February 24, 20233 yr I'm planning to setup a smaller 800W off-grid solar panel system for my weekend cottage in Western Europe. I already bought the necessary parts, cables, and accessories, here's my design sketch for this off-grid solar panel system: Parts: Batteries: 4x 120Ah 12V BIG Professional Solar DC Solar Panels: 8x 100W 12V Renogy Monocrystalline (compact design version) Charge Controller: EPEVER Triron 4215N 40A 150V MPPT 12/24VDC + EPEVER MT50 Remote Control Inverter: Novopal 3000W 24V Pure Sine Voltage Converter 1x 150A ANL Fuse (between the battery bank and the inverter) 2x 15A Inline Solar Panel Fuse (for the 2 clusters of 400W solar panels) 1x 15A 500V DC Curcuit Breaker (between the solar panels and the charge controller) 1x 40A 500V DC Curcuit Breaker (between the charge controller and the battery bank) necessary Y plugs, 2x 10m of standard 10AWG (6mm2) solar cable extension cords and thick 3/0AWG (95mm2) cables for the batteries and the inverter Short Plan Summary: 1.: connect the 4 batteries in series AND parallel getting 24V of 240Ah 2.: connect this battery bank with the 3000W 24V inverter, there's a 150A ANL fuse between the inverter and the battery bank 3.: connect the EPEVER charge controller with the battery bank, there's a 40A 500V DC circuit breaker between them 4.: create 2 clusters of 400W solar panels in series (20V 5A => 80V 5A), then connect these 2 clusters with 15A inline fuses, thus getting the 800W solar panel array (2x 80V 5A => 80V 10A) - the EPEVER charge controller can handle only 150V Max PV 5.: connect the solar panel array to the charge controller, there's a 15A 500V DC circuit breaker between the solar array and the charge controller Questions: 1.: As the EPEVER charge controller can handle only 150V Max PV, the solar panel array consists of 2 clusters of 400W solar panels in series, then connect them in parallel. Is this a correct way to connect these 8x 100W solar panels to my EPEVER charge controller in my case? 2.: Are the 15A inline fuses, the 15A, and 40A circuit breakers, and also the 150A ANL fuse correct/applicable for this system? 3.: When the solar system is fully connected, is there a recommendation for where to connect the inverter to the battery bank to? Connect closest to the charge controller (i.e.: connect the inverter cable directly to the battery tab/terminal/bushing where the charge controller connected too), or farthest from the charge controller connection (i.e.: connect the inverter cable essentially the opposite/farthest battery tabs/terminals/bushings) Any corrections, suggestions, and help is highly appreciated.
March 5, 20233 yr Author Thank you for your answer! Is there a particular busbar and/or fuse(s) you recommend (brand, type, cheaper ones or maybe more expensive ones) ?
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