## 5.9 Additions and Alterations

### 5.9.1 Overview

New additions, similar to newly constructed buildings, must meet 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 and the new addition includes envelope or mechanical systems in the performance analysis, the lighting power densities may be traded-off against other system energy budgets.

Any space with a lighting system installed for the first time must meet the same lighting requirements as a newly constructed building.

Entire Luminaire alterations include removing and reinstalling more than 10 percent of the existing luminaires, replacing or removing and adding luminaires, and redesign of the lighting system that includes adding, removing, or replacing walls or ceilings.

Luminaire Component Modifications include replacing the ballasts or drivers and the associated lamps, permanently changing the light source, and changing the optical system such as reflectors.

Lighting Wiring alterations include wiring alterations that add a circuit feeding luminaires; that relocate, modify, or replace wiring between a switch or panelboard and luminaires; or that replace lighting control panels, panelboards or branch circuit wiring.

### 5.9.2 Additions

§141.0(a)

The nonresidential indoor lighting of the addition shall meet either the prescriptive approach or the performance approach.

When using the prescriptive approach, the indoor lighting in the addition must meet the lighting requirements of §110.9, §130.0 through §130.5, §140.3(c), and §140.6.

When using the performance approach, the indoor lighting in the addition must meet the lighting requirements of §110.0 through §130.5; and one of the following two options of the performance requirements of §140.1:

1. The addition alone; or

2. The existing building, plus the addition, plus the alteration.

### 5.9.3 Alterations – General Information

§141.0(b)

5.9.3.1 Scope

Alterations to existing nonresidential, high-rise residential, hotel/motel, or 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 Comply with the Performance approach:

An Alteration is defined by the Energy Standards as follows:

1. Any change to a building's water-heating system, space-conditioning system, lighting system, electrical power distribution system, or envelope that is not an addition; and

2. Any regulated change to an outdoor lighting system that is not an addition; and

3. Any regulated change to signs located either indoors or outdoors; and

4. Any regulated change to a covered process that is not an addition.

An Altered Component is defined by the Energy Standards as a component that has undergone an alteration and is subject to all applicable requirements.

5.9.3.2 Indoor Lighting Exceptions

The following indoor lighting alterations are not required to comply with the lighting requirements in the Energy Standards:

1. Entire luminaire alterations or component modification of portable luminaires, luminaires affixed to moveable partitions, or lighting excluded by §140.6(a)3.

2. In an enclosed space where only two luminaires are affected by entire luminaire alterations, luminaire component modifications, or lighting wiring alterations.

3. Disturbance of asbestos directly caused by entire luminaire alterations, luminaire component modifications, or lighting wiring alterations, unless the modifications are made in conjunction with asbestos abatement.

4. Lighting wiring alterations strictly limited to addition of lighting controls.

EXCEPTION: Lighting alterations made in conjunction with asbestos abatement shall comply with the applicable requirements in §141.0(b)2I

5.9.3.3 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 percent when the daylit area is fully illuminated by daylight.

5.9.3.4 Alterations – Performance Approach

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.

5.9.3.5 Alterations – Prescriptive Approach

When using the Prescriptive Approach, the altered lighting shall meet the applicable requirements of §110.0, §110.9, and §130.

### 5.9.4 Lighting Alterations

§141.0(b)2I,

Lighting alterations are either alterations to entire luminaires, called Entire Luminaire Alterations, or modifications of installed luminaires, called Luminaire Component Modifications.

Entire Luminaire Alterations are alterations that include or affect the entire luminaire, such as the complete replacement of old luminaires with new; completely disconnecting the luminaire from the circuit, modifying it, and reinstalling it; or moving or modifying the walls or ceilings of the space along with modifying the space’s lighting system. Luminaire Component Modifications are modifications in place that include replacing the ballasts or drivers and the associated lamps in the luminaire, permanently changing the light source of the luminaire, or changing the optical system of the luminaire. The Energy Standards compliance goals for the lighting alterations are twofold: first, the installation must meet the lighting power level specified in the Energy Standards, and second, the installation must provide the lighting controls functionality specified in the Energy Standards.

