09-18-2021, 03:36 PM
I generally suggest a surface mount circuit breaker on the positive line right before the controller in my builds. Normally for 10 gauge I go for 30-40 amp depending on the output of the combined panel imp. Four $50 250 watt panels from Santan wired in parallel could possibly exceed 30 amps so I suggest 40a.
Actually unless there was shading issue I would suggest running the panels 2 sets of 2 to drop the current. Only Jbox brand is producing 50 amp branch connectors. Unfortunately since the T Tocas brand was bought out, their circuit breakers voltage ratings were dropped from 72 volts back down to the standard 48 volts. Now the only higher voltage options is Midnite breakers in a baby box.
Actually unless there was shading issue I would suggest running the panels 2 sets of 2 to drop the current. Only Jbox brand is producing 50 amp branch connectors. Unfortunately since the T Tocas brand was bought out, their circuit breakers voltage ratings were dropped from 72 volts back down to the standard 48 volts. Now the only higher voltage options is Midnite breakers in a baby box.
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