New additions must meet the all mandatory measures for both the prescriptive and performance method of compliance. Prescriptive requirements, including the lighting power densities, must be met if the prescriptive method of compliance is used. If the performance approach is used, the lighting power densities may be traded-off against other prescriptive building features.
Any space with a lighting system installed for the first time must meet the same lighting requirements as newly constructed buildings.
Lighting system alterations include modifications to lighting systems such as luminaire replacement, luminaire removal or relocation, and other similar modifications not considered to be modifications-in-place
Wiring alterations such as replacing or installing new wiring that connects the luminaires to switches, relays, branch circuits, and other control devices represents a lighting alteration and therefore must meet the applicable mandatory requirements as described below.
Luminaire Modifications-in-Place include lamp and ballast change-outs, reflector or optical system modifications, whole fixture retrofit kits, and similar modifications.
The nonresidential indoor lighting of the addition shall meet the applicable prescriptive lighting requirements of §110.9 §130.0 through §130.5, §140.3(c), and §140.6; or the performance requirements in §140.1.
When using the Performance approach, the indoor lighting in the addition shall meet the applicable requirements of §110.0 through §130.5; and shall meet one of the following two options:
1. The addition alone shall comply with §140.1; or
2. Meet the performance requirements for the existing building plus the addition plus the alteration.
A. Scope
Alterations to existing nonresidential, high-rise residential, or hotel/motel buildings, re-locatable public school buildings; or alterations in conjunction with a change in building occupancy to a nonresidential, high-rise residential, or hotel/motel occupancy; shall meet the following requirements:
1. Comply with the requirements for Additions, or
2. Comply with the Prescriptive lighting requirements, or
3. Comply with the Performance approach:
An Alteration is defined by the Standards as follows:
1. Any change to a building's water-heating system, space-conditioning system, lighting system, or envelope that is not an addition; and
2. Any change that is regulated by Part 6 to an outdoor lighting system that is not an addition; and
3. Any change that is regulated by Part 6 to signs located either indoors or outdoors.
An Altered Component is defined by the Standards as a component that has undergone an alteration and is subject to all applicable Standards requirements.
B. Indoor Lighting Exceptions
The following indoor lighting alterations are not required to comply with the lighting requirements in Title 24, Part 6:
1. Replacement in kind of parts of an existing luminaire that include only new lamps, lamp holders, or lenses, when replacement of those parts is not a Luminaire-Modification-in-Place in accordance with § 141.0 (b) 2 I (iii).
2. Lighting Alterations directly caused by the disturbance of asbestos.
•EXCEPTION: Lighting alterations made in conjunction with asbestos abatement shall comply with the applicable requirements in § 141.0 (b) 2 I.
C. Skylight Exception.
When the daylighting control requirements of §130.1(d) are triggered by the addition of skylights to an existing building and the lighting system is not re-circuited, the daylighting control need not meet the multi-level requirements in § 130.1(d). Daylit areas must be controlled separately from non-daylit areas. An automatic control must be able to reduce lighting power by at least 65% when the daylit area is fully illuminated by daylight.
D. Luminaire Classification and Power
1. Luminaire classification and luminaire power shall be determined in accordance with §130.0(c). See section 5.2.4 of this chapter for information on luminaire classification and power.
2. For all newly constructed buildings, for all additions, and for most other applications, the Standards do not recognize the modification of a luminaire from one lighting technology to another. However, there are limited exceptions to this general rule for some lighting alterations.
For only a Lighting System Alteration or a Luminaire Modification-in-Place, in accordance with §141.0(b)2I; an existing incandescent, fluorescent, or HID luminaire may be modified and classified as a luminaire having a different number of, or type of light source(s), provided all of the following conditions are met:
i. The luminaire has been previously used and is in an existing installation; and,
ii. The modified luminaire is 'listed with the different number or type of light source(s) under the installed conditions; and
iii. The different light source(s) is not an LED lamp, integrated or non integrated type, as defined by ANI/IES RP-16-2010; and
iv. The modified luminaire does NOT contain:
a. Unused fluorescent or HID ballast(s); or
b. Unused fluorescent or HID lamp sockets; or
c. Sockets used only for lamp support; or
d. Screw sockets of any kind or for any purpose; and
v. The wattage of the modified luminaire shall be published in the manufacturer’s catalog based on accredited testing lab reports.
