Residential Solar Photovoltaic (PV) System

The conductor ampacity and the rating of the breaker are then figured by increasing the 133.68 amps by 125%, which is 167.1 amps. The next size up breaker would be 175 A. The size of the conductors would be based on the 167.1 amps if no ampacity correction or adjustments are required (see also 12.2.6 for minimum conductor size if fine stranded ... ................
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