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© 2011-2013 Silfab Ontario Inc. - Specifications in this manual are subject to revisions without notice
SAFETY AND INSTALLATION MANUAL FOR
PHOTOVOLTAIC MODULES
each module. This total voltage should be
compatible with the range of input
voltages admissible for the inverter to
which the modules are connected.
7d) Grounding
•
The module frame or array must be grounded
before wiring. For grounding, use material that
is certified according to UL 1703 – in particular
the grounding should be performed by a
qualified electrician using grounding methods
in accordance with article 250 of NEC and
relevant local codes and regulations.
•
SLA/SLG modules can be grounded using third
party grounding devices as long as they are
certified for grounding modules and the
devices are installed according to the
manufacturer’s specified instructions.
•
Examples of acceptable grounding methods
include the following (must be verified with
local codes and regulations):
o
Attach a separate approved ground wire to
one of the holes marked with a ground
label on the module frame with a UL
approved ring terminal or UL listed
grounding lug.
o
Schletter Rapid Clamps are acceptable
when using the proper size to match
Silfab’s 38 mm frame.
o
WEEB clips compatible with the chosen
racking mounting clip are also acceptable
when properly installed (ensuring an
electrical bond between the module frame
and the grounded racking).
•
Ensure that the grounding area for the
connection is clean and free from oxides or
any debris that could impede the electrical
grounding.
Always follow safety procedures when
installing any grounding/mounting system.
7e) Environmental Considerations
•
SLA/SLG modules should be installed in a
location where there is no shading throughout
the year.
A module is considered "shadow-free" if it is
unobstructed across its entire surface for the
whole year. Even on the shortest day of the
year, unobstructed sunlight can reach the
module.
Ensure there are no obstacles to block light
near the installation site.
•
Lightning protection is recommended for PV
systems that are to be installed in locations
with high probability of lightning strikes.
•
Although Silfab modules are designed to be
able to withstand high snow pressure, in
regions with heavy snowfall in winter, select
the height of the mounting system so that the
lowest edge of the modules is not covered by
snow for any length of time.