3. Non-Title 24 Lighting Alterations
The Standards clarify in §130.0(c) that there are a number of luminaire modifications that shall not be recognized for compliance with the Standards. These non-recognized modifications typically involve the replacement of a lamp with other lamps. The standards do not recognize any screw-in product even if it reduces the consumption of the luminaire. The reason for this is that the screw-in product can always be unscrewed later on and an incandescent lamp inserted later on. Thus the current approach treats any screw in retrofit as having unreliable savings.
One popular retrofit product that does save energy is the screw-based LED retrofit kit, designed to be installed directly into a recessed downlight having an incandescent socket. However as a screw-in retrofit, it is not recognized by the standards, either for reducing luminaire wattage or as an alteration that triggers compliance with the lighting alterations requirements or triggers compliance with the luminaire modifications in place..
Therefore, alterations that solely use one of these methods are not recognized as an alteration and as a result are not recognized as a luminaire modification in place and do not require showing Title 24 compliance. However, once compliance with the lighting alteration Standards is required, these alteration methods are not recognized for compliance. (i.e. the wattage of a recessed downlight is the rated wattage of its socket and is not reduced to the wattage of a screw-in LED retrofit kit).
The following shall not be recognized for compliance with the Standards:
a. Luminaires and luminaire housings designed to accommodate a variety of trims or modular components that allow conversion between incandescent and any other lighting technology without changing the luminaire housing shall be classified as incandescent.
b. Screw-based adaptors shall not be used to convert an incandescent luminaire to any type of non-incandescent technology. Screw-based adaptors, including screw-base adaptors classified as permanent by the manufacturer, shall not be recognized for compliance with Part 6.
c. Replacement of lamps in a luminaire manufactured or rated for use with linear fluorescent lamps, with linear lamps of a different technology such as linear LED lamps, shall not be recognized as converting the fluorescent luminaire to a different technology for compliance with Part 6.
d. An LED lamp, integrated or non-integrated type in accordance with the definition in ANSI/IES RP-16-2010, shall not be classified as a LED lighting system for compliance with Part 6. LED modules having screw-bases including screw based pig-tails, screw-based sockets, or screw-based adaptors shall not be recognized as a LED lighting system for compliance with Part 6.
e. Luminaires manufactured or rated for use with low-voltage incandescent lamps, into which have been installed LED modules or LED lamps, shall not be recognized as a LED lighting system for compliance with Part 6.
When using the Performance Approach (using a software program certified to the Energy Commission) the altered envelope, space–conditioning system, lighting and water heating components, and any newly installed equipment serving the alteration, shall meet the applicable requirements of §110.0 through §110.9, §s §120.0 through §120.6, and §s 120.8 through §130.5.
A. Scope – Prescriptive Lighting Alterations
When using the Prescriptive Approach, the altered lighting shall meet the applicable requirements of §110.0 through §110.9, §120.0 through §120.6, and §120.8 through §130.5.
Any lighting alteration that increases the installed lighting power in an enclosed space shall meet the requirements of §110.9, §130.0, §130.1, §130.4, §140.3(c) and §140.6.
Lighting Alterations and Luminaire Modifications-in-Place shall not exceed the lighting power allowance in §140.6.
B. Requirements – Prescriptive Lighting Alterations
1. Lighting System Alterations include alterations where an existing lighting system is modified, luminaires are replaced, or luminaires are disconnected from the circuit, removed and reinstalled, whether in the same location or installed elsewhere.
a. Luminaire Modifications-in-Place are separately addressed in item C, below.
2. Lighting system alterations do not include:
a. Portable luminaires
b. Luminaires affixed to moveable partitions
c. Lighting excluded in accordance to §140.6(a)3. (See section 5.4.6 of this chapter)
3. When 10% of the luminaires in an enclosed space are altered, that space shall comply with the requirements in Table 5-11. Affected luminaires include any luminaire that is changed, replaced, removed, relocated; or, connected to, altered or revised wiring.
