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So... I have these two Sharp 123 watt panels hung on the interior wall of my workshop. 'Prepper Art' and since the first day testing they've never seen sunshine.. . Just waiting for some needy situation.. . Bought back in the days of five, six, seven dollar per watt PV, yeah.. . at $4.80 per...

As I started reading this thread the thought 'ask about mouse pee' popped into mind, though no one could be as careless as me... plans changed and after seven Minnesota winters the 5548 I'd nabbed was totaled - I now have a coffee can full of really expensive stainless hardware & a box of misc...

Okay that is $15 saved from first one bought in December... Beware, Victron is addictive.

Z i p p e r . Name comes from 1923 galoshes brand with a new one-handed fastener where the idea really caught on....

Automotive stuff is not constant duty - 100,000 miles at 55mph equals about 75 twenty-four hour days, and the radiator fans might see 1% of that spread over years of service...

Catch the cold air pooling out aways a bit in front of the evaporator and most any small fan directed flat across the floor makes a conveyor belt to 'mound' up cold air on the far side & gets more hot air back to the evaporator... 1915 farmhouse with afternoon/evening sun heated walls that would...

A final monitor point is heat rise on extended run time to 'find' a 100% duty level - everything kitted together and looking so fine means squat if one is approaching winding sheath insulation limit, and reusing chinesium xfmrs means an unknown variable...

Noalox... used it on 750v cap banks that pushed & stopped 40-ton rail cars, we disassembled and cleaned connections every two years (180k miles)...

Yeesh, hear hoof beats and think Zebras : ) Could be Cat-pee-from-the-factory... Chinesium plastics & quality control: could be an excess of flame suppressant additives such as Antimony used industry wide in IC & SMD bodies, could be plasticizers mismixed and equalizing, could be excess...

Trace : anything with that name on also has some serious years on it - the huge electrolytic caps (at a minimum) are ripe for drying out & decrease in capacity, at least they are stand alone and easy to test / replace... I've also seen where over the years repeated condensation drips have...

True swaging liquifies the soft copper and bonds nearly as a weld would - introducing tinning metal whose electropotential series react below Cu would be such small proportions any nodules would housekeep to keep the copper pristine - and/or heavy plated lugs on bare copper strands that do...

I've seen traveling RVs that somewhen got a refill of suppliers' tank dregs, enough the ammonia-cycle burner & target heat plate are smothered in a oily carbon velvet that halts decent heat transfer - a gentle brushing to get pilot light flame reshaped back as intended & the lower flue cleared...

Yow that must feel good :) I had a buddy get inspector snubbed when his disconnect(s) did not break both (+) and (-) simultaneously... naturally he spent more money to make that go away : / Is the green box off a ways behind the full array photo your utility powerco's distribution transformer?

Overkill IOS app is *my* hero! ( JBD 150A BMS) Rushing to skip town up north with a blizzard forecast I somehow let my Vans 300ah inverter bank get discharged, probably failed to swap out a powerstrip back onto grid and a 280w heater chewed it down... Left at midnight in sleet & snow and got...

Did I see mention of maximum DC current for wire design spec is X 1.25?? A 125% factor accounts for under certain conditions irradiance/temperature lower than STC, the effective short circuit current may be higher….

Whatever gets done having a part of the system connected to two earth ground points with some distance between them is a problem as that becomes a circulation carrier for ground/air field surges that otherwise would be just slow changes…

One little detail I’d be looking into, lightning & providing a better path for a direct strike a distant elsewhere - pick a tree and run a chunk of coarse stranded aluminum entrance cable up it, drive or bury a ground rod the give the far end a dandelion puff out of the strands with clear sight...

Avalanche snow tool is serious work, one has to cut all or nothing as there is no scrape just the top off to make it light work that takes longer... and its wheeled so another tool would be required to get lower than the wheels' axle cutting bar... that said it makes a satisfying whomp-whomp...

On a banks current draw potential its not only the lug surface area and bolt size but the internal plate buss size and ability to shed heat - yea, lifepo batteries have low internal heating but locked in case/holder/compartment in a marine hull in warm water... every degree rise starts eroding...

Such a handsome array.. . what neighbor could ever complain : ) PT wood is shipped wet - keeps fastener splitting down but shrinks as it dries - be vigilant to wood warp glass killer results as it dries PLUS panel clamps slotted at wood attachment points would be good to relieve movement...

How about machine thread screws… into a oversized chunk of > 3/16” thick lexan (or any non-conductive smooth surface ex: blank PCB) sized maybe say maybe 3x the fuse holders footprint - then 3M UHB foam tape for THAT (at 3x the strength) to bond to the battery… really want to have that stay...

Study the nameplates - eBay etc has deals but most are sourced from industrial processes that has low/no concern for economies. My first thought was temperature rise under load, a wham-bam manufacturing circuit wouldn’t care but a 30 or 40C rise would cook other electronics in the same...

. ..or request 'total watts' as purchased and split/cover shipping of two more panels to meet 600w.. . Who knows, you could get two true 150w panels : )

I have a buddy in West Texas that re-worked his remote electric cattle fences and some lighting & gates into using lithium batteries - he got mad at Texas sun & heat that was expensively killing lead batteries and endangering his stock... Yeah he had plenty of scrap to choose from but chose...

I have been shopping HARD for two high rated HSPF5/6 units for a project barn/shop/house I've gotten... Almost leapt this fall yet still seeking more data before $pending money - and I am seeking another 6k or 9k btu one to tack onto my homebuilt van RV... Only? East of Fargo, ND - from 1...

Anyhow - what was unsaid is there is no free lunch - and you would not catch me sleeping under a turbine blade set large enough to generate real power : )

A few insights - Betz Law states a perfect capture of wind to mechanical spin can be at best 59.3% - and if we get 20% we're lucky... so.... 121.3 watts possible from 3.0 ft dia prop (7.1 sq ft) in 15 mph wind... OR: 215.6 watts possible from 4.0 ft dia prop (12.6 sq ft) in 15 mph wind...

I hate simply repeating "https://groups.google.com/g/electrodacus"... Be prepared for Dacians english-as-second-language instructions, or this month's armchair experts thoroughly twisting what should be a basic set-up :)

That screen grab there looks like an ap that mostly works - little elephant electric app - available at Apple store, search for the xiaox OEM app and the elephant icon will appear down the page at bit -- I tried it, GUI is fresher & different but the code is not 100% functional & I feared it...

Looks like flux - have you tried denatured or 92% isopropyl alcohol cleaning?

it is usually bad wuudu to gang terminals together with an unyielding conductor - between the mix of coefficients of thermal expansion & contraction, vibration and/or accidental impact thrust force hazards it boils down to the battery cell case // terminal // internals moving & being (slowly)...

When COVID hit HF stopped coupons - I tried three or five times to dredge one up a few months back and had zero luck... their 'premium' membership has some extra perks but plain 20% off coupons appear extinct. I'd be happy to be proved wrong if someone can find a link...

Are you looking for a table fan or an intake / exhaust fan? If not used as a table fan beware of the turbine fan multi-blade types - if they try to move air that is restricted they'll go into a stall mode where it spins fast & noisy but moves near zero air... that restriction could be just a...

oops - EDIT: "...6000Btu carries 1750 watts heat, will heat 74 gallons of water... 10 degrees f"

Boat A/Cs usually count on an endless supply of water to pump through exchanger and carry waste heat away... Some really sexy compact & sturdy units available, imagine the entire hull heated to near 90*f when sailing in tropical waters, cooling and humidity control not optional for 1st World...