ANSI C12.20-2015 establishes acceptable performance criteria for electricity meters. Revision includes addition of a 0.1% accuracy class.
ANSI C12.20-2015 History
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ANSI C78.375A-2014 (R2020)
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ANSI C12.7-2014
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ANSI C78.901-2014
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ANSI O5.1-2017
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