Following is a summary of the requirements in Table 5-11:
i. For alterations that do not change the area of the enclosed space or the space type:
a. When the sum total < 10% of existing luminaires in the enclosed space are altered:
•The existing lighting power is permitted, and
•The existing lighting control provisions are permitted
b. When the sum total ≥ 10% of existing luminaires in the enclosed space are altered, and
•The resulting installed lighting power density after the alteration is ≤ 85% of the allowed lighting power per §140.6 using the Area Category Method. The lighting power density shall not be greater than allowed according to §140.6.
•Lighting control requirements are as follows:
o §130.1(a) Manual Area Controls
o §130.1(b) Multi-Level Lighting Controls, or have a two level lighting control with at least one control step between 30 and 70% of design lighting power in a manner providing reasonably uniform illuminations
o §130.1(c) Automatic Shut-Off Controls
c. When the sum total ≥ 10% of existing luminaires in the enclosed space are altered, and
•The resulting installed lighting power density after the alteration is > 85% of the allowed lighting power per §140.6 using the Area Category Method
•Lighting control requirements are as follows:
o §130.1(a) Manual Area Controls
o §130.1(b) Multi-Level Lighting Controls
o §130.1(c) Automatic Shut-Off Controls
o §130.1(d) Daylight Controls. Daylight controls are required only for luminaires that are altered.
ii. For lighting alterations that take place in spaces where there has been a change the area of the enclosed space, or change the space type, or increase the lighting power in the enclosed space:
a. When any number of existing luminaires in the enclosed space are altered, the resulting installed lighting power after the alteration shall not exceed the allowance in §140.6 using the Area Category Method. Note that these requirements do not apply if none of the existing luminaires are altered and no new luminaires added.
b. When there is a lighting alteration in the changed space or its changed space type, lighting control requirements for this space are as follows:
o §130.1(a) Manual Area Controls applies to entire space with the lighting alteration
o §130.1(b) Multi-Level Lighting Controls – this applies only to the luminaires that are altered, replaced or added.
o §130.1(c) Automatic Shut-Off Controls - applies to entire space with the lighting alteration
o §130.1(d) Daylight Controls. Daylight controls are required only for luminaires that are altered.
When controls are newly installed as part of a lighting alteration, these controls must comply with the appropriate acceptance tests as required by §130.4. (§141(b)2)
|
Quantity of existing affected luminaires per Enclosed Space 1 |
Resulting Lighting Power for Each Enclosed Space |
Applicable Mandatory Control Provisions for Each Enclosed Space |
Multi-level Lighting Control Requirements for Each Altered Luminaire |
|
Alterations that do not change the area of the enclosed space or the space type (lighting alterations where enclosed space area or type has not changed and lighting wattage not increased) | |||
|
Sum total < 10% of existing luminaires |
Existing lighting power is permitted |
Existing provisions are permitted |
Existing controls are permitted |
|
Sum total ≥ 10% of existing luminaires |
≤ 85% of allowed lighting power per § 140.6 Area Category Method |
§130.1(a), (c) |
Two level lighting control 2 or §130.1(b) |
|
> 85% of allowed lighting power per § 140.6 Area Category Method |
§130.1(a), (c), (d) 3 |
§130.1(b) | |
|
Alterations that change the area of the enclosed space or the space type or increase the lighting power in the enclosed space (lighting alterations accompanying changes to the enclosed space area or space type or accompanying an increase in lighting power) | |||
|
Any number |
Comply with § 140.6 |
§130.1(a), (c), (d) 3, (e) |
§130.1(b) |
|
1. Affected luminaires include any luminaire that is changed, replaced, removed, relocated; or, connected to, altered or revised wiring, except as permitted by EXCEPTIONS 1 and 2 to § 141.0(b)2Iii: 2. Two level lighting control shall have at least one control step between 30 and 70% of design lighting power in a manner providing reasonably uniform illuminations 3. Daylight controls in accordance with § 130.0(d) are required only for luminaires that are altered. | |||
A. Scope – Luminaire Modifications-in-Place
1. A lighting alteration is classified as a Luminaire Modification-in-Place when luminaires are modified by one or more of the following methods:
a. Replacing lamps and ballasts with like type or quantity in a manner that preserves the original luminaire listing.
b. Changing the number or type of light source in a luminaire including: socket renewal, removal or relocation of sockets or lampholders, and/or related wiring internal to the luminaire including the addition of safety disconnecting devices.
