Hi Wrenchers, I am configuring a 50KW roof array and plan to use a 3 phase 50KW central inverter. There are multiple options for the lugs/fusing for the Inverter incoming DC conductors. PV Powered for example offers everything from a single set of unfused lugs for the Positive and Negative input up to 5 x 60A fused lugs. My question is if I am using a external fused DC string combiner with integrated DC Disconnect and bring the single set of conductors into the inverter with the option of 1 set of lugs with no fuses in the inverter what protects the large conductors between the fused string combiner/Disco and the inverter if there was a problem such as a short on these conductors?
Any and all feedback is appreciated. Al Frishman AeonSolar (917) 699-6641 - cell (888) 460-2867 www.aeonsolar.com
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