SolarEdge UL1741-SA User manual

Installation Guide
Single Phase Inverter with HD-
Wave Technology
with SetApp Configuration
For North America
Version 1.4

Disclaimers
Important Notice
Copyright © SolarEdge Inc. All rights reserved.
No part of this document may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photographic,
magnetic or otherwise, without the prior written permission of SolarEdge Inc.
The material furnished in this document is believed to be accurate and reliable.
However, SolarEdge assumes no responsibility for the use of this material. SolarEdge
reserves the right to make changes to the material at any time and without notice. You
may refer to the SolarEdge web site (https://www.solaredge.com/us/) for the most
updated version.
All company and brand products and service names are trademarks or registered
trademarks of their respective holders.
Patent marking notice: see https://www.solaredge.com/us/patent
The general terms and conditions of delivery of SolarEdge shall apply.
The content of these documents is continually reviewed and amended, where
necessary. However, discrepancies cannot be excluded. No guarantee is made for the
completeness of these documents.
The images contained in this document are for illustrative purposes only and may vary
depending on product models.
Disclaimers 1
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, you are encouraged to try to correct
the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for
compliance may void the user’s authority to operate the equipment.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
2FCC Compliance

Revision History
Version 1.4 (August 2020)
Updated the communication board TCPdetails in Creating an Ethernet (LAN)
Connection on page 53.
Changed the cable type required for the RS485 and Ethernet connection to CAT6.
Added the requirement for a special bracket, when installing close to the shoreline
in Mounting the Inverter on page 32
Added a requirement to minimize the distance between the positive and negative
DC optimizer cables in Step 3: Connecting Power Optimizers in Strings on page 23.
Version 1.3 (June 2020)
Updated the Optimizer Installation Guidelines.
Updated Activating, Commissioning and Configuring the System.
Revision History 3
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

Contents
Disclaimers 1
Important Notice 1
FCC Compliance 2
Revision History 3
HANDLING AND SAFETY INSTRUCTIONS 6
Safety Symbols Information 6
IMPORTANTSAFETYINSTRUCTIONS 7
Chapter 1: Introducing the SolarEdge Power Harvesting System 11
Power Optimizer 11
SolarEdge Inverter 12
Monitoring Platform 12
Supported ACGrids 12
Installation Procedure 13
Installation Equipment List 13
Inverter Transport and Storage 14
Chapter 2: Installing the Power Optimizers 15
Safety 15
Package Contents 17
Installation Guidelines 18
Step 1: Mounting and Grounding the Power Optimizers 20
Step 2: Connecting a PV module to a Power Optimizer 23
Step 3: Connecting Power Optimizers in Strings 23
Step 4: Verifying Proper Power Optimizer Connection 24
Chapter 3: Installing the Inverter 26
Inverter Package Contents 26
Identifying the Inverter 26
Inverter Interfaces 27
Opening Conduit Drill Guides 30
Mounting the Inverter 32
Chapter 4: Connecting the AC and the Strings to the Safety Switch 36
Grid Connection Guidelines 37
Connecting the AC Grid to the Safety Switch 37
Connecting the Strings to the Safety Switch 38
Chapter 5: Activating, Commissioning and Configuring the System 40
Step 1: Activating the Installation 40
Step 2: Commissioning and Configuring the Installation 41
Step 3: Verifying Proper Activation and Commissioning 43
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
4Revision History

Reporting and Monitoring Installation Data 43
Designer 45
Mapper Application 45
Physical Layout Editor 45
Using a Paper Template 46
Chapter 6: Setting Up Communication to the Monitoring Platform 47
Communication Options 47
Communication Connectors 49
Removing the Inverter Cover 51
Removing the DC Safety Unit Cover (if applicable) 51
Creating an Ethernet (LAN) Connection 53
Creating an RS485 Bus Connection 56
RS485 Bus Configuration 60
Verifying the Connection 60
Appendix A: Errors and Troubleshooting 62
Identifying Errors 62
Troubleshooting Communication 63
Power Optimizer Troubleshooting 65
Appendix B: Mechanical Specifications 67
Appendix C: Replacing and Adding System Components 68
Replacing an Inverter 68
Replacing the Safety Switch 70
Adding, Removing, or Replacing Power Optimizers 71
Technical Specifications - Single Phase Inverters with HD-Wave Technology
(North America) 73
Recommended OCPD Size per Grid 78
Default Trip Limits and Times According to IEEE1547 79
Support Contact Information 80
Revision History 5
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

