Table of Contents
Read This First .........................................................................................................................3
IMPORTANT SAFETY INSTRUCTIONS.............................................................................................................4
Safety Message Types...................................................................................................................................4
General Safety...............................................................................................................................................5
Disclaimer of Liability....................................................................................................................................6
Chapter 1: Product Overview .......................................................................................... 9
Dimensional Drawings ...........................................................................................................10
Physical Overview..................................................................................................................11
Bar Code Label.......................................................................................................................11
Specifications.........................................................................................................................12
20A Output Models.....................................................................................................................................12
16A Output Models.....................................................................................................................................13
12A Output Models.....................................................................................................................................14
Chapter 2: Planning Installation..................................................................................... 15
Overview...............................................................................................................................15
Input Criteria .........................................................................................................................15
Acceptable Input Configurations ................................................................................................................15
Acceptable Input Configurations Between Parallel Optimizers..................................................................15
PV System Configurations ......................................................................................................16
Ungrounded PV Systems.............................................................................................................................16
Resistively Grounded PV Systems (positive or negative)............................................................................16
Fuse Sizes ....................................................................................................................................................16
DC-coupled Storage ....................................................................................................................................17
Inter-row Shading Wiring Example .............................................................................................................17
Output Connector Polarity .....................................................................................................18
Chapter 3: Installing the Ampt String Optimizer............................................................. 19
Getting Started ......................................................................................................................19
Parts and Tools Needed ..............................................................................................................................19
Mounting and Grounding the String Optimizer .......................................................................20
Steps............................................................................................................................................................20
Making Electrical Connections................................................................................................21
Connecting the Inputs.................................................................................................................................22
Connecting the Output ...............................................................................................................................25
Uninstalling an Optimizer.......................................................................................................26
Parts and Tools Needed ..............................................................................................................................26
Steps............................................................................................................................................................27
