Transcription of NEC Code Calculations for Solar Installations - iccsafe.org
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NEC Code Calculations for Solar Installations - iccsafe.org
For Inspectors and Building OfficialsNEC code Calculations for Solar Installations Cari Williamette works with EcoVisionElectric in Minneapolis, MN performing 3rd party testing and installation of Solar PV systems. She is a licensed master electrician, and an ICC certified electrical inspector and building official. When not in the field, she teaches classes in code Calculations , code update, and Article 690 ( Solar PV).About Cari WilliametteSolar Photovoltaic What is it? How does it work? Basic termsSolar Photovoltaic System (PV) The total components and subsystems that, in combination, convert Solar energy into electric energy suitable for connection to a utilization load. (NEC ) Solar Cell The basic photovoltaic device that generates electricity when exposed to light. (NEC ) Solar CellPV Cell ComparisonThere are four main different types of Solar PV cells.
Feb 21, 2012 · Using 13 modules per string (in series) Using Table 690.7 36.9 volts X 1.18 = 43.54 volts 43.54 X 13 = 566.02 volts Using Manufacturer’s Info 25 –(-16) = 41 deg. C 41 X .36% = 14.76 % (increase by 14.76%) 36.9 volts X 1.1476 = 42.35 volts 42.35 X 13 = 550.55 volts NE prefers to use manufacturer’s info when possible See 690.7(A), second ...
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