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Federal Register / Vol. 86, No. 143 / Thursday, July 29, 2021 / Rules and Regulations
Administration Act of 1974, as amended by the Federal Energy Administration Authorization Act of 1977 15 U.S.C.
788; FEAA. NEMA and PHTA, No. 57
at p. 4
As noted by commenters, UL 100410
was ANSI approved on January 23, 2020
and the latest standard is UL 1004
10:2020 Standard for Safety for Pool Pump Motors edition date February 28, 2020. DOE reviewed UL 1004
10:2020 and only identified minor editorial updates compared to UL 1004
10:2019 See UL 100410:2020 sec 1.1, 2.1, 3.1, and 3.2 and did not identify any updates to the definitions.
Therefore, in this final rule, DOE
incorporates by reference UL 1004
10:2020 see section III.D.3 and references the definitions published in that industry standard.
In the October 2020 NOPR, DOE also proposed to rely on the term manufacturers model number, as currently defined in 10 CFR 431.2, as the identifier used by a manufacturer to uniquely identify the group of identical or essentially identical commercial equipment to which a particular unit belongs and which is generally applicable to commercial equipment. 85
FR 62816, 62822. The manufacturers model number typically appears on equipment nameplates, in equipment catalogs and in other product advertising literature. 10 CFR 431.2.
DOE proposed to require manufacturers to report to DOE the models in current production according to the manufacturers model number to which the labeling requirement applies. 85 FR
62816, 62822. DOE requested comment on the proposed use of the term manufacturers model number as defined at 10 CFR 431.2 for the purpose of reporting to DOE. Id.
NEMA and PHTA commented that a manufacturers unique identifier is needed. NEMA and PHTA
recommended that a catalog or model number be used to describe and track subject DPPP motors throughout the rules requirements, as using the catalog or model number would significantly reduce the need for updates to the DOE
database. NEMA and PHTA, No. 57 at p. 5 DOE did not receive any other comments regarding using the term manufacturers model number.
DOE proposed a definition of manufacturers model number in the context of the proposed reporting required in conjunction with the proposed labeling requirement. As DOE
is not adopting a labeling requirement in this final rule, DOE is not adopting the use of the term manufacturers model number in this final rule.

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C. Test Procedures As discussed in section I.A.1, EPCA
provides for the establishment of a test procedure for covered equipment. 42
U.S.C. 6314a The test procedure must be reasonably designed to produce results reflecting the energy efficiency, energy use, and estimated operating costs of the covered equipment and not be unduly burdensome to conduct. 42
U.S.C. 6314a2 While EPCA includes specific test procedure-related requirements for electric motors, these requirements are limited to those motors for which standards are applicable. See 42 U.S.C. 6314a5 As there are currently no energy conservation standards for DPPP motors, these specific requirements do not apply.
In the October 2020 NOPR, consistent with the statutory framework, DOE
proposed to incorporate by reference CSA C74709 R2014 published October 1, 2009 and reaffirmed in 2014
as the prescribed test method for evaluating the energy efficiency of the pool pump motors in scope. 85 FR
62816, 62822. This industry-based test procedure, which is already prescribed by DOE as an alternative testing method for evaluating the efficiency of certain small electric motors, can be applied to the range of electric motors that are used in DPPPsincluding both single-, two-,multi-, and variable-speed DPPP
motors. CSA C74709 provides for the direct measurement of electrical input power to the motor or to the drive, as applicable 17 and mechanical output power in the form of torque and speed from the motor i.e., input-output test, and for the calculation of efficiency as the ratio of these two values at different load points. 85 FR
62816, 62822. CSA C74709 provides that the test method is applicable to motors with drives also known as inverters or converters, such as variable-speed drives see Section 1 and Section 4 of CSA C74709, and twoand multi-speed motors see Section 6.6
and 6.7.1 of CSA C74709, which is inclusive of the scope of DPPP motors.
CSA 74709 is a commonly used industry test method that is reasonably designed to produce results reflecting the energy efficiency, energy use, and estimated operating cost of DPPP motors and is not unduly burdensome to conduct.
In response to the October 2020
NOPR, CA IOUs, NEMA and PHTA
commented that CSA C74709 was the appropriate test standard for DPPP
motors and agreed with DOEs proposal 17 UL 100410:2020 defines a drive as a power converter, such as a variable-speed drive or phase converter Section 2.7 of UL 100410:2020.

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to incorporate by reference CSA C747
09. CA IOUs, No. 64 at p. 5; NEMA and PHTA, No. 57 at p. 5 DOE did not receive any comments opposed to the incorporation by reference of CSA
C74709. Accordingly, in this final rule, DOE incorporates CSA C74709 by reference at 10 CFR 431.482 as the prescribed test method for evaluating the energy efficiency of the pool pump motors in scope.
D. Metric In the October 2020 NOPR, DOE
noted that section 6.5 of CSA C74709
specifies that the motor efficiency must be measured at no fewer than five load points 18 and proposed that the energy efficiency metric for pool pump motors to be the full-load efficiency,19
consistent with current industry practice. 85 FR 62816, 62822.
The CA IOUs commented that the full-load efficiency metric would provide consumer utility when combined with the UL certification because it would indicate that the pool pump would be suitable for use or replacement in one of those products.
CA IOUs, Public Meeting Transcript, No. 55 at p. 62
NEMA and PHTA commented in support of using the full-load efficiency as determined by CSA C74709 as the metric. However, NEMA and PHTA
noted that CSA C74709 measures an efficiency that includes the losses of both the motor and the drive or control. As such, NEMA and PHTA
recommended that the metric be described as a motor system efficiency i.e., combined motor and drive efficiency and not as a motor efficiency. NEMA and PHTA, No. 57 at p. 5 CA IOUs also recommended describing the metric as a motor system efficiency. CA IOUs, No. 64 at pp. 5
6 Nidec, however, commented that fullload efficiency is not an appropriate metric for pool pump motors and asserted that it does not capture the energy saving benefits of variable-speed pool pump motors. Nidec commented that the full-load efficiency of a non-UL
100410:2020-compliant single-speed pool pump motor measured in accordance with CSA C74709 could be 18 As specified in section 6.5 of CSA C74709, the motor efficiency is measured at no fewer than five load points in total, with at least four of which being between 25% and 100% of full-load, and at least one of which being between 100% and 125%
of full-load.
19 For variable-speed motors, Section 3 of CSA
C74709 defines full-load as the rated output power at the speed specified by the manufacturer.
For all other motors, it is defined as the rated horsepower of the motor i.e. the horsepower indicated on its nameplate.

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