HANDLING AND SAFETY INSTRUCTIONS
During installation, testing and inspection, adherence to all the handling and safety
instructions is mandatory. Failure to do so may result in injury or loss of life and
damage to the equipment.
Safety Symbols Information
The following safety symbols are used in this document. Familiarize yourself with the
symbols and their meaning before installing or operating the system.
WARNING!
Denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in injury or loss of life. Do not proceed
beyond a warning note until the indicated conditions are fully understood and
met.
AVERTISSEMENT!
Dénote un risque: il attire l'attention sur une opération qui, si elle n'est pas faite
ou suivi correctement, pourrait causer des blessures ou un danger de mort. Ne
pas dépasser une telle note avant que les conditions requises soient
totallement comprises et accomplies.
CAUTION!
Denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in damage or destruction of the
product. Do not proceed beyond a caution sign until the indicated conditions
are fully understood and met.
ATTENTION!
Dénote un risque: il attire l'attention sur une opération qui, si elle n'est pas faite
ou suivi correctement, pourrait causer un dommage ou destruction de
l'équipement. Ne pas dépasser une telle note avant que les conditions requises
soient totallement comprises et accomplies.
NOTE
Denotes additional information about the current subject.
IMPORTANTSAFETYFEATURE
Denotes information about safety issues.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
6HANDLING AND SAFETY INSTRUCTIONS

IMPORTANTSAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS
CONSIGNES DE SÉCURITÉ IMPORTANTES
CONSERVEZ CES INSTRUCTIONS
WARNING!
The inverter cover must be opened only after switching the inverter ON/OFF/P
switch located at the bottom of the inverter to OFF. This disables the DC voltage
inside the inverter. Wait five minutes before opening the cover. Otherwise, there
is a risk of electric shock from energy stored in the capacitors.
AVERTISSEMENT!
Ne pas ouvrir le couvercle de l'onduleur avant d'avoir coupé l'interrupteur situé
en dessous de l'onduleur. Cela supprime les tensions CC et CA de l'onduleur.
Attendre cinq minutes avant d’ouvrir le couvercle. Sinon, il y a un risque de
choc électrique provenant de l'énergie stockée dans le condensateur.
WARNING!
Before operating the inverter, ensure that the inverter is grounded properly. This
product must be connected to a grounded, metal, permanent wiring system, or
an equipment-grounding conductor must be run with the circuit conductors
and connected to the equipment grounding terminal or lead on the product.
AVERTISSEMENT!
Avant d'utiliser l'onduleur monophasé, assurez-vous que l'onduleur est
correctement mis à la terre. Ce produit doit être raccordé à un système de
câblage fixe, métallique, l'équipement-le conducteur de mise à la terre doit être
exécuté avec les conducteurs de circuit et raccordé à l'équipement borne de
mise à la terre ou de plomb sur le produit.
WARNING!
Opening the inverter and repairing or testing under power must be performed
only by qualified service personnel familiar with this inverter.
AVERTISSEMENT!
L’unité ne doit être ouverte que par un technicien qualifié dans le cadre de
l'installation et de la maintenance.
IMPORTANTSAFETYINSTRUCTIONS 7
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

