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    Growatt 3000 24v and another charging source

    in my DIY 24v system I have a Growatt 3000 24v that I am not utilizing the SCC on. I have my 2kw roof array charging the battery bank with a Midnite classic 200. I'd like to add a 1kw array optimized for winter and take advantage of the SCC on the Growatt i'm not using. Any foreseeable...
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    Expanding my system - adding second Midnite classic 200 + 1kw + 100ah

    here's my current sytem https://diysolarforum.com/threads/residential-diy-grid-assist-install-2kw-roof-array-growatt-3k-24v-24v-chins-batt-bank.44121/ I'm planning to add: 1x Midnite classic 200 SCC 1x 24v CHINS 100AH in parallel with the other two for a single bank total of 300ah 4x 250w...
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    Lithium iron phosphate battery safety (LFP)

    My father and I continue to be at odds regarding lifepo4 safety. he is insistent that it is inherently unsafe citing all the tesla fires/failures and inability to contain/stop runaway combustion, as well as insurance companies failing to issue payouts to owners and requiring them to park EVs...
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    how long until DIY solar is dead? -- states are beginning to require microinverters

    https://pv-magazine-usa.com/2022/12/14/to-make-room-for-more-distributed-solar-and-storage-new-mexico-to-require-smart-inverters/ Along the same lines, many/most AHJs are requiring that only licensed electricians can pull permits for solar installs. here's the legislation from NM...
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    Real-life winter production in SW Michigan -- lesson learned; have a backup battery charging source!

    Since installing my PV system this summer I have been starting to pay a lot more attention to solar conditions, overall. needless to say, for the past almost 3 weeks now... my 2kw array has produced between ZERO and 0.8kw a day. the cloud cover has been so thick that at peak production, I'm...
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    Midnite Solar Classic 200 -- why are my battery output wires getting warm?

    I just wrapped up the install on my Midnite classic. fired it up, set the charge limit amperage to 45amps (only 8ga battery wire currently) I confirmed the wire is 8/2 MC dual THHN/THWN and the amp rating at 90degC is 55amps for typical ambient temp at any point I hit 40-45amps of charge...
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    Solar assistant stopped working - Growatt USB timeout issue

    I have my Raspberry pi and system all working. I disconnected the pi from the inverter to finish the case install with heatsinks. i rebooted everything and now SA can't connect to the Growatt. It sees it fine via USB as a compatible device, but I keep getting this error. Any ideas why?
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    FS: Growatt Shine Wi-Fi module

    Located in MI- $40
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    24v 3kw pure sine recommendations

    I'm getting rid of my Growatt in favor of separate components. is Giandel still the "standard" for entry-level pure sine inverters? any other recommendations? I really would like a grid-assist charging feature, so suggestions there would be appreciated
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    Standalone arc-fault solution: Outback Flexware ICS Plus DC combiner box with RSD

    okay... so in the world of residential install, we all know the AFCI and RSD requirements. This is potentially the first off-grid string inverter compatible and UL listed solution. Does anyone know anything about it? from Alte - "The OutBack Power FLEXware ICS Plus DC Combiner Box with PV...
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    my first solar project; mobile radio solar generator go-box

    This project was a ton of fun and my first real dive into solar. I have a 25w QYT KT8900D for emergency comms purposes that I wanted the ability to quickly take anywhere. The added goal was to have both 12v and 120v power available as a solar generator for camping and grid-down situations. I...
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    FAQ: Residential roof installation requirements for the USA

    Hi Everyone. as a part of my residential install research, I have spent weeks working to understand the laws/requirements for solar panel installations on the roof of an occupied dwelling (ie; a home) in the United States. Bottom line-- you need to have a listed solution to all of these...
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    Growatt dashboard completely wrong?

    Hi everyone, I just got my Growatt LVM3000 24v up and running, and I can't make any sense of the dashboard. the daily load consumption graph stopped at 3.7kwh. refreshing the dashboard never changes it. historical data for yesterday shows a total load output power of 51078, which I assume is...
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    locating rafters on shingle roof

    anyone have tips/tricks for finding roof trusses without drilling holes? a "normal" stud finder does not work through the shingles and 3/4" ply. i'm thinking of using some magnets. climb up into the attic and place a magnet on each side of a rafter, then go up on the roof and use a magnet to...
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    residential DIY grid-assist install -- 2kw roof array + Growatt 3k 24v + 24v chins batt bank

    hey everyone, I am starting this thread to document my progress on installation. so, here we go. I will post updates as I complete work. I'm in michigan. Suncalc shows 208deg azimuth and 28deg tilt. PVwatts estimating peak production of 6500wh per day. Core components: 2kw PV array - 8x...
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    120v panel powered from inverter

    I have a SquareD 240v panel I'm installing and planning to power from my Growatt 3000. I am going to run the 120v out to a 40amp breaker which takes one slot and powers one leg of the 120v panel, and will have 3 live slots and 3 dead slots since it's a 240v panel. okay? anyone know? --...
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    check my plans -- DIY 2kw off-grid residential system

    2kw PV array - 8x 250w 12v panels -- https://www.newpowa.com/products/250w-monocrystalline-solar-panel 1x Growatt 3k all-in-one 24v -- https://watts247.com/product/spf-3000tl-lvm-24p/ 1x Chins 100 ah 24v lifepo -- https://smile.amazon.com/dp/B091YCZV2T technically not "off-grid" as I will be...
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    Growatt SPF-3000TL LVM 24p -- manual recommends 2AWG wire size?

    hi everyone. I have my Growatt in hand and reviewing the manual. in battery connection section for the 24v model it recommends a single 2AWG wire(38mm2). that seems small to me. it has a 6kw 5sec burst capability, and 24v 200amp minimum battery capacity. manual says max of 141amps. based...
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    10/2 MC armorlite in attic DC from roof box to disconnect -- attic temp derating?

    hi everyone, so, working on continued planning and trying to nail down wiring from my roof junction box to PV disconnect near the inverter. i'm in michigan. NEC approved flexible MC armorlite a while ago for attic use. yay --...
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    DIY residential 24v off-grid system -- sanity check please

    Hi all... need a sanity check on my system planning at a component level. i'm in Michigan, so definitely have to contend with winter temps. all-in-one inverter/mppt: Growatt spf-3000tl-lvm-24p https://watts247.com/product/spf-3000tl-lvm-24p/ max PV voc=145 PV input= 30-115 panels: 10x 200w...
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    roof panel placement and clearance from utility and edges

    hello everyone, i'm still in the planning phase of a DIY 2kw off-grid system. the wife and I have been debating the array position, and i think we've agreed on a particular space, but wanting to confirm setbacks/pathways which I'm sure will eliminate the particular space we've chosen. based on...
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    small DIY off-grid residential system -- rapid shutdown requirements

    hey everyone! first post and great to meet you all. i'm Eric. I was about to pull the trigger on a complete 48v off-grid system to power our refrigerators and freezers, but have not found any real information on a "DIY" solution for module level rapid shutdown. I am keeping my system all...
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