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Federal Register / Vol. 86, No. 203 / Monday, October 25, 2021 / Rules and Regulations
at each EL for the representative equipment classes. See chapter 5 of this
final determination TSD for further details.

TABLE IV.12SUMMARY OF ELS FOR REPRESENTATIVE EQUIPMENT CLASSES
Equipment class
EL

50 W and 100 W

EL1
EL2
EL3
EL1
EL2
EL3
EL1
EL2
EL1
EL2
EL1
EL1

>100 W and <150 W
150 W and 250 W
>250 W and 500 W
>500 W and 1,000 W
>1,000 W and 2,000 W

Minimum efficiency equation for ballasts not tested at 480 V

Technology

More Efficient Magnetic
Standard Electronic
Electronic Max Tech
More Efficient Magnetic
Standard Electronic
Electronic Max Tech
More Efficient Magnetic
Electronic Max Tech
More Efficient Magnetic
Electronic Max Tech
More Efficient Magnetic
More Efficient Magnetic

1/1+1.16P0.345.
1/1+1P0.42.
1/1+0.4P0.3.
1/1+1.16P0.345.
1/1+1P0.42.
1/1+0.4P0.3.
1/1+0.507P0.263.
1/1+0.4P0.3.
1/1+0.507P0.263.
1/1+0.4P0.3.
0.000057P+0.881.
0.000008P+0.946.

P is defined as the rated wattage of the lamp the fixture is designed to operate.
For this equipment class the EL 2 specified in the August 2020 NOPD was the same as EL 3. For clarity, only an EL 2 is specified in this final determination.

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5. Scaling to Other Equipment Classes In the August 2020 NOPD, DOE did not directly analyze MHLFs with ballasts that would be tested at an input voltage of 480 V. DOE developed a scaling relationship to establish ELs for these equipment classes. Ballasts capable of operating at 120 V or 277 V
are predominantly quad-voltage ballasts, therefore, DOE chose to compare quadvoltage ballasts with 480 V ballasts to develop a scaling factor. 85 FR 47472, 4748947490.
Based on its review of the compliance certification database, DOE determined that the average reduction in ballast efficiency for 480 V ballasts compared to quad ballasts is greater for ballasts designed to operate lamps rated less than 150 W compared to ballasts designed to operate lamps rated greater than or equal to 150 W. DOE developed two separate scaling factors, one for the 50 W150 W range and the second for the 150 W1000 W range. In the August 2020 NOPD for 480 V equipment classes in the 50 W150 W range, DOE found the average reduction in ballast efficiency to be 3.0 percent, and for those in the 150 W1000 W range, DOE
found the average reduction in ballast efficiency to be 1.0 percent. DOE
applied these scaling factors to the representative equipment class EL
equations to develop corresponding EL
equations for ballasts tested at an input voltage of 480 V. Accordingly, for the non-representative equipment classes DOE applied a multiplier of 0.97 for equations in the 50 W150 W range and of 0.99 for equations in the 150 W1000
W range. 85 FR 47472, 4748947490.
DOE received comments on the scaled ELs proposed in the August 2020 NOPD.

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For 50 W and 100 W equipment class tested at 480 V, NEMA stated that a valid max tech proposal for magnetic ballasts is achieved with a 2 percent reduction of EL 1. NEMA, No. 12 at p.
2 For the >100 W and <150 W
equipment class tested at 480 V, NEMA
stated that based on its review of products in DOEs compliance certification database only EL 1 was technologically feasible. NEMA, No. 12
at p. 2
DOE reviewed the 3 percent scaling factor for the equipment classes tested at 480 V in the 50 W150 W range proposed in the August 2020 NOPD.
Specifically, DOE reexamined the efficiencies of certified products in this equipment class to ascertain the reduction in ELs for the corresponding representative equipment class that would allow products to meet max tech levels. Per this review, DOE is revising the scaling factor to result in a 12
percent reduction i.e., multiplier of 0.88 rather than a 3 percent reduction i.e., multiplier of 0.97 to allow certified products to meet the max tech level. DOE determined that this adjustment results in EL 1 and EL 2 for the 480 V 50 W150 W equipment classes requiring a minimum efficiency less stringent than the existing minimum standard. Hence, in this analysis, for equipment classes in the 50
W150 W range tested at 480 V to prevent backsliding DOE maintained the current standard for EL 1 and EL 2 for this analysis. For EL 3, DOE applied a 0.88 multiplier as determined above to the corresponding representative equipment class EL 3 to develop a scaled EL 3 for this analysis.
For the >250 W and 500 W
equipment class tested at 480 V, NEMA

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stated that the 1 percent scaling factor still does not allow any products in DOEs compliance certification database to meet the proposed ELs, making them technologically infeasible. NEMA, No.
12 at p. 3 Signify stated that the proposed EL 1 for the >500 W and 1,000 W equipment class tested at 480V did not seem technologically feasible. Signify stated that such an efficiency for a magnetic ballast seemed impractical, particularly when there has been no research or innovation for the product. Signify, No. 13 at pp. 68
DOE identified ballasts in DOEs compliance certification database that are in the >500 W and 1,000 W tested at 480 V equipment class and meet the proposed EL 1 max tech for this equipment class. However, DOE did determine adjustments were needed to EL 1 max tech for the >250 W and 500 W equipment class tested at 480 V
to allow for certified products to meet it. Hence, DOE reviewed the 1 percent scaling factor for the equipment classes tested at 480 V in the 150 W1,000 W
range proposed in the August 2020
NOPD. 85 FR 47472, 4748947490. Per this review, DOE is revising the scaling factor to result in a 4 percent reduction i.e., multiplier of 0.96 rather than a 1
percent reduction i.e., multiplier of 0.99 to allow certified products to meet max tech. DOE determined that this adjustment results in EL 1 and EL 2 for equipment classes in the 150 W1,000
W range requiring a minimum efficiency less stringent than the existing minimum standard. Hence, in this analysis, for equipment classes in the 150 W1,000 W range tested at 480 V to prevent backsliding DOE maintained the current standard for EL 1 and EL 2 for
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