NEMA - ANSI C12.20
Electricity Meters 0.1, 0.2 and 0.5 Accuracy Classes
|Publication Date:||1 January 2015|
This standard establishes the physical aspects and acceptable performance criteria for 0.1, 0.2, and 0.5 accuracy class electricity meters meeting Blondel's Theorem. Where differences exist between the requirements of this standard and the most current version of ANSI C12.1 and ANSI C12.10, the requirements of this standard shall prevail.