WARNING!
The Safety Switch meets all requirements for a code-compliant installation of
this system. The DC Disconnect Switch disconnects both the positive and
negative conductors.
AVERTISSEMENT!
Le sectionneur externe (inclus) repond aux exigences de conformité pour
l’installation de ce système . Le coupeur CC ouvre les conducteurs positifs et
négatifs.
WARNING!
The inverter input and output circuits are isolated from the enclosure. This
system does not include an isolation transformer and should be installed with
an ungrounded PV array in accordance with the requirements of NEC Articles
690.35 and 690.43 National Electric Code, ANSI/NFPA 70, 2011 (and Canadian
Electrical Code, Part I, for installations in Canada).
Equipment grounding is the responsibility of the installer and must be
performed in accordance with all applicable Local and National Codes.
AVERTISSEMENT!
Les circuits d’entrée et de sortie de l’onduleur sont isolés de l’enveloppe. Ce
système n’inclut pas d’isolation galvanique (transformateur) et devra être
installé sans mise à la terre du champ PV et en accord avec les articles 690.35 et
690.43 du National Electric Code (NEC), ANSI/NFPA 70, 2011 (et du Code
Electrique Canadien, Partie 1, pour les installations faites au Canada).
La mise à la terre des équipements est la responsabilité de l’installateur et doit
être faite en accord avec les toutes les règles locales et nationales applicables.
WARNING!
The inverter must be connected to a dedicated AC branch circuit with a
maximum Overcurrent Protection Device (OCPD) of 50A.
The SE10000H-US and SE11400H-US must be connected to a dedicated AC
branch circuit with a maximum Overcurrent Protection Device (OCPD) of 80A.
AVERTISSEMENT!
Les onduleurs doivent être connectés à un branchement AC dédié avec un
disjoncteur de 50A.
Les onduleurs SE10000H-US et SE11400H-US doivent être connectés à un
branchement AC dédié avec un disjoncteur de 80A
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
8IMPORTANTSAFETYINSTRUCTIONS

WARNING!
SolarEdge products can expose you to chemicals including antimony trioxide,
which is known to the State of California to cause cancer. For more information,
go to www.P65Warnings.ca.gov .
AVERTISSEMENT!
Les produits SolarEdge peut vous exposer à des agents chimiques, y compris
trioxyde d'antimoine, identifiés par l'État de Californie comme pouvant causer le
cancer. Pour de plus amples informations, prière de consulter
www.P65Warnings.ca.gov.
CAUTION!
This unit must be operated according to the technical specification datasheet
provided with the unit.
ATTENTION!
Cette unité doit être utilisée selon les spécifications de fonctionnement, comme
décrit dans la dernière fiche technique des spécifications.
CAUTION!
HEAVY OBJECT. To avoid muscle strain or back injury, use proper lifting
techniques, and if required - a lifting aid.
ATTENTION!
Objet lourd. Pour éviter la fatigue musculaire ou des blessures au dos, utilisez
des techniques de levage appropriées et, si nécessaire - un auxiliaire de levage
lors du retrait.
NOTE
Use only copper conductors rated for a minimum of 75°C/ 167°F.
NOTE
This inverter is provided with an IMI (Isolation Monitor Interrupter) for ground
fault protection.
NOTE
The symbol appears at grounding points on the SolarEdge equipment. This
symbol is also used in this manual.
IMPORTANTSAFETYINSTRUCTIONS 9
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

NOTE
A SolarEdge inverter may be installed in a site with a generator. SolarEdge
requires installing a physical or electronic interlock, which will signal to the
inverter when the grid has been disconnected. Interlock procurement,
installation, maintenance and support are the responsibility of the installer.
Damage to the inverter due to incorrect interlock installation or use of an
interlock that is incompatible with the SolarEdge system will render the
SolarEdge warranty invalid.
For more information, refer to
https://www.solaredge.com/sites/default/files/se-inverter-
support-of-voltage-sources.pdf.
IMPORTANT SAFETY INFORMATION
To perform Rapid Shutdown, shut down AC power to the inverter. This can be
done by turning off the AC breaker in the main service panel, which is an
approved AC disconnect as described in the NEC.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
10 IMPORTANTSAFETYINSTRUCTIONS

