Nabcep Study Guide

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  • Topic: Photovoltaics, Photovoltaic module, Photovoltaic array
  • Pages : 114 (40843 words )
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  • Published : April 25, 2013
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STUDY GUIDE FOR PHOTOVOLTAIC SYSTEM INSTALLERS
AND

SAMPLE EXAMINATION QUESTIONS

PREPARED FOR: U.S. DEPARTMENT OF ENERGY AND SANDIA NATIONAL LABORATORIES

REVISION FOR THE SEPTEMBER 24, 2005
PV INSTALLER CERTIFICATION EXAM FOR THE NORTH AMERICAN BOARD OF CERTIFIED ENERGY PRACTITIONERS NABCEP HTTP://WWW.NABCEP.ORG/

TABLE OF CONTENTS
1. 2. INTRODUCTION ........................................................................................................................................................ 1 REFERENCE RESOURCES AND ADDITIONAL READING MATERIALS ..................................................... 3 2.1 2.2 3. 3.1 REFERENCES: ......................................................................................................................................................... 3 ADDITIONAL READING MATERIAL:........................................................................................................................ 3

PHOTOVOLTAIC (PV) INSTALLER STUDY GUIDE .......................................................................................... 4 WORKING SAFELY WITH PHOTOVOLTAIC (PV) SYSTEMS (TASKS 1.1 THRU 1.9 OF THE NABCEP TASK ANALYSIS) 4 3.1.1 OSHA Regulations............................................................................................................................................ 4 3.1.2 Safety in Attics .................................................................................................................................................. 5 3.1.3 Working Space for Electrical Systems.............................................................................................................. 5 3.1.4 How Photovoltaic Systems Work, and Associated Safety and Testing Issues................................................... 6 3.2 CONDUCTING A SITE ASSESSMENT (TASKS 2.1 THRU 2.10 OF THE NABCEP TASK ANALYSIS)........................... 10 3.2.1 Shading........................................................................................................................................................... 10 3.2.2 Array Orientation ........................................................................................................................................... 13 3.2.3 Array Location ............................................................................................................................................... 13 3.2.4 Array Mounting Methods................................................................................................................................ 15 3.2.5 BOS Locations .................................................................................................................................................... 15 3.3 SELECTING A SYSTEM DESIGN (TASKS 3.1 THRU 3.4 OF THE NABCEP TASK ANALYSIS) ................................... 15 3.4 ADAPTING THE MECHANICAL DESIGN (TASKS 4.1 AND 4.2 OF THE NABCEP TASK ANALYSIS) ......................... 16 3.5 ADAPTING THE ELECTRICAL DESIGN (TASKS 5.1 THRU 5.8 OF THE NABCEP TASK ANALYSIS) ......................... 19 3.5.1 Wire, Fuse, Circuit Breaker, and Disconnect Sizing ...................................................................................... 20 3.5.1.1 Temperature and Conduit Fill Corrections for Ampacity of Conductors ......................................................... 20 3.5.1.2 Voltage Drop for Circuits .............................................................................................................................. 21 3.5.2 Charge Controllers and Linear Current Boosters.......................................................................................... 24 3.5.3 Batteries and Battery Wiring.......................................................................................................................... 27 3.5.4...
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