NOTE: As described in the Luminaire Classification and Power Section above (§141.0 (b) 2 I (ii)). A screw-in lighting source replacement is not recognized for reducing the rated wattage of a luminaire nor is it considered an alteration or modification-in-place.
c. Changing the optical system of a luminaire in part or in whole.
NOTE: A screw-based LED retrofit kit, designed to be installed directly into a recessed downlight having an incandescent socket may change the distribution of the luminaire, but this is not considered a luminaire modification in place. As described in Luminaire Classification and Power Section above (§141.0 (b) 2 I (ii)) a screw-in light source replacement is not recognized for reducing the rating wattage of a luminaire nor is it considered an alteration or modification in place.
d. Replacement of whole luminaires one for one in which the only electrical modification involves disconnecting the existing luminaire and reconnecting the replacement luminaire.
2. Lighting alterations not qualifying as a Luminaire Modification-In-Place shall comply with the applicable lighting alteration requirements in §141.0(b)2I(ii). To qualify as a Luminaire Modification-in-Place, the alteration shall NOT be:
a. Part of or the result of any general remodeling or renovation of the enclosed space in which they are located.
b. The result of, or involve any changes to the panelboard or branch circuit wiring, including line voltage switches, relays, contactors, dimmers and other control devices, providing power to the lighting system.
•EXCEPTION. Circuit modifications strictly limited to the addition of occupancy or vacancy sensors and class two lighting controls are permitted for Luminaire Modifications-in-Place
3. For compliance with the Luminaire-Modification-in-Place requirements, a building space is defined as any of the following:
a. A complete single story building
b. A complete floor of a multi floor building
c. The entire space in a building of a single tenant under a single lease
d. All of the common, not leasable space in single building
4. There are two thresholds that, once met, require compliance with the Luminaire-Modifications-in-Place requirements:
a. 40 Luminaire-Modifications-in-Place per year in a building space, as defined above, plus
b. When the sum total ≥ 10% of existing luminaires in the enclosed space are Luminaire-Modifications-in-Place.
These two thresholds are used to classify the difference between minor repairs and regulated alterations.
Once the 40 Luminaire-Modifications-in-Place per year threshold has been met, any room in which ≥ 10% of existing luminaires in the enclosed space are Luminaire-Modifications-in-Place, the enclosed space shall meet the requirements in Table 141.0-F of the Standards (see table 5-13). As long as the wattage in the space is not being increased, any rooms in which <10% of existing luminaires in the enclosed space are Luminaire-Modifications-in-Place are not required to comply. (See Table 5-12).
|
Number of Luminaire-Modifications-in-Place |
Is compliance required for that enclosed space? | |
|
Per annum per building space |
In an enclosed space | |
|
< 40 in number |
< 10% |
No |
|
< 40 in number |
≥ 10% |
No |
|
≥ 40 in number |
< 10% |
No |
|
≥ 40 in number |
≥ 10% |
Yes |
5. Lighting control requirements only apply to enclosed spaces for which there are Luminaire Modifications-in-Place requiring compliance with the Standards
6. Following is a summary of the requirements in Table 5-13:
a. When the sum total of < 40 Luminaires per building space are modified in place per annum (per year):
•The existing lighting power is permitted, and
•The existing lighting control provisions are permitted
b. When the sum total of ≥ 40 Luminaires per building space are modified in place per annum, and the installed lighting power density after the alteration is ≤ 85% of the allowed lighting power per §140.6 using the Area Category Method, the lighting controls requirements are as follows:
•§130.1(a) Manual Area Controls for the entire space. This applies to all luminaires in the space, not only the modified luminaires. Therefore, area controls may need to be added to existing circuits.
