Note 1 to appendix DD to subpart B:

On and after July 15, 2025, any representations made with respect to the energy efficiency of general service lamps that are not general service incandescent lamps, compact fluorescent lamps, or integrated LED lamps must be made in accordance with the results of testing pursuant to this appendix DD. Manufacturers conducting tests of such general service lamps prior to July 15, 2025, must conduct such tests in accordance with either this appendix or the version of appendix DD as it appeared in the Code of Federal Regulations on January 1, 2023. Any representations made with respect to the energy efficiency of such general service lamp must be in accordance with whichever version is selected.

1. Scope: This appendix DD specifies the test methods required to measure the initial lumen output, input power, lamp efficacy, power factor, and standby mode energy consumption of general service lamps that are not general service incandescent lamps, compact fluorescent lamps, or integrated LED lamps.

2. Definitions:

Commercially available fluorescent lamp ballast, high intensity discharge (“HID”) ballast, or external LED driver means one that can be purchased by an individual consumer at a readily accessible retailer (i.e., retailer with storefront or online purchasing).

Measured initial input power means the input power to the lamp, measured after the lamp is stabilized and seasoned (if applicable), and expressed in watts (W).

Measured initial lumen output means the lumen output of the lamp, measured after the lamp is stabilized and seasoned (if applicable), and expressed in lumens (lm).

Power factor means the measured initial input power (watts) divided by the product of the input voltage (volts) and the input current (amps) measured at the same time as the initial input power.

Publicly available manufacturer-provided compatibility list means a list or statement made available by the manufacturer on the manufacturer's official website or made available by the manufacturer through publicly available documents (e.g., product literature, catalogs, and packaging labels), that provides information on ballasts or external LED drivers that are compatible with the lamp.

3. Active Mode Test Procedures

3.1. Test Conditions and Setup

3.1.1. For single base OLED and non-integrated LED lamps, position a lamp in either the base-up and base-down orientation throughout testing. Test an equal number of lamps in the sample in the base-up and base-down orientations, except that, if the manufacturer restricts the orientation, test all of the units in the sample in the manufacturer-specified orientation. For double base OLED and non-integrated LED lamps, test all units in the horizontal orientation except that, if the manufacturer restricts the orientation, test all of the units in the sample in the manufacturer-specified orientation.

3.1.2. For integrated lamps, operate the lamp at the rated voltage throughout testing. For lamps with multiple rated voltages including 120 volts, operate the lamp at 120 volts. If a lamp is not rated for 120 volts, operate the lamp at the highest rated input voltage.

3.1.3. For non-integrated lamps, operate the lamp on a fluorescent lamp ballast, HID lamp ballast, or external LED driver in order of the following preference:

3.1.3.1. Select a commercially available fluorescent lamp ballast, HID lamp ballast, or external LED driver from the lamp's publicly available manufacturer-provided compatibility list. The test report must specify the manufacturer and model name/number of the fluorescent lamp ballast, HID lamp ballast, or external LED driver used in the test.

3.1.3.1.1. If all ballasts on the publicly available manufacturer-provided compatibility list use the same starting method, then select a ballast with that starting method to test the lamp.

3.1.3.1.1.1. If ballasts on the publicly available manufacturer-provided compatibility list are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.1. If the ballast factor in the table is not available among ballasts on the publicly available manufacturer-provided compatibility list, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.1.2. If ballasts on the publicly available manufacturer-provided compatibility list are available with multiple starting methods, then select a ballast with a starting method based on lamp type specified in Table 3.2. If the starting method in the table is not available among ballasts on the publicly available manufacturer-provided compatibility list, select any starting method on the publicly available manufacturer-provided compatibility list:

3.1.3.1.2.1. If ballasts on the publicly available manufacturer-provided compatibility list are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.3. If the ballast factor in the table is not available among ballasts on the publicly available manufacturer-provided compatibility list, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.2. If the procedure in section 3.1.3.1 is not possible, select any commercially available fluorescent lamp ballast, HID lamp ballast, or external LED driver that can operate the lamp throughout the duration of the test. The test report must specify the manufacturer and model name/number of the fluorescent lamp ballast, HID lamp ballast, or external LED driver used in the test.

