Helios 6T Series, Operation/Maintenance And Installation

Page: 16 / 27

INSTALLATION MANUAL – 2012
15
HUSA-EN-UL-REV 2.0 APR 16 2012
Module Wirings
• The wiring must ensure that the loss of nominal potential is ~1% and no more greater than 2%
•The recommended rating for wiring connections is 6mm
2
and never less than 4mm
2
, (10 AWG
recommended and never less than 12 AWG). Use only cable listed by UL 4703 PV Wire, 90ºC/194ºF
thermal insulated in accordance with local fire, building and electrical code.
RECOMMENDATIONS FOR INSTALLATION
The modules must be secured to structures that can support them using anchors that take into account the
constraints imposed by the resulting movements of the processes of thermal expansion and contraction.
To achieve the maximum annual yield the installer shall determine the optimum orientation and tilt of the
PV modules. Generation of maximum power occurs when sunlight shines perpendicularly onto the front
surface PV modules.
Avoid Shading
Even the slightest partial shading (e.g., from dirt deposits) will cause a reduction in yield. A module is
considered "shadow-free" if it is unobstructed across its entire surface regardless of the time of year. Even
on the shortest day of the year unobstructed sunlight should reach the module’s front surface.