The 2016 Energy Standards allow three options for meeting the installed power and associated control requirements:

1. Installed lighting power that is greater than 85 percent of Table 140.6-C

2. Installed lighting power that is equal or less than 85 percent of Table 140.6-C

3. Where total rated power of the replacement luminaires in the occupancy, compared to the total rated power of the existing luminaires in the occupancy, have 50 percent lower power in hotel, office, and retail occupancies, and 35 percent lower power in all other occupancies.

Option 3 is new for 2016 and allows the maximum installed lighting power to be determined by totaling and taking a percentage of the currently installed lighting power, rather than by measuring the square footage of the space and multiplying it by a lighting power allowance. As this is likely to result in a lower allowed lighting power than option 2, bi-level controls are not required for this option. The control requirements for each option are described in Table 5-4.

#### Table 5-4 (Modified Table 141.0-E): New Control Requirement for Lighting Alterations

Applicable §130.1 Control requirements: | Lighting power is reduced by 35/50% compared to existing | Resulting lighting power, compared to the lighting power allowance specified in §140.6(c)2, Area Category Method
| Lighting power is ≤ 85% of allowance | Lighting power is > 85% to 100% of allowance
§130.1(a)1, 2, and 3 Area Controls | Yes | Yes | Yes
§130………...1(b) Multi-Level Lighting Controls – only for alterations to general lighting of enclosed spaces 100 square feet or larger with a connected lighting load that exceeds 0.5 watts per square foot | Not Required | Bi-level control for each enclosed space, minimum one step between 30-70 percent of lighting power regardless of luminaire type, or meet Section 130.1(b) | Yes
§130.1(c) Shut-Off Controls | Yes1 | Yes | Yes
§130.1(d) Automatic Daylight Controls | Not Required | Not Required | Yes
§130.1(e) Demand Responsive Controls – only for alterations > 10,000 ft2 in a single building, where the alteration also changes the area of the space, or changes the occupancy type of the space, or increases the lighting power | Not Required | Not Required | Yes
1 As bi-level controls are not required for this option, partial-off controls are not required to be installed in place of “full off” automatic shutoff controls for library book stack aisles, corridors and stairwells (see Sections 141.0(b)2Iii and Jii).

The following lighting alterations are not required to comply with §141.0(b)2I, Entire Luminaire Alterations, or §141.0(b)2J, Luminaire Component Modifications:

1. Alterations in an enclosed space where only two luminaires are replaced or reinstalled.

2. Alterations that would directly cause the disturbance of asbestos, unless the alterations are made in conjunction with asbestos abatement.

3. Alterations of portable luminaires, luminaires affixed to moveable partitions, or lighting excluded by §140.6(a)3.

The acceptance testing requirement of §130.4 is not required for alterations where lighting controls are added to control 20 or fewer luminaires.

Example 5-31 Entire Luminaire Alteration Options Question

All light fixtures are being replaced in one enclosed room of a commercial tenant space. The entire tenant space has a total of 25 light fixtures. The altered room will receive a total of eight new light fixtures. Which Energy Standards requirements must we comply with?

Answer

Since all lighting fixtures within the enclosed area (room) are being replaced and there are no alterations to walls or ceilings, it can comply with the requirement of either subparagraph i or subgraph ii of §141.0(b)2I.

Example 5-32 Threshold for entire luminaire alterations requirements (changeout example)

Question

There are 100 lighting fixtures in an existing office space. Ceilings are being replaced with new, together with replacing all the existing light fixtures with new. There is no change in the fixture layout. Which Standards requirements must we comply with?

