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New Mexico State University
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Las Cruces, New Mexico 88003-8001


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  College of Engineering
 
Southwest Technology Development Institute

PV and NEC: Suggested Practices

This guide provides information on how the National Electrical Code (NEC) applies to photovoltaic systems. The guide is not intended to supplant or replace the NEC; it paraphrases the NEC where it pertains to photovoltaic systems and should be used with the full text of the NEC. Users of this guide should be thoroughly familiar with the NEC and know the engineering principles and hazards associated with electrical and photovoltaic power systems. The information in this guide is the best available at the time of publication and is believed to be technically accurate; it will be updated frequently. Application of this information and results obtained are the responsibility of the user.

This is a  publication of The Photovoltaic Systems Assistance Center, Sandia National Laboratories by John Wiles, Southwest Technology Development Institute, New Mexico State University, Las Cruces, NM.

420

PV/NEC SUGGESTED PRACTICES MANUAL DOWNLOADS:

NEW: .pdf version 1.91 (April 2010)

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1.  This is a 4.7 MB file. Photovoltaic Power Systems and the National Electrical Code: Suggested Practices

2. This is a 69.3 MB file. PV & NEC: Suggested Practices large file.

Si quiere una copia en español, oprima aquí: Sistemas de Energía Fotovoltaica y El Código Eléctrico Nacional: Prácticas Recomendadas

300The above reports are in Adobe PDF format and require an Adobe Acrobat reader. Acrobat is available for various platforms (PC, MAC, Unix, etc.) free from Adobe.

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420
PV/NEC Suggested Practices Manual, divided into parts for .pdf download.


Front Matter - title, table of contents, applicable articles in the 2005 NEC

Body - The body of this manual includes the following major topics. Click on the "Body" link to download.
Introduction
Methods
Scope & Purpose
Testing & Approval
PV Modules
Conductor Color Codes
PV Array Ground-Fault Protection
PV Array Installation and Service
Grounding
Conductor Ampacity
Overcurrent Protection
Disconnecting Means
Panelboards, enclosures, and Boxes
Batteries
Generators
Charge Controllers
Inverters
Stand-Alone Distribution Systems
AC PV Modules
System Labels and Warnings
Inspections
Insurance
Appendix A - Sources of Equipment
Appendix B - PV Module Operating Characteristics
Appendix C - Utility Interactive Systems
Appendix D - Cable and Device Ratings at High Voltages
Appendix E - Example Systems
Appendix F - DC Currents Single-Phase Stand-Alone Inverters
Appendix G - Grounding Modules
Appendix H - PV Ground-Fault Protection (NEC, Sec 690.5)
Appendix I - Selecting Overcurrent Devices & Conductors
Appendix J - Module Series Fuse Requirements - 2 parts
Appendix K - Flexible, Fine-Stranded Cables Incompatibilities
Appendix L - Ungrounded PV Systems
Appendix M - Service Entrance Conductor Taps

  ©2005 NMSU Board of Regents - Legal Information