3.1.3.2.1. If all commercially available ballasts use the same starting method, then select a ballast with that starting method to test the lamp.

3.1.3.2.1.1. If commercially available ballasts are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.4. If the ballast factor in the table is not available among commercially available ballasts, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.2.2. If commercially available ballasts are available with multiple starting methods, then select a ballast with a starting method based on lamp type specified in Table 3.5. If the starting method in the table is not available among commercially available ballasts, select any starting method:

3.1.3.2.2.1. If commercially available ballasts are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.6. If the ballast factor in the table is not available among commercially available ballasts, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.3. If the procedures in sections 3.1.3.1 and 3.1.3.2 are not possible, use any previously procured fluorescent lamp ballast, HID lamp ballast, or external LED driver that can operate the lamp throughout the duration of the test. The test report must specify the manufacturer and model name/number of the fluorescent lamp ballast, HID lamp ballast, or external LED driver used in the test.

3.1.3.3.1. If all previously procured ballasts use the same starting method, then select a ballast with that starting method to test the lamp.

3.1.3.3.1.1. If previously procured ballasts are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.7. If the ballast factor in the table is not available among the previously procured ballasts, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.3.2. If previously procured ballasts are available with multiple starting methods, then select a ballast with a starting method based on lamp type specified in Table 3.8. If the starting method in the table is not available among the previously procured ballasts, select any starting method:

3.1.3.3.2.1. If previously procured ballasts are available with multiple ballast factors, then select a ballast with a ballast factor based on lamp type specified in Table 3.9. If the ballast factor in the table is not available among the previously procured ballasts, select a ballast with a ballast factor closest to the one listed in the table:

3.1.3.4. If the procedures in sections 3.1.3.1, 3.1.3.2 and 3.1.3.3 are not possible and the lamp only operates on a low frequency, preheat start fluorescent lamp ballast, operate the lamp on the manufacturer-declared voltage and current. The test report must specify the voltage and current with which the lamp was operated.

3.1.4. Operate the fluorescent lamp ballast, HID lamp ballast, or external LED driver loaded with the maximum number of lamps. Test one lamp at a time in the integrating sphere, while operating the other lamps outside of the sphere. Measure the initial lumen output, initial input power, input voltage, and input current for each lamp according to section 3.2.1.

3.1.5. For a non-integrated lamp designed and marketed to replace a fluorescent lamp and operate on the existing fluorescent lamp ballast, conduct testing in accordance with the following setup provisions:

3.1.5.1. Thermal conditions: A compatible combination of ballast and LED replacement lamp designed for direct replacement of linear fluorescent lamp sources must not result in the overheating of components. LED replacement lamps that are compatible with a given ballast must not cause the ballast to operate at a higher temperature or power than the fluorescent ballast ratings. The temperature measured at the Tc point must not exceed the rating of the ballast. For magnetic ballasts and electronic ballasts with no Tc point identified, the ballast enclosure must not exceed 90 degrees Celsius.

3.1.5.2 Electrical conditions: LED replacement lamps must be measured with the ballast in the circuit, consistent with rated LED replacement lamp values on a given ballast condition (ballast type/ballast factor/lamp loading). Compatibility is based on the rated values specified by the LED lamp manufacturer. The lamp current must be equal to or less than the target lamp current. (The target lamp is the fluorescent lamp the replacement lamp is intended to replace.) The measured input power to the ballast must not exceed the rating of the ballast by more than 10%.

3.1.6. For a non-integrated lamp designed and marketed to replace an HID lamp and operate on the existing HID lamp ballast, conduct testing in accordance with the following setup provisions:

3.1.6.1. Thermal conditions: The LED replacement lamp must not exceed its maximum operational temperature rating as specified by the LED lamp manufacturer.

