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Code Corner Articles
by Subject

Subject Code Corner Edition #
Ampacity 21, 22, 25, 31, 43, 44, 45, 46, 47, 48, 49, 50, 51, 54, 55, 59, 62, 66, 67, 68, 76, 77, 78, 8395
Battery Circuits 46, 48, 101, 111, 116
Checklist 58, 71, 106, 113, 115
Circuit Breakers 50, 52, 54, 68, 84, 85, 111
Conductors & Cables 16, 21, 81, 49, 51, 55, 76, 77, 78, 79, 80, 81, 82, 83, 91, 95, 96, 104, 107, 117
Conduit 20, 23, 25, 31, 44, 49, 50, 60, 62, 83, 116
Code - General 16, 20, 21, 23, 25, 33, 44, 49, 50, 55, 63, 69, 70, 71, 75, 85, 87, 88,100, 102, 105, 108, 109, 110, 118
Design 92, 95, 98, 99, 115
Disconnects 16, 19, 20, 21, 23, 25, 42, 99, 119
Diodes 60, 62, 63
Fuses 52, 54, 67, 84, 85
Grid-Tied Systems 47, 83, 89, 90, 111, 112
Grounding 18, 27, 28, 30, 34, 43, 44, 58, 64, 65, 72, 73, 74, 91, 98, 102, 103, 117
Ground Faults 58, 111,
Hybrid Systems 48
Inspectors 33, 71
Lightning 32, 57
Load Circuits 23, 95
Maintenance 71
Multi-wire Branch Circuits 54, 59
PV Modules 79, 81, 83, 91, 101, 116, 117
Resources 92, 101, 114
Stand-Alone Systems 46, 48, 98
Voltage Drop 80, 81, 83
Water Pumping 26, 45



hplogoJohn Wiles gets dozens of questions a week on PV systems and the National Electrical Code® (NEC®) from PV vendor/installers, PV manufacturers, PV systems integrators, electrical contractors, electricians, electrical inspectors, and homeowners. Many of these questions are repetitive. John uses these questions as the basis for his Code Corner articles in Home Power Magazine. Rather than rewrite the answers to the frequently asked questions, John has indexed the Code Corner articles (left column).  Each one is linked to the appropriate PDF file.

The higher the number of the Home Power edition, the more recent the publication date.   The articles cover the requirements of the 1990, 1993, 1996, and 1999 editions of the National Electrical Code.  This material represents the best available information at the time of publication (starting as early as 1990).  It should only be used with a full understanding of the NEC which is available from local electrical supply houses and the National Fire Protection Association.   Better information on good engineering practices and good workmanship appear in the later Code Corner articles.                 


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