MPP Solar Menu Tutorial . . . last item question

MetalFiberMetalFiber Posts: 12Registered Users ✭✭
Okay.  I made this quick video (kinda) on an MPP Solar Hybrid Inverter Menu Tutorial, but the last item on there is eluding me.  I have no idea what it does.  It say NEC, but there's nothing in the manual to explain it.  Hoping someone can help.  Thanks.

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