This publication describes graphic symbols used to represent electrical wiring and equpment on construction drawings. In this publication, the term “electrical” is used to include electrical, electronic, and communications systems covered by the National Electrical Code (NFPA 70). This publication also summarizes recommended drawing practices for electrical construction drawings.
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NECA 100-2013
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Symbols for Electrical Construction Drawings
National Electrical Contractors Association , 2013
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