APsystems DS3 Series Installation/User Manual
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4.APsystems Microinverter System Installation
4.3 PV Rapid Shut Down Equipment
This product is PV Rapid Shut Down Equipment and conforms with NEC-2014 and NEC-2017
section 690.12, for AC and DC conductors, when installed according to the following
requirements:
Microinverters and all DC connections must be installed inside the array boundary.
The array boundary is defined as 305 mm (1 ft.) from the array in all directions, or 1
m (3 ft.) from the point of entry inside a building.
This rapid shutdown system must be provided with an initiating device and (or with) status
indicator which must be installed in a location accessible to first responders, or be connected
to an automatic system which initiates rapid shutdown upon the activation of a system
disconnect or activation of another type of emergency system.
The initiator shall be listed and identified as a disconnecting means that plainly indicates
whether it is in the “off” or “on” position. Examples are:
Service disconnecting means
PV system disconnecting means
Readily accessible switch or circuit breaker
The handle position of a switch or circuit breaker is suitable for use as an indicator. Refer to
NEC for more information.
Additionally, in a prominent location near the initiator device, a placard or label must be
provided with a permanent marking including the following wording:
’PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN’ The term ‘PHOTOVOLTAIC’
may be replaced with ‘PV.’
The label requires reference NEC 690.65 to meet the audit requirements.
