Outback Power Systems PV Ground-Fault Detector Interrupter (GFDI) Installation - Manual (Page 3)

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IMPORTANT SAFETY INSTRUCTIONS
KEEP THESE INSTRUCTIONS
This product is intended to be installed as part of a permanently
grounded electrical system as shown in the wiring diagrams. The
following important restrictions apply unless superseded by local or
national codes:
• Ground equipment is marked with this symbol:
• The GFDI is designed for indoor installation or installation inside a
weatherproof enclosure. It must not be exposed to rain.
• Must use a UL approved crimp lug on the cable attached to the
breaker stud.
NOTE: Outback supplies a #2 AWG ring terminal with the GFDI and
recommends a #2 AWG cable when the GFDI is connected to an 80 amp
breaker. (#3 AWG is the minimum allowable in this application.
See Standards and Requirements, page 3.)
Introduction
The OutBack Power Systems’ Ground Fault Detector Interrupter (GFDI) is
a safety device for a photovoltaic (PV) array. In the event that the array
becomes shorted to ground, it disconnects the PV system from the
batteries.
• The GFDI meets mandatory UL 1741 low-level ground-fault protection
requirements for roof-mounted photovoltaic energy systems to
prevent fires.
• The GFDI meets the requirements of the 2008 NEC section 690.5 (A)
through (C) to reduce fire hazards when wired according to the wiring
diagram contained in these instructions.
OutBack GFDI Products
• OBB-GFDI-80-150VDC-PNL (one 0.5 amp breaker ganged with one
80 amp breaker with common trip)
• OBB-GFDI-80D-150VDC-PNL (one 0.5 amp breaker ganged with two
80 amp breakers with common trip)
• OBB-GFDI-80Q-150VDC-PNL (one 0.5 amp breaker ganged with four
80 amp breakers with common trip)