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General Installation Manual
© Apr 2010, Sanyo Electric Co., Ltd. All Rights Reserved 4/22/10
Mechanical Loading
The modules should be mounted at the
•
four (4) quarter points by the means
shown in Figure 2.
This method offers a maximum load of
•
2,880N/m2 (60PSF) in a static state on
the module surface.
Note: This mechanical loading value
was
tested
using
mounting device.
> Provider: UniRac, Inc.
> Part number: SolarMount®
TOP MOUNTING CLAMPS
Mid clamp and End clamp, F size,
Part No.320029, 320102
WIRING
General
All
wiring
should
•
accordance with applicable electrical
codes.
Wiring
methods
•
accordance with the NEC in USA or
CEC in Canada.
A
qualified,
licensed
•
should do all wiring.
Wiring should be protected to help
•
ensure personal safety and to prevent
its damage.
All modules connected in series should
•
be of the same model number and/or
type.
Do not connect modules in parallel
•
without using a connection box.
Module Wiring
The number of modules that can be
•
wired in series is recommended at ten
(10) or fewer. If connecting eleven (11)
modules
in
series,
temperature conditions and follow the
National Electric Code (690.7) to
ensure
compliance
voltage limitations.
Modules are not designed for "off-grid"
•
or battery charging systems, because
of their operating voltage. Therefore, it
is not recommended to use them to
charge batteries.
These
modules
•
installed
bypass
diodes.
modules are incorrectly connected to
each other, the bypass diodes, cable,
or junction box may be damaged.
Array Wiring
The term "array" is used to describe
•
the assembly of several modules on a
support
structure
wiring.
Use copper wire that is sunlight
•
resistant and is insulated to withstand
the maximum possible system open
circuit voltage.
Check local codes for requirements.
•
Earth Ground Wiring
Grounding should be carried out by
•
attachment to the module or array
frame, to avoid the hazards of electric
the
following
shock or fire.
The array frame shall be grounded in
•
accordance with NEC Article 250
(USA) or CEC in Canada.
Bonding shall be by a positive means,
•
such as clamping, riveting, bolted or
screwed
soldering or brazing. If the bonding
means depends upon screw threads
two or more screws or two full threads
be
done
in
of a single screw must engage the
metal.
All the washers illustrated in Figures
•
should
be
in
3.2 and 3.3 are required as part of the
grounding connection.
Great care should be exercised to
•
professional
ensure that corrosion caused by the
grounding
Corrosion can increase the resistance
of the grounding connection on the
module, or can even cause the
grounding connection to fail entirely.
Corrosion can be caused by the effects
of weather, humidity, dirt and so on. It
can
dissimilar
(galvanic action).
is aluminum/magnesium alloy.
screws, etc.) must be stainless steel
unless otherwise specified.
check
local
Length of self-tapping screw or bolt
•
should not be more than 0.78''(20
mm) in order to avoid contacting the
with
maximum
back-sheet of the module.
The ground wire must be No.12 AWG
•
(3.5mm
Recommended torque value is 2.3N.m
•
(20in-lb).
Each ledge on the module frame has
•
two smaller holes for self-tapping
contain
factory
screws (0.165'' diameter (4.2 mm))
If
these
and
(0.205'' diameter (5.2 mm)).
ground holes are marked with a "G"
adjacent to their location on the frame
rail (see Figure 3.1).
must be connected to the module's
metal frame at one of these location.
There are two methods available to
with
associated
•
ground modules. Select one method.
connectors,
or
means
be
also
be
caused
when
metals
are
in
Note that the module frame material
All fasteners (nuts, bolts, washers,
2
).
two
larger
holes
Ground wires
3
>Wire connection using cup washers
(see Figures 3.2 and 3.3)
・ The use of cup washers is to prevent
wire from slipping out from under the
screw head (and/or the flat washer).
・ Make sure that the cup washer is
placed between the wire and the
module frame.
・ Choose an adequate size for the cup
washer and the flat washer so that the
wire is fully clamped between them.
・ Note: Cup washers are also called as
terminal cup washers.
・ The cup washers should be stainless
welding,
steel, or a cup washer made of brass
may be used only if a large flat washer
made of stainless steel is inserted
between the module frame and the cup
washer.
・ Choose the adequate size for the large
flat washer (between the module frame
and the cup washer) so that the cup
washer doesn't contact the module
frame and is fixed stably to the module
frame.
avoided.
Ground Location
(smaller holes for self-tapping screw)
two
contact
Ground Location
(larger holes for bolt and nut )
for
bolts
These
Module Ground Position
P V U - B 5 0 . 2
I P 6 5
6 0 0 V
P V U - B 5 0 . 2
Label
Junction Box
Backside
The ground holes
are on the backside of
the module frame.
Figure 3.1
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