Chapter 1: Introducing the SolarEdge Power
Harvesting System
The SolarEdge power harvesting solution maximizes the power output from any type of
solar photovoltaic (PV) installation while reducing the average cost per watt. The
following sections describe each of the system’s components.
Figure 1: The SolarEdge power harvesting system components
Power Optimizer
The power optimizers are DC-DC converters connected to PV modules in order to
maximize power harvesting by performing independent Maximum Power Point
Tracking (MPPT) at the module level.
The power optimizers regulate the string voltage at a constant level, regardless of string
length and environmental conditions.
The power optimizers include a safety voltage function that automatically reduces the
output of each power optimizer to 1 Vdc in the following cases:
During fault conditions
The power optimizers are disconnected from the inverter
The inverter ON/OFF/P switch is turned OFF
The inverter AC breaker is turned OFF
The Rapid Shutdown (PVRSS)is initiated by one of the following methods:
Inverter AC breaker is turned OFF, or AC to the inverter is disconnected by
another method (intentionally or as result of a fault)
Inverter ON/OFF/P switch is turned OFF
The Safety Switch is turned OFF
Chapter 1: Introducing the SolarEdge Power Harvesting System 11
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

Each power optimizer also transmits module performance data over the DC power line
to the inverter.
Two types of power optimizers are available:
module add-on power optimizer – connected to one or more modules
smart modules - the power optimizer is embedded into a module
SolarEdge Inverter
The SolarEdge inverter efficiently converts DC power from the modules into AC power
that can be fed into the main ACservice of the site and from there to the grid. The
inverter also receives the monitoring data from each power optimizer and transmits it to
a central server (the SolarEdge monitoring platform; requires Internet connection).
Monitoring Platform
The monitoring platform enables monitoring the technical and financial performance of
one or more SolarEdge sites. It provides past and present information on the system
performance both at the system and module levels.
Supported ACGrids
The following figures illustrate grids that are supported by SolarEdge single phase
inverters. Refer to Setting Country, Grid and Language on page 41 ).
Ground connection is required for all grids, as described in Connecting the AC Grid to
the Safety Switch on page 37.
Note that in some cases L1 and L2 are not interchangeable. In these places, L1 and L2
locations appear in the drawing.
Figure 2: 240V AC grids supported by SolarEdge single phase inverter
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
12 SolarEdge Inverter

Figure 3: 208V AC grids supported by SolarEdge single phase inverter(1)
Installation Procedure
The following is the procedure for installing and setting up a new SolarEdge site. Many
of these also apply to modification of an existing site.
1. Connecting Power Optimizers in Strings, page 23
2. Recording power optimizer serial numbers (optional), page 44
3. Mounting the inverter, Page 32
4. Connecting the AC and the String to the DCSafety Unit, page 36
5. Commissioning and activating the installation, page 40
6. Connecting the inverter to the monitoring platform, page 45
Installation Equipment List
Standard tools can be used during the installation of the SolarEdge system. The
following is a recommendation of the equipment needed for installation:
Allen screwdriver for 4 mm screw type for the inverter cover, side screws, and Safety
Switch cover
Standard flat-head screwdrivers set
Non-contact voltage detector
Cordless drill (with a torque clutch)or screwdriver and bits suitable for the surface
on which the inverter and optimizers will be installed and for opening the Safety
Switch drill guides. Use of an impact driver is not allowed.
(1)208V AC grids are only supported by some inverter models. Refer to the specification supplied with the
inverter.
Chapter 1: Introducing the SolarEdge Power Harvesting System 13
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

Appropriate mounting hardware (for example: stainless bolts, nuts, and washers) for
attaching:
the inverter mounting bracket to the mounting surface
the power optimizer to the racking (not required for smart modules)
Wire cutters
Wire strippers
Voltmeter
Mobile phone with latest SetApp version
For installing the communication options, you may also need the following:
For Ethernet:
CAT6 twisted pair Ethernet cable with RJ45 connector
If using a CAT6 cable spool: RJ45 plug and RJ45 crimper
For RS485:
Four- or six-wire shielded twisted pair cable
Watchmaker precision screwdriver set
Inverter Transport and Storage
Transport the inverter in its original packaging, facing up and without exposing it to
unnecessary shocks. If the original package is no longer available, use a similar box that
can withstand the weight of the inverter (refer to the inverter weight in the specification
datasheet provided with the unit), has a handle system and can be closed fully.
Store the inverter in a dry place where ambient temperatures are -13°F to 140°F /
-25°C to +60°C.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
14 Inverter Transport and Storage

