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After i retired as “electrical engineer” from a very major player who is known worldwide by a two letter acryonim i have worked in power specializing in old housing and for the local farming industry who will pay big bucks when that 1930’s three phase 100 hp. pump fails on a very hot spell. 480...

The magnasine does not depend on the grid to be up, It operates standalone when in invert mode, the internal AC power relay does disconnect with the grid when in invert mode, it does not “see” the grid. It does not synchronize with the grid A grid tie system does a shutdown when the grid is...

Schneider Electric and their subdivision Square D market multipole relays that have dc coils or ac coils, rated to switch AC or DC or three phase common coil voltages are 12 dc 24 dc or ac 36 dc 48 dc 110-145 AC 220-265 AC 277 AC I have never seen an industrial relay capable of energizing...

If anyone is really intrested in adsorbtion refrigeration I have the Dometic Factory training manual for the Dometic RV referigerator. Includes theory of operation, diagnostics, etc. It has been very valuable. I have buried in Adobe Acrobat in PDF format It might still be available at...

There is one major mistake in your wiring, you have the ground and neutral bonded togather in the critical loads sub panel, that is not what the NEC wants you to do. You can only bond the neutral buss to the ground buss in the main box only. The sub panel needs to have seperate busses for the...

The thermal blanket solutions are for NMC batteries nickle-maganese-cobalt & lithium these batteries are the ones that have thermal runaway. These are mostly small cylinderical cells such as the 16500 and 32500 as found in automobiles such as the tesla and many others ganged up in banks...

It is perfectly acceptable to every inspector that I have dealt with to use the Bryant sub panel as 120 volt only, Use one breaker from the inverter output and “back-feed” it from the inverter and jumper L1 and L2 togather at the top as in your drawing, this is legal and acceptable

Cant say anything about Texas but in California its your local building department who references databases of acceptable equipment approved to UL1077SA frequency/watts title 25 compliant as maintained by the State Public Utilities department (PUC) which maintains lists of what types of...

BTW... These antiques are still in use.....for emergency use only....just alligator clip to dead battery...no controller needed. After i retired from high power communications due to the physical effects of working in a high EMI/RFI environment i contracted with my former employer to provide...

Somehow memories from dealing with my Chinese electronics has left a foul taste for dealing with offshore sellers. I have been hoping that Elon Musk would build a LFP factory here...in Nevada

Apples and Oranges..... Doing load diversion as a stand alone is way different than loading down the panels so that the Maximum Power Point Controller cannot find the MPP due to the loading on the panels by some secondary controller. I have discussed this scheme with lead designers of the...

BEFORE.....you buy, research tech support from Victron and Samlex....I did...not impressed with Victron support, Samlex is there. Tech support is exactly why I bought Midnight.....I called them all, mostly you will get script readers, at Midnight if you ask a though question you get a very...

Wait a minute here... IT IS NOT RATED 250 volts DC..........Its a 2 pole 50 amp breaker rated 240 volts AC and 48 volts DC Square D division makes all QO line breakers rated 120 volts AC and 48 volts DC for each breaker, a 2 pole breaker is rated 240 volts AC Square D is a division of...

OK so my Magnasine MS4024 main transformer does have a center tapped main winding so when it is in battery charge mode this transformer is in parallel with the utility transformer on the utility side, Is it also helping balance the non balanced load in the rest of the installation? Is this not...

A PWM controller switches at 28khz with lots of harmonics, some make more interference than MPPT types, But in a direct comparison: a Midnight Classic 150 doing a 72 volt conversion to 28 volts verses a Morningstar 60 amp PWM controller doing a 36 volt conversion to 28 volts The Morningstar...

Smallest inverter I have ever seen.....I’ve not got it open yet, so no details on the guts.....

Proof indeed as to the quality of the Gudgel’s Engineering prowess Robin and boB Gudgel designed and engineered the following brands..... TRACE>>>>>>>ZANTREX>>>>>>>SCHNEIDER OUTBACK SOLAR MIDNIGHT SOLAR

On a Transfer Switch only the hot wires are switched.......Only L1 and L2 for a U.S. based split phase system. Neutral IS NOT switched nor does it need to be. There will be NO CURRENT FLOW between the grid power and solar or generator if ALL THE HOT WIRES are switched. Correct wiring is to...

Yes, Cornell Dublier is still around, mostly capacitors I think........considering that transistors were in infancy in 1955 I would bet this inverter uses a vibrator to chop the dc, I’m going to carefully open it. Needs to be preserved for history Found at local recyclers....

1: 8 ga wire even if rated to 90 deg. C when connected to terminals not rated 90 deg. C is rated only 40 amps... 2: continously operated device requires a additional 25% ampacity ( if your inverter is capable of operating at full <EDIT> for more than 2.0 hours <END EDIT> power then wire...

AFAIK......Arc fault and Ground fault is required in the code, it is an automatic red tag here, as is rapid disconnect in most situations. Here in CA , if you do not have rapid shutdown, and rapid disconnect most firefighters will not risk their lives, better to let your insurance company pay...

Cheep Chinese Chit........no name Cheep breakers THERMAL Good Ones MAGNETIC/HYDRAULIC MAGNETIC/HYDRAULIC Breaker Manufacturers Carlingswitch Circuit Breaker International (CBI) Littlefuse Anchor Marine.......really rebranded carlingswitch Blue Seas....really rebranded...