•§130.1(b) Multi-Level Lighting Controls for general lighting, or have a two level lighting control with at least one control step between 30 and 70% of design lighting power in a manner providing reasonably uniform illumination. This only applies to the modified general lighting luminaires, so existing luminaires do not need to be modified or re-circuited to meet this requirement.
•§130.1(c) Automatic Shut-Off Controls. This applies to all luminaires in the space, not only the modified luminaires. Therefore, shut-off controls may need to be added to existing circuits.
c. When the sum total of ≥ 40 Luminaires per building space are modified in place per annum, and the installed lighting power density after the alteration is > 85% of the allowed lighting power per § 140.6 using the Area Category Method, the lighting requirements are as follows:
•§130.1(a) Manual Area Controls for the entire space, as above.
•§130.1(b) Multi-Level Lighting Controls for all modified luminaires, as above.
•§130.1(c) Automatic Shut-Off Controls for the entire space, as above.
•§130.1(d) Daylight Controls. Daylight controls are required only for luminaires that are modified-in-place.
a. When controls are newly installed as part of a luminaire modification in place, these controls must comply with the appropriate acceptance tests as required by §130.4. (§141(b)2).
Note: Lighting power densities shall not be greater than allowed according to §140.6.
|
For compliance with this Table, building space is defined as any of the following: 1. A complete single story building 2. A complete floor of a multi floor building 3. The entire space in a building of a single tenant under a single lease 4. All of the common, not leasable space in single building | |||
|
Quantity of affected luminaires per Building Space per annum |
Resulting Lighting Power per Each Enclosed Space Where ≥ 10% of Existing Luminaires are Luminaire Modifications-in-Place |
Applicable mandatory control provisions for each enclosed space 1 |
Applicable multi-level lighting control requirements for each modified luminaire 2 |
|
Sum total < 40 Luminaire Modifications-in-Place |
Existing lighting power is permitted |
Existing provisions are permitted |
Existing controls are permitted |
|
Sum total ≥ 40 Luminaire Modifications-in-Place |
≤ 85% of allowed lighting power per §140.6 Area Category Method |
Two level lighting control 3 Or §130.1(b) | |
|
> 85% of allowed lighting power per §140.6 Area Category Method |
§130.1(a), (c), (d) 4 |
||
|
1. Control requirements only apply to enclosed spaces for which there are Luminaire Modifications-in-Place. 2. Multi-level controls are required only for luminaires for which there are Luminaire Modifications-in-Place. 3. Two level lighting control shall have at least one control step between 30% and 70% of design lighting power in a manner providing reasonably uniform illuminations 4. Daylight controls in accordance with § 130.0(d) are required only for luminaires that are modified-in-place. | |||
A. Lighting Wiring Alterations
1. Lighting Wiring Alterations shall meet the applicable requirements in the following sections of the Standards:
a. §110.9 Mandatory requirements for lighting control devices and systems, ballasts, and luminaires.
b. §130.1, Indoor lighting controls (Area, Multi-Level, Automatic Shut-OFF, Daylighting, and Demand Responsive).
c. §130.4. Acceptance Testing and Certificates of Installation.
2. Lighting Wiring Alterations include the following:
a. Adding a circuit feeding luminaires.
b. Modifying or relocating wiring to provide power to new or relocated luminaires.
c. Replacing wiring between a switch or panelboard and luminaire(s).
d. Replacing or installing a new panelboard feeding lighting systems.
EXCEPTION Lighting Wiring Alterations allowed for Luminaire Modifications-in-Place in accordance with §141.0(b)2Iiii
Example 5-30 Threshold for lighting alterations requirements
Question
There are 60 lighting fixtures in an existing office space. We are replacing and relocating five fixtures without increasing the connected lighting load or rewiring any of the fixtures. Which Standards requirements must we comply with?
Answer
Because less than 10% of the existing luminaires in the enclosed space are affected, and the installed lighting power is not being increased, the space may maintain its existing installed lighting power and controls provisions.