Chapter 2: Installing the Power Optimizers
Safety
The following notes and warnings apply when installing the power optimizers. Some of
the following may not be applicable to smart modules:
WARNING!
The metallic enclosure of the power optimizer must be grounded in accordance
with the product's listing and local and national codes.
AVERTISSEMENT!
L'enceinte métallique de l’optimiseur de puissance doit être mise à la terre en
accord avec les régulations locales et nationales.
WARNING!
When modifying an existing installation, turn OFF the inverter ON/OFF/P
switch, the DC Safety Unit and the AC circuit breaker on the main AC
distribution panel.
AVERTISSEMENT!
Avant de faire ces étapes, éteignez l'onduleur monophasé en mettant sur OFF
l'interrupteur ON/OFF/P situé au bas de l'onduleur.
CAUTION!
Power optimizers are IP68/NEMA6P rated. Choose a mounting location where
optimizers will not be submerged in water.
ATTENTION!
Les optimiseurs de puissances sont compatibles à la norme IP68/NEMA6P.
Choisissez le lieu de montage tel que l’optimiseur ne puisse pas être submergé
par l’eau.
CAUTION!
This unit must be operated according to the operating specifications provided
with the unit.
ATTENTION!
Cette unité doit être opérée suivant les instructions trouvées dans le manuel
fourni avec le produit.
CAUTION!
Cutting the power optimizer input or output cable connector is prohibited and
will void the warranty.
ATTENTION!
Sectionner les cables d’entrées ou de sortie de l’optimiseur est interdit et annule
sa garantie.
Chapter 2: Installing the Power Optimizers 15
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

CAUTION!
All PV modules must be connected to a power optimizer.
ATTENTION!
Tous les modules doivent être connectés à un optimiseur de puissance.
CAUTION!
If you intend to mount the optimizers directly to the module or module frame,
first consult the module manufacturer for guidance regarding the mounting
location and the impact, if any, on module warranty. Drilling holes in the
module frame should be done according to the module manufacturer
instructions.
ATTENTION!
Pour installation à même le module ou la monture du module, consultez
d'abord le fabricant du module sur la position et son impact sur la garantie du
module. Le perçage de trous dans le cadre du module devra se faire suivant les
instructions du fabricant.
CAUTION!
Installing a SolarEdge system without ensuring compatibility of the module
connectors with the optimizer connectors may be unsafe and could cause
functionality problems such as ground faults, resulting in inverter shut down. To
ensure mechanical compatibility of the power optimizers’ connectors with the PV
module’ connectors to which they are connected:
Use identical connectors from the same manufacturer and of the same type
on both the power optimizers and on the modules; or
Verify that the connectors are compatible in the following way:
The module connector manufacturer should explicitly verify compatibility
with the SolarEdge optimizer connector; and
A third-party test report by one of the listed external labs (TUV, VDE,
Bureau Veritas UL, CSA, InterTek) should be obtained, verifying the
compatibility of the connectors.
For more information, refer to
https://www.solaredge.com/sites/default/files/optimizer-input-
connector-compatibility.pdf
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
16 Safety

