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Federal Register / Vol. 86, No. 203 / Monday, October 25, 2021 / Rules and Regulations TABLE IV.1EQUIPMENT CLASSESContinued
Designed to be operated with lamps of the following rated lamp wattage
Indoor/outdoor
>500 W and 1,000 W
>500 W and 1,000 W
>1,000 W and 2,000 W
>1,000 W and 2,000 W
>1,000 W and 2,000 W
>1,000 W and 2,000 W

Outdoor
Outdoor
Indoor
Indoor
Outdoor
Outdoor

Input voltage type
Tested at 480 V.
All others.
Tested at 480 V.
All others.
Tested at 480 V.
All others.

Includes 150 W MHLFs initially exempted by EISA 2007, which are MHLFs rated only for 150 W lamps; rated for use in wet locations, as specified by the NFPA 702002, section 410.4A;; and containing a ballast that is rated to operate at ambient air temperatures above 50 C, as specified by UL 10292007.
Excludes 150 W MHLFs initially exempted by EISA 2007, which are MHLFs rated only for 150 W lamps; rated for use in wet locations, as specified by the NFPA 702002, section 410.4A;; and containing a ballast that is rated to operate at ambient air temperatures above 50 C, as specified by UL 10292007.
Input voltage for testing would be specified by the test procedures. Ballasts rated to operate lamps less than 150 W would be tested at 120
V, and ballasts rated to operate lamps 150 W would be tested at 277 V. Ballasts not designed to operate at either of these voltages would be tested at the highest voltage the ballast is designed to operate.

4. Technology Options In the technology assessment, DOE
identifies technology options that would be expected to improve the efficiency of MHLFs, as measured by the DOE test procedure. The energy conservation standard requirements and DOE test procedure for MHLFs are based on the efficiency of the MH ballast contained
within the fixture. Hence DOE
identified technology options that would improve the efficiency of MH
ballasts. To develop a list of technology options, DOE reviewed manufacturer catalogs, recent trade publications and technical journals, and consulted with technical experts.
A complete list of technology options DOE considered in the August 2020

NOPD appears in Table IV.2. 85 FR
47472, 47484. DOE did not receive comments on technology options considered in the August 2020 NOPD
and therefore continues to consider them in this final determination. See chapter 3 of final determination TSD for further information.

TABLE IV.2TECHNOLOGY OPTIONS
Ballast type
Design option
Description
Magnetic

Improved Core Steel:
Grain-Oriented Silicon Steel
Amorphous Steel
Improved Steel Laminations
Copper Wiring
Improved Windings

Electronic

Electronic Ballast
Improved Components:
Magnetics
Diodes
Capacitors
Transistors
Improved Circuit Design:
Integrated Circuits

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5. Screening Analysis DOE uses the following five screening criteria to determine which technology options are suitable for further consideration in an energy conservation standards rulemaking:
1 Technological feasibility.
Technologies that are not incorporated in commercial products or in working prototypes will not be considered further.
2 Practicability to manufacture, install, and service. If it is determined that mass production and reliable installation and servicing of a technology in commercial products
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Use a higher grade of electrical steel, including grain-oriented silicon steel, to lower core losses.
Create the core of the inductor from laminated sheets of amorphous steel insulated from each other.
Add steel laminations to lower core losses by using thinner laminations.
Use copper wiring in place of aluminum wiring to lower resistive losses.
Use of optimized-gauge copper wire; multiple, smaller coils; shape-optimized coils to reduce winding losses.
Replace magnetic ballasts with electronic ballasts.
Improved Windings: Use of optimized-gauge copper wire; multiple, smaller coils;
shape-optimized coils; litz wire to reduce winding losses.
Use diodes with lower losses.
Use capacitors with a lower effective series resistance and output capacitance.
Use transistors with lower drain-to-source resistance.
Substitute discrete components with an integrated circuit.

could not be achieved on the scale necessary to serve the relevant market at the time of the projected compliance date of the standard, then that technology will not be considered further.
3 Impacts on product utility or product availability. If it is determined that a technology would have significant adverse impact on the utility of the product to significant subgroups of consumers or would result in the unavailability of any covered product type with performance characteristics including reliability, features, sizes, capacities, and volumes that are
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substantially the same as products generally available in the United States at the time, it will not be considered further.
4 Adverse impacts on health or safety. If it is determined that a technology would have significant adverse impacts on health or safety, it will not be considered further.
5 Unique-Pathway Proprietary Technologies. If a design option utilizes proprietary technology that represents a unique pathway to achieving a given efficiency level, that technology will not be considered further due to the potential for monopolistic concerns.

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