5.0 ELECTRICAL INSTALLATION
5.1 PLANNING AND DESIGN
• All modules are manufactured with a sealed junction box and pre-attached cables and locking connectors. These
components should not be modified or tampered with in any way.
NOTE: Installers shall ensure that the polarized locking connectors are from the same supplier when connected on the
same string. Do not mix polarized interlocking connectors from different manufacturers—including connections at the
inverter, combiner boxes, and modules. Doing so will void the warranty. Refer to section 8.4 for connector types.
• Ensure connectors are clean and dry before establishing connection.
• Ensure that all wire, fusing and disconnects are appropriately sized for the system design according to national,
regional, and local codes.
• Electrical characteristics are within plus or minus 5% of rated values for Isc, Voc, Impp and Vmp. Pmax ranges between
-0/+5W at standard test conditions (STC). However, modules will operate under conditions which may be significantly
different than STC. SunEdison suggests multiplying specified ratings by a minimum of 1.25 or more when specifying
the system and balance of system components. Refer to local codes before planning and design of the system.
• Determine the maximum number of modules connected in series using the following formula: Ns = Vmaxs / Vocm
Where:
N
s
equals the maximum modules in series
Vmax
s
equals the maximum system voltage
Please refer to module data sheet for actual Vmax rating, as some models are rated for 1000 V UL and 1000 V
IEC.
Voc
m
equals the module open circuit voltage at coldest conditions for the site (refer to local codes)
WARNING: Installers shall adhere to all applicable local, regional, and national codes and regulations when designing
and constructing the photovoltaic system.
NOTE: In colder climates, it may be necessary to further reduce the maximum number of modules in series by using
Voc
m
at the minimum expected operating temperature.
5.2 MODULE WIRING
• The module includes wires and polarized locking connectors from the junction box on the back of the module. Field
replacement of connectors or cables must be avoided and it will invalidate the product warranty. Polarized locking
connectors of the same type and make are needed for all series string wiring. The maximum operating temperature of
wires and connectors should not exceed 85ºC.
• When installing panels in landscape orientation, use of the 1.3 meter lead lengths will ensure enough cable length to
make adjacent, module-to-module, string connections, assuming a maximum spacing of 50 mm between adjacent
modules.
• When installation panels in portrait orientation, use of the .55 or 1.0 meter lead lengths will ensure enough cable length
to make adjacent, module-to-module, string connections, assuming a maximum spacing of 50 mm between adjacent
modules.
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Installation Manual: SunEdison Silvantis P300 | M330/F330/D330
© Copyright 2014 SunEdison, Inc.
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