Many string inverter systems sold today require a workaround such as additional switches, control lines, or equipment modifications in order to comply with rapid shutdown requirements. With Enphase, you are all set. Rest assured that all Enphase systems installed inherently meet NEC 2014 and NEC 2017 rapid shutdown requirements. It’s a function of how they work.
When the AC utility source is removed in any way – through an AC breaker, AC disconnect, or removal of the main meter, for example – the microinverter performs its rapid shutdown function.