ATTENTION!
Les connecteurs du module doivent être mécaniquement compatibles avec les
optimiseurs de puissance. Sinon, le système SolarEdge installé peut être
dangereux ou causer des problèmes fonctionnels, tels que les défauts de terre,
qui peuvent provoquer un arrêt de l’onduleur. Afin d'assurer la compatibilité
mécanique entre les optimiseurs de puissance SolarEdge et les modules auxquels
ils sont connectés:
Utiliser des connecteurs identiques du même fabricant et du même type aussi
bien pour les optimiseurs de puissance que pour les modules.
Vérifiez que les connecteurs sont compatibles de la manière suivante:
Le fabricant du connecteur doit explicitement vérifier la compatibilité avec
le connecteur SolarEdge.
Un rapport de test de tierce partie doit être effectué par l’un des
laboratoires externes indiqués ci-dessous:(TUV, VDE, Bureau Veritas UL,
CSA,Intertek), qui vérifiera la compatibilité des connecteurs.
Pour plus d’informations, consultez
https://www.solaredge.com/sites/default/files/optimizer-input-
connector-compatibility.pdf
IMPORTANTSAFETYFEATURE
Modules with SolarEdge power optimizers are safe. They carry only a low safety
voltage before the inverter is turned ON. As long as the power optimizers are
not connected to the inverter or the inverter is turned OFF, each power
optimizer will output a safe voltage of 1V.
Package Contents
Power optimizers
Stainless steel grounding lock washers
Chapter 2: Installing the Power Optimizers 17
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4

Installation Guidelines
For the minimum and maximum number of power optimizers in a string (string
length), see the power optimizer datasheets. Refer to the Designer for string length
verification. The Designer is available on the SolarEdge website at:
https://www.solaredge.com/us/products/installer-tools/designer#/.
The length of home-run cables from the first and last power optimizer to the inverter
(total cable length) may not exceed the following values:
Single Phase Inverters Three Phase Inverters
All - 1000 ft. /300 m
SE9KUS, SE20KUS - 1000 ft. /300 m
SE14.4KUS, SE17.3KUS, SE33.3KUS,
SE40KUS - 2300 ft. /700 m
Do not use extension cables between a module and a power optimizer, between two
modules connected to the same power optimizer, or between two power optimizers
other than in the following cases:
Between a power optimizer and a module:
Power optimizers with the 4-type suffix in their part number (Pxxx-4xxxxxx) -
extension cables of up to 16 m can be installed per power optimizer (8 m for DC+
and 8 m for DC-).
Power optimizers manufactured starting from working week 42, 2019, as
indicated in the serial number (Example:S/N SJ5019A-xxxxxxxx - working week
50, 2019) - extension cables of up to 16 m can be installed per power optimizer (8
m for DC+ and 8 m for DC-).
Between two power optimizers or between a power optimizer and the inverter:
Extension cables can be installed between power optimizers only from row to
row, around obstacles or pathways within a row, and from the end of the string
to the inverter, as long as the total cable length is not exceeded.
For connecting power optimizers to the inverter, use cables with a minimum cross-
section of 11 AWG/ 4 mm² DC cables.
Frame-mounted power optimizers are mounted directly on the module
frame, regardless of racking system (rail-less or with rails). For
installation of frame-mounted power optimizers, refer to
http://www.solaredge.com/sites/default/files/installing_frame_
mounted_power_optimizers.pdf.
The power optimizer can be placed in any orientation.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4
18 Installation Guidelines

If connecting more modules than power optimizer inputs in parallel, use a branch
cable. Some commercial power optimizer models have a dual input.
Position the power optimizer close enough to its module so that their cables can be
connected.
Make sure to use power optimizers that have the required output conductor length.
Completely shaded modules may cause their power optimizers to temporarily shut
down. This will not affect the performance of the other power optimizers in the
string, as long as the minimum number of unshaded power optimizers connected in
a string of modules is met. If under typical conditions fewer than the minimum
power optimizers are connected to unshaded modules, add more power optimizers
to the string.
Equipment grounding tightening torques: 4-6 AWG: 45 lb-in, 8 AWG: 40 lb-in, 10-14
AWG: 35 lb-in.
To allow for heat dissipation, maintain clearance as specified below.
Figure 4: Power optimizer clearance
When installing modules in a confined space, for example, if installing Building-
integrated photovoltaic (BIPV) modules, ventilation measures may be needed to
ensure the power optimizers are not be exposed to temperatures outside their
specifications.
Chapter 2: Installing the Power Optimizers 19
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00541-1.4