4 CCR 723-3-3302 - Service Meter Accuracy

(a) No service watt-hour meter that has an incorrect register constant, test constant, gear ratio or dial train, or that has a moving element that makes one complete revolution in ten minutes or less with all load wires disconnected, shall be placed in service or allowed to remain in service without proper adjustment and correction.

(b) No service watt-hour meter that has an error in registration of more than plus or minus two percent, either at light load or at heavy load, shall be placed in service. Whenever a meter is found to exceed these limits, it shall be adjusted or replaced.

(c) No demand meter shall have an allowable error of more than two percent of full-scale deflection, except that the allowable error for thermal type meters may be three percent. Whenever a demand meter is found to exceed these limits, it shall be adjusted or replaced.

(d) Meters used with instrument transformers or current transformers shall be adjusted or replaced so that the overall accuracy of the metering installation meets the requirements of this rule.

Notes

4 CCR 723-3-3302

38 CR 17, September 10, 2015, effective 9/30/2015 39 CR 06, March 25, 2016, effective 4/14/2016 39 CR 08, April 25, 2016, effective 5/15/2016 40 CR 22, November 25, 2017, effective 12/15/2017 42 CR 03, February 10, 2019, effective 3/2/2019 42 CR 07, April 10, 2019, effective 4/30/2019 42 CR 09, May 10, 2019, effective 5/30/2019 43 CR 08, April 25, 2020, effective 5/15/2020 43 CR 12, June 25, 2020, effective 7/15/2020 43 CR 20, October 25, 2020, effective 11/14/2020 44 CR 13, July 10, 2021, effective 7/30/2021 44 CR 24, December 25, 2021, effective 1/14/2022 45 CR 18, September 25, 2022, effective 10/15/2022 46 CR 02, January 25, 2023, effective 2/14/2023