3.1.6.2. Electrical conditions: LED replacement lamps must be measured with the ballast in the circuit, consistent with rated LED replacement lamp values on a given ballast condition (ballast type/ballast factor/lamp loading). Compatibility is based on the rated values specified by the LED replacement lamp manufacturer. The LED replacement lamp voltage must be in a range of ±15 percent of the nominal HID lamp voltage. The lamp current must be equal to or less than the target lamp current. (The target lamp is the HID lamp the device is intended to replace.) The measured input power to the ballast must not exceed the rating of the ballast by more than 10%.

3.1.6.3. Ballast conditions: For magnetic ballasts: (1) the ballast capacitor voltage for magnetic ballasts must not exceed the capacitor rating and (2) the ballast must not exceed the temperature described in its ballast temperature code. For electronic ballasts, the temperature at the Tc point must be equal or less than described on the ballast label.

3.1.7. Ensure that the lamp is not operating as a colored lamp (as defined in 10 CFR 430.2) and operate the lamp at maximum input power. If multiple modes occur at the same maximum input power (such as variable CCT or CRI), select any of these modes for testing; however, all measurements must be taken at the same selected mode. The test report must specify which mode was selected for testing and include details such that another laboratory can replicate the test at the same mode.

3.1.8. For a lamp that has one or more component(s) that offer a completely different functionality (e.g., a speaker, a camera, an air purifier, etc.) where the component is integrated into the lamp but does not affect the light output of the lamp (e.g., does not turn the light on/off, dim the light, change the color of the light, etc.) and is capable of operating in standby mode, turn off as many of these components as possible during testing, without permanently altering the product. Permanently altering the product constitutes the cutting of wires, use of a soldering iron, or damage to or destruction of the lamp and does not constitute connecting or disconnecting wire nuts, fasteners or screws, or preserving the lamp as it was sold. If such components cannot be turned off without permanently altering the product, their energy consumption must be included in measurements. The test report must specify which components were turned off and any features that remained on.

3.2. Test Method, Measurements, and Calculations

3.2.1. To measure initial lumen output, input power, input voltage, and input current use the test procedures in the table in this section. Do not use a goniophotometer.

3.2.2. Determine initial lamp efficacy by dividing the measured initial lumen output (lumens) by the measured initial input power (watts). Per section 3.1.4, if multiple lamps were operated on the same ballast or external LED driver, determine the initial lamp efficacy by calculating the initial lamp efficacy for each lamp and calculating the average.

3.2.3. Determine power factor by dividing the measured initial input power (watts) by the product of the measured input voltage (volts) and measured input current (amps). Per section 3.1.4, if multiple lamps were operated on the same ballast or external LED driver, determine the power factor by calculating the power factor for each lamp and calculating the average.

3.3. Standby Mode Test Procedure

3.3.1. Measure standby mode power only for lamps that are capable of standby mode operation.

3.3.2. The test conditions and setup described in section 3.1 of this appendix apply to this section.

3.3.3. Connect the lamp to the manufacturer-specified wireless control network (if applicable) and configure the lamp in standby mode by sending a signal to the lamp instructing it to have zero light output. Lamp must remain connected to the network throughout testing.

3.3.4. Operate the lamp at the rated voltage throughout testing. For lamps with multiple rated voltages including 120 volts, operate the lamp at 120 volts. If a lamp is not rated for 120 volts, operate the lamp at the highest rated input voltage.

3.3.5. Stabilize the lamp prior to measurement as specified in section 5 of IEC 62301-DD (incorporated by reference; see § 430.3).

3.3.6. Measure the standby mode power in watts as specified in section 5 of IEC 62301-DD (incorporated by reference; see § 430.3).

[90 FR 4602, Jan. 16, 2025]