My system begins with 4 x 260 Watt panels wired 2S/2P, and in this configuration they will generate (at Vmp/STC) 62 volts and 16.8 amps.
I have a measured 138 feet that I must traverse underground to bring this into the home and into my charge controller (using #4 direct burial wire). Normally this would require trenching to 24" depth, but if I add a GFCI breaker box fused at 20 amps at the above ground juncture where the #10 panel wiring will transition to #4, can I by so doing get the burial depth down to only 12"?
I have a measured 138 feet that I must traverse underground to bring this into the home and into my charge controller (using #4 direct burial wire). Normally this would require trenching to 24" depth, but if I add a GFCI breaker box fused at 20 amps at the above ground juncture where the #10 panel wiring will transition to #4, can I by so doing get the burial depth down to only 12"?
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