4.0
Electrical Connections
Modules may be connected in series and/or parallel to achieve the
desired electrical output as long as certain conditions are met. Please
use only the same type of modules in a combined source circuit.
SunPower recommends that all wiring be double insulated with a
minimum rating of 85° C (185° F). All wiring should use flexible copper
(Cu) conductors. The minimum size should be determined by the
applicable codes. We recommend a size not less than 4mm
insulation type should be appropriate for the type of installation
method used and must meet SCII (Safety Class II) and IEC 61730
requirements.
SunPower recommends a conservative minimum cable bend radius of
equal to or greater than 40mm, to avoid exposure of electrical
connections to direct sunlight and not to place connector in location
where water could easily accumulate.
4.1 System & Equipment Grounding
Please refer to the applicable regional and local codes on grounding
PV arrays and mounting frames for specific requirements (e.g.
lightning protection).
Module Types
SPR E, X , P series modules and our Maxeon and Performance Product Line
are compatible with Transformer Less (TL) inverters, when used as an
ungrounded PV source.
No frame grounding requirements (including functional frame grounding),
but may be subjected to local regulation.
Functional system grounding of a polarity (positive or negative) is optional
and may be subject to local requirements
E Series:
SPR‐Eyy‐zz SPR‐Eyy‐zzz‐BLK SPR‐Eyy‐zzz‐COM
X Series:
SPR‐Xyy‐zzz SPR‐Xyy‐zzz‐BLK SPR‐Xyy‐zzz‐COM
P Series/ Performance Product Line:
SPR‐Pyy‐zzz‐COM SPR‐Pyy‐zzz SPR‐Pyy‐zzz‐BLK SPR‐P3‐zzz‐COM
SPR‐P3‐zzz SPR‐P3‐zzz‐BLK
Maxeon Product Line:
SPR‐MAX2‐zzz SPR‐MAX2‐zzz‐COM SPR‐MAX3‐zzz SPR‐MAX3‐zzz‐
BLK SPR‐MAX3‐zzz‐COM
Note: If you are installing an older Module Type than above
mentioned, please refer to different/previous applicable Safety and
Installation Manual.
If you are doing a frame grounding connection, avoid the direct
contact between Aluminum and Copper using an intermediate metal
like steel or tin.
4.2 Series Connection
The modules may be wired in series to produce the desired voltage
output. Do not exceed the maximum system voltage specified in
module datasheet.
4.3 Parallel Connection
The modules may be combined in parallel to produce the desired
current output. Series string must be fused prior to combining with
other strings if the resulting maximum reverse current exceeds the
fuse rating as shown in the datasheets. Bypass diodes are factory
installed in the modules. Please refer to the applicable regional and
local codes for additional fusing requirements and limitations on the
maximum number of modules in parallel.
©November 2019 SunPower Corporation. All rights reserved. Specifications included in this manual are subject to change without notice.
2
. The
Safety and Installation Instructions ‐ Document 001‐15497 Rev S
5.0
Module Mounting
The SunPower Limited Warranty for PV Modules is contingent upon
modules being mounted in accordance with the requirements
described in this section.
5.1 Site Considerations
SunPower modules should be mounted in locations that meet the
following requirements:
Operating Temperature: All SunPower modules must be mounted in
environments that ensure SunPower modules will operate within the
following maximum and minimum operating temperatures:
Maximum Operating
Temperature
Minimum Operating
Temperature
Care should be taken to provide adequate ventilation behind the
modules, especially in hot environments.
Design Strength: SunPower modules are designed to meet a positive
or negative (upward and downward, e.g. wind) withstanding test
pressure load and a negative (or downward, e.g. static load or snow
load) withstanding test pressure load, as per IEC 61215, when
mounted in the configurations specified in Section 5.2 and Tables 1.2
or 1.3 below.
When mounting modules in snow prone or high wind environments,
special care should be taken to mount the modules in a manner that
provides sufficient design strength while meeting local code
requirements.
Additional authorized Operating Environments:
Modules can be mounted in the following aggressive environment
according to the test limits mentioned below
Salt mist corrosion testing: IEC 61701 Severity 6
Ammonia Corrosion Resistance: IEC 62716 Concentration: 6,667ppm
Excluded Operating Environments:
Certain operating environments are not recommended for specific
SunPower modules and are excluded from the SunPower Limited
Warranty for these modules.
No SunPower module should be mounted at a site where it may be
subject to direct contact with salt water, or other aggressive
environment.
Modules should not be installed near flammable liquids, gases, or
locations with hazardous materials; or moving vehicules of any type.
Performance Series Mounting Orientation
Performance Series (P‐Series) modules are designed to be installed in
landscape orientation. In landscape orientation, P‐series modules
maintain higher power under row to row shading and edge soiling.
5.2 Mounting Configurations
Mounting system must provide a flat plane for the modules to be
mounted on and must not cause any twist or stress to be placed on
the Module, even in case of thermal expension.
Modules may be mounted at any angle from horizontal to vertical.
Select the appropriate orientation to maximize sunlight exposure.
SunPower recommends for a good performance of the system
(reduction of soiling effect) a minimum of 5˚ tilt angle. The cleaning
frequency must be increased for modules installed with a very low
angle.
SUNPOWER CORPORATION
+85 °C (+185 °F)
‐40 °C (‐40 °F)