4 Colo. Code Regs. § 723-3-3304

Current through Register Vol. 47, No. 22, November 25, 2024

Section 4 CCR 723-3-3304 - Scheduled Meter Testing

(a) A utility shall test, or shall arrange for testing of, service meters in accordance with the schedule in this rule or in accordance with a sampling program approved by the Commission.

(b) If it wishes to use a sampling program, a utility shall file an application to request approval of a sampling program. The application shall include:

(I) the information required by paragraphs 3002(b) and 3002(c).

(II) a description of the sampling program which the utility wishes to use. This description shall include, at a minimum the following:

(A) the type(s) of meters subject to the sampling plan;

(B) the frequency of testing;

(C) the procedures to be used for the sampling;

(D) the reference standard to be used for testing; and

(E) the accuracy of the testing and of the sampling plan.

(III) An explanation of the reason(s) for the requested sampling program; and

(IV) an analysis which demonstrates that, with respect to assuring the accuracy of the service meters tested, the requested sampling program is at least as effective as the schedule in this rule.

(c) Revisions to any portion of a sampling program approved pursuant to paragraph (b) of this rule shall be accomplished by the filing of, and Commission approval of, a new application.

(d) Every service meter must be tested and adjusted, either before installation or no later than 60 days after installation, to ensure that it registers accurately and conforms to the requirements of rule 3302. In addition, every service meter shall be tested on a periodic basis, as follows.

(I) Alternating current watt-hour meters.

(A) Polyphase meters used with instrument transformers, every four years.

(B) Single-phase meters used with instrument transformers, every eight years.

(C) Self-contained polyphase meters, every six years.

(D) Self-contained single-phase meters and three wire network meters, every eight years.

(II) Direct current watt-hour meters.

(A) Up to and including 6 KW, every 42 months.

(B) Over 6 KW up to and including 100 KW, every 18 months.

(C) Over 100 KW, every 12 months.

(III) Var-hour meters and lagged demand meters shall be tested on the same schedule as the associated watt-hour meters in subparagraph (c)(I) or (II) of this rule. Integrated (block interval) demand meters, including demand registers and associated control devices, shall be tested on the same schedule as the associated watt-hour meters in subparagraph (c)(I) or (II) of this rule, but at least every six years.

(e) Each utility shall include in its tariff a description of the utility's practices concerning:

(I) testing and adjustment of service meters at installation; and

(II) periodic testing after installation.

4 CCR 723-3-3304

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