are in NZ, but give the guy at roar power a call - he has lent me time on his cell testing machine to check 8 cells on a 24v battery for me, and found a bad cell. He might also have spare cells that might be a match for your cells, as i know they have EVE cells in some...

@MyK3y - how are you getting on with this project? I have a couple of acquaintances trying similar projects

We would almost always use the load terminals in our setups - but our cases are specific; 1 or 2 panels, into a victron controller, 24v LiFePO4 battery, with the load terms powering a passive POE injector into waterproof (carrier grade) ethernet up a pole to power radios, cameras, APs, lights...