Wis. Admin. Code PSC § 113.0814
Current through May 28, 2024
All portable indicating electrical instruments used for determining quality of service to customers or for billing purposes, such as voltmeters, ammeters and watt meters, shall be checked against suitable secondary reference standards at least once in each 6 months. If the portable indicating instrument is found appreciably in error at zero or in error by more than 1% of indication at commonly used scale deflections, it shall be adjusted. A history and calibration record shall be kept for each such instrument.
Wis. Admin. Code Public Service Commission § PSC 113.0814