complete mixed system
Hello Everyone, I am sort of new to all this and need some assistance/advice/direction please. I have a mixture of odd and end panels all 12v some have no labels but none are newer that 12 years, I propose to combine all together and charge batteries/battery and run one circuit in my home, my bedroom. I am pretty much disabled and a senior, I spend a lot of time in here watching TV (on 24-7) and some other items as well, air freshener, some CFL and or LED light(s), 5K window A/C year round, and a dorm refrig, computer charger, clock radio, and a ceiling or tower fan at times. I would like to run this circuit for as long as the DC source holds up and automatically switch to backup AC when batts are down, until recharge then auto switch back to DC, repeat, repeat. I know this is not much, but if I can stay off the grid for 3 hours in 24 to me thats better than nothing, I already have the panels, and inverter, and a 100 amp(uncertain) transfer switch, just need diodes, and batt(s) Now for the questions, How do I size the diodes for each panel not knowing some of the specs? If I have a broken glass panel that produces less than the others then the complete system will be at what the lowest value is in the array, correct? Would it be better to leave the weaker panel out ? I have a 2000 watt inverter, if I omit the window A/C and the circuit is well below the 2000 watt level do I need to have a smaller inverter? I read somewhere that one must not oversize the inverter to the load or battery, is this correct? Being on a fixed income I can't afford a new batt(s) would the marine batts at Walmart be my best bet? Do I need a charge controller between the batts and panels? Sorry for all the Q's but I would like to get these panels out of the shed and put them to use, Or would I be better just to sell these panels and start over ? Some are twenty plus years old and used, then others were purchased in between those and 10 -12 years ago new. Thanks for all the help.
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