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To be fair...it is a simple emergency back up system and the 4 panel's can only produce 21.64 amp's mazimum under Ideal and perfect condition's...if I had or was running a lager complicate system I would probably use both method's for a litany of reason's.

I use a 60 amp MPPT charge cotroller. Yes I research before I do anything. Sometimes I get it right and sometimes I get saved. I look at, and like the analogy of electricity can be compared to a river. Like I said I have not been able to find one thing that suggest's that panel's in series...

It's only a 400 watt system. I go parallel for the amperage because amperage is current and the higher the current the faster and more complete the charge that occurs. Since I have a small 12 volt system the 18.5 volt's are plenty to charge the batteries so Current seems the better choice for...

Fair enough...Thanks for your response!

You could go with a charge controller like mine with the panel's you currently have easily! I paid 100 dollar's for my 60 amp OOYCYOO!

I run a 60 amp OOYCYOO. Running a 12 volt system max open circuit volt's are 48v (voc), max power volt's are 36v (vmp) and 780 watt's Running a 24 volt system max open circuit volt's are 96v (voc), maxpower volt's are 72v (vmp) and 1560 watt's. They make a 100 ampsolar charger! So far mine...

Wire size and NEC Code info links https://duckduckgo.com/?q=wire+sizing+chart+national+electrical+code&t=brave&ia=web

Thank you for your response! And your help!

Is it more effiect for charging to run one verses the other or simply a matter of keeping volt's and amp's within the limit's of wire's and the charge controller?

The different manufacturer's panels are very similar. One produce's 18.1 volt's and 5.53 amp's and the other produces 18.5 volt's and 5.41 amp's? Since they are so close it should be ok correct? Thank's for the help!!!!

To be sure...if I remove the MC4 connector's from the cable's...believe me they won't be live!!!

I will test the situation out with a special circuit just for testing a regular light switch out!

I don't suppose you have the link for the page they are listed on do you? I searched for hour's and decided to just remove the MC4's and put a small box up andinstall busbar's and just hardwire them.

I have been looking for 12 volt light switches for my solar lighting circuit's, but they are either small version's of regular light switche's. You can find toggle, rocker, wall switch and remote switche's...the wall and remote switche's measure approximately 1 5/8×2 5/8 or similar size. Can...

I agree! There other way's to be sure...I may or may not need to diconnect frequently, howeever a Disconnect breaker before the charge controller will have the same result! I just liked the idea of the set up for convience and the sppearance! I appreciate your response!

I'm looking for MC4 connector's that can be put on a combiner box so I can just snap the MC4 cables right up to a combiner box. Does anyone know where I would be able to locate 4 of them? Alibaba has some but I'm not comfortable with starting an account there. Any help would be greatly...

But I'm disabled and money is then...so I'm limited, how ever I got a great deal on a 500 watt generator for 43 more dollars...just happened on it and it was on a good sale!!!

Yeah I was aware of that it couldn't provides power while charging so I wasn't concerned about that issue...just seemed for the money it would be a good buy! However I ran across a much better deal. I got a KYNG 500w solar power generator for 222.99. It had good reviews and a good rating so I...

I know the answers to those questions already...I was wanting to know if anyone knew of it's quality.

Hi I'm from Texas I hope eeveryone is having a blessed day! Can anyone tell me if the flashfish 300 watt solar generator is worth owning? I will try to attach a couple pictures. Any help would be wonderful...Thank You To see it on amazon, click here