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I follow Ben Davidson's Suspicious 0bservers (with a zero not an 'O'). I am working on an 1800w array that is a series of panels of two types, adding up to a working voltage of around 180v, and around 10amps {although, I have seen it produce 2200 watts at one time!}. It feeds a Growatt SPF...

There's a guy, who has an offgrid roof on a hill. Not a building: no walls. Just the roof, pad and supports. Built intentionally so that there is a southern facing side + an less-sloped extension off of that. Roofer didn't order enough materials, and so the western end of the roof tin simply is...

See https://www.ebay.com/itm/314574627135 or image for example (screenshot). Looking for just the panel for a reasonable price. 1) Obviously these are not 300w. Plain false advertising. Maybe 75 watt. 2) The vendors don't seem to know what they have. The additional 20amp charge controller is...

This is a vehicle-mounted system. This is strictly a question about the battery-alternator interface. TLDR: Question: Has the issue, of a high-drain (dead short) by the LFPo 12v 100ah batteries, been resolved? I.E. so the BMS restricts the charging rate to something reasonable like 20-40 amps...

Ian at watts247 had me tie a jumper wire between neutral and ground, at the bus bars in the vehicle main AC panel, which is fed by the growatt, because there was no neutral-ground bond in the system at the time. Vehicle has a 3kw gasoline inverter generator, that has no neutral-ground bond...

Have an existing string w a 181.2 Vmp and 219.3 Voc. Want to add 2 strings of 6 panels each, in parallel, with a Vmp of 182.4, Voc 229.2. Running 1700 watts rn. Capacity of new strings is 1440watts/string. GroWatt SPF 3000TL LVM ES purchased/shipped from dealer Ian/Watts247 on April 2021. Has...

Hi! Found some at SanTan, but shipping is killer. Need 6 or 12. Central WV area.

Placeholder: Because I already had the browser crash once on the forum, this is a placeholder I will update in a minute from a laptop. Here are the two related posts: https://diysolarforum.com/threads/growatt-firmware-update.36076/post-500680 and...