SunPower SPR-E20-327-COM User Manual

Safety and Installation Instructions
United States and Canada
This document applies to all SunPower modules
listed in Table 1.
Contents of this manual are subject to change without notice.
For the latest US & Canada manual please refer to www.sunpower.com/PVInstallGuideUS
SunPower Corporation
www.sunpower.com
For the latest for Europe, Asia, Australia, Latin America and Africa manual please refer to
www.sunpower.com/PVInstallGuideIEC
For the latest US & Canada technical specifications please refer to
www.sunpower.com/PVResidentialSTS (for residential modules)
www.sunpower.com/PVCommericalSTS (for commercial and utility modules)
Document 001-14158 Rev AG
P/N 100345
P/N 518350
This document includes references to SunPower E-Series, X-Series, P-Series, A-
Series, MAX2, MAX3 and NE modules. These modules do not have grounding
restrictions and all are compatible with high-efficiency transformerless
inverters.

SunPower SPR-E20-327-COM Specifications

General

Brand	SunPower
Model	SPR-E20-327-COM
Category	Inverter
Language	English

Summary

Introduction to SunPower PV Modules

Important Safety Notice

Crucial instructions to read before installation to avoid invalidating the warranty and ensure safety.

Underwriters Laboratories (UL) Listing Information

Safety Precautions for PV Module Installation

Critical Electrical Hazards

Warning about DC current, arcing, and potential injury or death from improper connections.

General Safety Guidelines

Precautions for handling, installation, and module protection to prevent damage and hazards.

Electrical Characteristics and Configuration

Module Electrical Specifications

Details on rated electrical characteristics under Standard Test Conditions (STC).

Voltage and Current Derating Factors

Guidance on multiplying STC values by 1.25 for system design and safety factors.

Electrical Connections and System Monitoring

Series and Parallel Connection Basics

Equipment Grounding Procedures

Grounding Requirements and Recommendations

Overview of grounding needs, UL standards, and recommendations for preventing corrosion.

Grounding Method 1: Lay-in Lug

Detailed instructions for using lay-in lugs, stainless steel hardware, and proper torquing.

Grounding Method 2: IFF Clips

Instructions for grounding using SunPower IFF clips, including torque values and NEC compliance.

Module Mounting Configurations and Load Ratings

Site Considerations for Module Mounting

Module Mounting Locations

Module Mounting Methods and Handling

General Mounting Configurations

Module Mounting Options

Module Handling Precautions

Instructions for safe handling of modules, avoiding contact with glass and using gloves.