Hey what can I say, instant expert....he has a 200 amp 120 volt service.....and yep thats all you can get...doesnt know the difference between a 120 volt service and a 120/240 split phase, Dont waste your time

Way back in the late ‘65-66 at G-E we were obtaining Arco Solar SM50’s and SM-55’s for the smoking deal of $950 each.....G-E was the communications contractor for ARCO both the solar division and the refineries located in the LA area, we used then on our communication sites on mountain tops in...

kathyg...... do get some good quality distilled water and a good hydrometer. Start with an assement of what you have, top off the cells, charge for 10 hours or so , let sit idle for 2 hours then check each cell with a hydrometer several times....chart the result....repeat the procudere Do set...

They are worth a lot as core value...

Two things that I learned from years of expereince with Dometic and other adsorption referigeration is that the cooling fins on the rear of the units need to keep clean of dust and a bit of air over the radiator on the back will help a lot, a small computer type fan will greatly improve cooling...

From the Scamazon Advert......material monocrystalline silicon....WTH.......monocrystalline cells crack when flexed There is no such thing as monocrystalline flexible panels

Shoot....

I’m a serious off gridder, born in the backwoods of Alaska, my place there is 25 miles from the grid, here on the left coast I’m not more than a few miles away. I don’t have a POCO, I make all my electricity with the sun. Never had a power outage or system shutdown in 25 years. I have two Grape...

Charge them very slowly, you will probably be able to recover them. One of my battery banks were recovered on the way to the recyclers, a brand new set of Rolls-Surette S-530 L-16’s we’re down to .05 volts for the set. I connected 4 “12 Volt“ solar panels in series to the stack of 4 batteries...

Im way too experienced to cut corners.....if something were to happen any lawyer would have a field day with my experience in electrical.....and I dam sure dont want someone to die becuase I cut a corner...... 1st license Federal 1st phone, march,’64, State of Alaska electrical contractor ‘65...

Ya got it, very rarely i will be forced to parallel my sets, but I allways seperate the systems so they can recharge to their own settings. In my shop you can not buy one battery for your 2 battery diesel truck, I do not like having to deal with the warranty issue. You need one there is kmart...

With my system a very small inverter will fill my needs for daily use, i do not cook electrically , so referigeration....danfoss compressor at 24 volts 42 watts start and run, led lights , I use an Exeltech which is the quietest inverter made (EMI/RFI) , no noise in the stereo, etc, but i do run...

I agree with @DerpsyDoodler on this, I am tearing down a 16S2P pack with an intact Daly 16S BMS and rebuilding as two 8S2P packs even though i will spend twice as much for the new BMS units with all the accessories to make a complete system for the reasons listed: 1) redundancy.....the battery...

@SpongeboB Sinewave are you boB Gudgel from Midnite........the spelling of boB gives you away..... Patiently awaiting my Rosie, my MagnaSine is getting tired....

Same here, their Chrysler car alternator turbines are garbage....

A better solution would be 2 standard off the shelf 72 cell panels (36 volts ea. @MPP) wired in series and then put in parallel with your 72 volt panels. In that case you would not be limiting either string (s) of panels. The voltages would be the same but each string would operate at their own...

I have confirmed the Blue Seas rating for their breakers....it is 32 volts DC maximum

It is not at all clear to me why the frequency would change like that, I have never seen that with the MS4024 AE There are some very clear differences between the AE models and the PAE models, one is the ability to load share that I have heard that the PAE is capable of, Another difference if...

Schneider Electric (Germany) does make din rail breakers in Germany and this breaker does fit the Schneider Solar (America) XW Inverters Kinda makes sense that Schneider (America) would use Schneider (Germany) breakers There is a great support staff at Northern Arizona Wind Sun.....they sell...

If each battery has it’s own BMS then the current would be 1/2 total load on each BMS ( much better way to protect each battery)

Did not understand that they were 120 volt air conditioners, people using two inverters are more likely to use split phase, I assume.... but you know where ass...uptions lead...

Midnight Solar does have a dual MPPT controller. It is specifically designed for two separate array’s with different orientation. Not sure but I believe it is called the Barcelona, but I will check on that and post what I find.

Im not Knuk but here in California that issue can be solved by a red placard at the meter location describing where the main panel and shutdown is located, even on the other side of the building. There must be that kind of exception in other areas as it is not legal to route utility wires over a...

I can confirm that Midnight does indeed sell surplus, refirb, and damaged items on the “garage sale” portion of their website, also by inquiring. Every so often they will add a bunch of customer returns, refirbs, and surplus items. I scored a Classic 150 from there at there at so low a price...

On their worst day FedEx and UPS are way better than USPS on their very best day, 29 not delivered packages in 2 years. Louis DeJoy must GO.....Cant deliver to an open business in a business park that has been there for 50 years not 2000 feet from the local postoffice....incompetence never seen...

BEWARE........most commercial three phase is delta hi-leg and IS NOT COMPATABLE with single phase inverters. Residential type inverters can only be used on 120/208 three phase at a reduced capacity......they will feed in at 120 volts not at 240 volts, there is no common neutral in delta...

Quality SCC’s do have shunts at the battery , even quality inverters have them as well, All my Midnights have them as well as my Magnasine Inverter/charger