Hello! Thank you for whatever info you may help me with. I'm completely new to solar and learning, from Puerto Rico, post-hurricane Maria (a total cataclysm). Before, I used to hook a Windynation VertaMax 1500W 12V inverter to my running car's battery and had a pretty good generator for all those months without power. Eventually my father lended me a small 12V PV system from my sister who moved out, and I liked the convenience of flipping a switch and not having to pop my car's trunk and do all that. Grid in PR is shot even worse than before post hurricane, so I get very frequent power outages.
Current materials are 3 335W GCL 38V 8.82A panels, 2 Trojan T-105 6V, Epever Tracer 10420AN 100A 150V MPPT. Max power draw (load from inverter) will be 7-8A for washing machine cycle (family of 3), 700W microwave oven. Other than that, 0.8A standard AC 120V fridge (most important), 85W LCD TV (grandma, looking for a more efficient one), 12V DC fan (.5A, 6W). Inverter eats 9.6W for operation. All lights are solar, other fans are Li-battery 10,000mAh fans, so no problem there. Main TV set is 50W 120V AC, maybe charge phones / laptop, small stuff.
The question's in the subject: how much amps (at most) will my MPPT put out to batteries? Charge controller manual states 2AWG to battery (altough I see max current for that size wire is 94A). My guess the answer is depends on how much PV you're feeding it / charging specs of the battery (at float charge of 13.5V, 1005W / 13.5V = 74.4A). This is why it's always recommended to use higher voltage systems... but in the former, am I correct?
Reason I did not go 24V / 48V (original plan) or over was money and low power requirements on load. A) Already had 1500W inverter, saved $ there ($250+), B) from ceiling to location 15ft at most, C) would have had to purchase 2 additional T-105's ($300 more). But orig. plan *was* 24/48... at least MPPT will accommodate for future. Do know lots of people here hate 12V systems and braced for harsh criticsism from so much reading as lurker xD
All my limited experience has been with PWM's. I understand MPPT's will change the output amps to the battery from what my PV system is capable of sending in series (9.41A Isc).
Epever manual: https://www.epsolarpv.com/upload/fil...MS-EL-V1.1.pdf
Solar panel specs: http://sepbatteries.com/media/add_info/gcldatasheet.pdf
Inverter: https://www.windynation.com/Inverter...440?p=YzE9NDg=
Current materials are 3 335W GCL 38V 8.82A panels, 2 Trojan T-105 6V, Epever Tracer 10420AN 100A 150V MPPT. Max power draw (load from inverter) will be 7-8A for washing machine cycle (family of 3), 700W microwave oven. Other than that, 0.8A standard AC 120V fridge (most important), 85W LCD TV (grandma, looking for a more efficient one), 12V DC fan (.5A, 6W). Inverter eats 9.6W for operation. All lights are solar, other fans are Li-battery 10,000mAh fans, so no problem there. Main TV set is 50W 120V AC, maybe charge phones / laptop, small stuff.
The question's in the subject: how much amps (at most) will my MPPT put out to batteries? Charge controller manual states 2AWG to battery (altough I see max current for that size wire is 94A). My guess the answer is depends on how much PV you're feeding it / charging specs of the battery (at float charge of 13.5V, 1005W / 13.5V = 74.4A). This is why it's always recommended to use higher voltage systems... but in the former, am I correct?
Reason I did not go 24V / 48V (original plan) or over was money and low power requirements on load. A) Already had 1500W inverter, saved $ there ($250+), B) from ceiling to location 15ft at most, C) would have had to purchase 2 additional T-105's ($300 more). But orig. plan *was* 24/48... at least MPPT will accommodate for future. Do know lots of people here hate 12V systems and braced for harsh criticsism from so much reading as lurker xD
All my limited experience has been with PWM's. I understand MPPT's will change the output amps to the battery from what my PV system is capable of sending in series (9.41A Isc).
Epever manual: https://www.epsolarpv.com/upload/fil...MS-EL-V1.1.pdf
Solar panel specs: http://sepbatteries.com/media/add_info/gcldatasheet.pdf
Inverter: https://www.windynation.com/Inverter...440?p=YzE9NDg=
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