Example 5-31 Rewiring of replacement luminaires
Question
If in the example above, the five replaced luminaries are also being rewired, which Standards requirement must be complied with?
Answer
If the modification involves a wiring alteration, the applicable mandatory control requirements in §110.9, §130.1 and §130.4 must be met.
Example 5-32 Standards for lighting alterations
Question
If in the example above, 20 fixtures were being replaced, then which Standards requirements must be complied with?
Answer
Because more than 10 percent of the fixtures are being replaced, the total lighting power in the space must not exceed the lighting power allowance for open offices, of 0.75 W/ square foot, as described in §140.6. 'In addition, the space must also meet the mandatory control requirements, depending on the installed lighting power. If the installed power is 85% or less of the lighting power allowance of 0.75W/ square foot, the space must meet the mandatory requirements in §130.1(a) and §130.1(c), and must have either two level lighting control, or must meet the requirements in §130.1(b). If the installed power is more than 85% of allowed 0.75W/ square foot, the space must meet the mandatory requirements in §130.1(a), §130.1(b), and §130.1(c), and all altered luminaires must meet the applicable daylighting requirements of §130.1(d).
Example 5-33 Threshold for modifications-in-place
Question
If in the example above, 20 fixtures were being replaced with fixture kits that only required disconnecting the existing luminaires, and reconnecting the new luminaires, which Standards requirements apply?
Answer
Because this alteration is considered a modification-in-place, and less than 40 fixtures are being modified, the space may maintain its existing installed lighting power and controls provisions.
Example 5-34 Standards for luminaire modifications-in-place
Question
If in the example above, 50 fixtures were being replaced with fixture kits, which Standards requirements must be complied with?
Answer
Because more than 40 fixtures are being modified, the altered lighting must not exceed the lighting power allowance for open offices, of 0.75 W/ square foot, as described in §140.6. 'In addition, the space must also meet the mandatory control requirements, depending on the installed lighting power. If the installed power is 85% or less of the lighting power allowance of 0.75W/ square foot, the space must meet the mandatory requirements in §130.1(a) and §130.1(c), and must have either two level lighting control, or must meet the requirements in §130.1(b). If the installed power is more than 85% of allowed 0.75W/ square foot, the space must meet the mandatory requirements in §130.1(a), §130.1(b), and §130.1(c), and all altered luminaires must meet the applicable daylighting requirements of §130.0(d) and §130.1(d).
Example 5-35 Lighting power allowances for additions
Question
All light fixtures are being replaced in one enclosed room of a commercial tenant space. The entire tenant space currently has a total of 25 light fixtures. The altered room will receive a total of eight new light fixtures. How much lighting power is allowed for the new lighting?
Answer
Because all lighting fixtures within the enclosed area (room) are being replaced, then more than 10 percent of the lighting in the applicable space (the enclosed room) is new. Therefore, the lighting power in this space must not exceed the allowed lighting power for the space as 'listed in §140.6. The space must also meet the control requirements in Table 5-11, based on the total installed lighting power in the space.
Example 5-36Skylit zone in renovations
Question
A 30,000 ft²addition has a 16,000 ft²space with an 18 ft high ceiling and a separate 14,000 ft²space with 13 ft high ceiling. The lighting power density in this building is 1 W/ft². Do skylights have to be installed in the portion of the building with 18 ft ceiling?
Answer
Yes. §140.3(c) requires skylights in enclosed spaces that are greater than 5,000 ft² directly under a roof with ceiling height over 15 ft. In this example the area with ceiling of greater than 15 ft is 16,000 ft², therefore there are mandatory skylight requirements. (Note: skylight requirements do not apply in climate zones 1 and 16)
Example 5-37 Skylighting requirements for alterations
Question
A pre-existing air-conditioned 30,000 ft² warehouse with 30 ft ceiling and no skylights will have its general lighting system replaced as part of a conversion to a big box retail store. Are skylights prescriptively required?
Answer
No. The general lighting system is being replaced and is not “installed for the first time.” Thus §141.9(b)2F does not apply and therefore does not trigger the requirements in §140.3(c) for skylighting.