APsystems QS1A 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 1m
(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.
