ABSTRACT
Rapid Shutdown of PV Systems on Buildings is the hottest spot in PV education since it came out in the 2014 NEC. The rapid shutdown requirements of the NEC first appeared in the 2014 NEC and have changed quite a bit since the original versions, mostly in the 2017 NEC. The PV system disconnecting means can be a rapid shutdown initiation device. In many places in America, the main service disconnect is in the basement, and the supply side fused disconnect is the PV system disconnecting means and the rapid shutdown initiation device. For buildings that have PV systems with more than one rapid shutdown type or PV systems with no rapid shutdown, a detailed plan view diagram of the roof shall be provided showing each different PV system with a dotted line around areas that remain energized after rapid shutdown is initiated.
