Pv Module Electrical Installation; Grounding - SCHOTT Solar Photovoltaic Modules Installation And User Manual

2 PV MODULE ELECTRICAL INSTALLATION

All SCHOTT POLY™ modules are pre-wired with (2) Tyco 4 mm
and terminated with Tyco Solarlock connectors. This wire intended for interconnection
wiring of grounded and ungrounded photovoltaic power systems as described in Section
690.31(A). MINUS is indicated on connector, POSITIVE is not marked. Make sure that all
connections are not under load while being connected. Care must be taken to arrange
the system ground so that the removal of one module will not interrupt the grounding of
any other modules. Under no circumstances should the junction box be opened. Series and
parallel connections shall be made by use of #10 (or 4 mm
90°C type sunlight resistant output cables (or equivalent) with Male and Female Tyco™
locking connectors. To comply with NEC 2008 locking ring maybe required.
Tyco part numbers
10 AWG/6 mm 2 Female
10 AWG/6 mm 2 Male
12 AWG/6 mm 2 Female
12 AWG/6 mm Male
2
Locking ring
NOTE: MAXIMUM SYSTEM VOLTAGE IS 600 VDC. All installations, string sizing and
electrical connections should be designed to meet the relevant NEC codes. A qualified
solar professional should refer to the National Electrical Code 690-7(a) to determine the
maximum number of SCHOTT POLY™ modules that can be placed in series. Under normal
conditions, a photovoltaic module is likely to experience conditions that produce more
current and/or voltage than reported at standard test conditions. Accordingly, the values
of I and V marked on this module should be multiplied by a factor of 1.25 when
sc oc
determining component voltage ratings, conductor ampacities, fuses and the size of
controls connected to the PPV output. Refer to section 690-8 of the National Electrical Code
for an additional multiplying factor of 125 percent (80 % derating) which may be applicable.

2.1 Grounding

Several different methods of grounding can be used to provide the required connection
through the frame anodizing. Before installation contact the local code Authority Having
Jurisdiction (AHJ) to determine the proper grounding requirements. Attach all module frames to
an earth ground in accordance with applicable articles of the National Electrical Code (NEC),
250 and 690.
For listed devices, follow the instructions of the Grounding and Bonding Equipment
manufacturer's installation instructions.
If the frame mounting holes are not used to secure the module, they can be used for
grounding.
When using ground wire, select ground wire of copper, copper alloy or other suitable
material no smaller than 14 AWG (2.1 mm), sized accordingly for the photovoltaic system
per NEC, and sized compatibly with the Grounding and Bonding Equipment
manufacturer's installation instructions.
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Select a suitable conductor diameter to
minimize voltage drop. Conductors should
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be between 8-14 AWG (1.5-10 mm
1394462-4
(non conduit) THWN-2 (conduit) or check with
your Solar professional to determine
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correct conductor sizing or wire. Over current
2106207-1
protection shall be in accordance to NEC 240.
2 PV1-F 90°C UL listed wire
2 ) AWG
2 ) USE-2