Answer

Since the scope of work includes replacing all existing light fixtures, the project must comply with §141.0(b)2I. However, since the scope also includes ceiling replacement, it must comply specifically with subsection “i” of this section: the luminaires must meet the lighting power allowance in §140.6 and the altered luminaires must meet the applicable requirements in Table 141.0-E.

Example 5-33 Threshold for entire luminaire alterations requirements (remodel example)

Question

There are 100 lighting fixtures in an existing office space. Walls are being altered, together with a replacement of the existing light fixtures with 80 new fixtures. Which Energy Standards requirements must we comply with?

Answer

Since the scope of work includes a redesign of the lighting system along with wall alterations, it must comply with §141.0(b)2Ii. It must meet requirements include the lighting power allowance in §140.6 and applicable control requirements in Table 141.0-E.

Example 5-34 Rewiring of replacement luminaires (example compliance with lighting wiring alterations)

Question

If the lighting system is being rewired as part of a lighting alteration project, which Energy Standards requirement must be complied with?

Answer

When the alteration involves a wiring alteration, it must comply with the control requirements as specified in §141.0(b)2K. This is in addition to any applicable lighting alteration requirements. Note: many of the requirements for wiring alterations and lighting alterations are the same. Acceptance test requirement is triggered if controls are added to control more than 20 luminaires.

Example 5-35 Multi-floor retail project (example compliance with lighting alterations)

Question

The lighting is being retrofitted in a retail building with two floors. The first floor has fixtures which are being replaced with new LED fixtures. Also on this floor are two offices with one fixture each and a conference room with two fixtures. The aggregate wattage of the new first floor fixtures is 55 percent less than the original fixture wattage. The second floor has linear fluorescent ceiling fixtures which are being retrofitted with LED conversion kits. How do the Energy Standards impact the overall project?

Answer

The retrofits on the first floor are entire luminaire alterations. The building occupancy is retail so the power reduction threshold is 50 percent; a lighting power allowance could be calculated based on square footage, but because the new fixtures use less than half the power of the original fixtures, it makes sense to use the percent reduction approach. The new fixtures must comply with the controls requirements in §141.0(b)2Iii. Those applicable provisions are §130.1(c)1A through C, §130.1(c)2, §130.1(c)3, §130.1(c)4, and §130.1(c)5. However, since there are offices and conference rooms with two or fewer fixtures, per Exception 2 to §141.0(b)2I those rooms are not required to comply with control requirements. The retrofits on the second floor are luminaire component modifications. Luminaire component modifications have the same option to either determine the lighting power allowance based on the area type and square footage, or based on a percent reduction in the lighting power. In short, even though the two floors are using different retrofit approaches, the same options and the same requirements ultimately apply.

Example 5-36 Example Warehouse Lighting Alteration (example compliance with the 50/35 percent lighting power reduction option)

Question

The existing metal halide luminaires in a warehouse facility are proposed to be replaced by LED luminaires (shown below). There are 100 existing metal halide luminares that use 250 watts each, all of which will be replaced. The replacement LED luminaires use 150 watts each; it seems easy to see that this is more than a 35 percent reduction. How is compliance determined under the new power reduction option, and what controls are required?

A lamp taken from an existing luminaire Label of an existing luminaire

Source: EcologyAction Source: EcologyAction

Picture of one of the new LED luminaire

Source: EcologyAction

Answer

As a warehouse is not an “office, hotel, or retail” space, the power reduction option requires a 35 percent reduction in installed lighting power. Thus, enter the number and wattage of the existing luminaires into NRCC-LTI-06, and use the form to calculate both the existing installed lighting power (100 x 250 = 25,000) and the maximum allowance based on a 35 percent reduction (25,000 x 0.65 = 16,250). Enter the number and wattage of the new luminaires into NRCC-LTI-01, just like any other project; if this is a one-for-one replacement, then the total lighting power of the new luminaires would be under the allowance (100 x 150 = 15,000).

As the lighting power reduction exceeds 35 percent, only area on/off controls and automatic shutoff controls are mandatory as specified in Section 141.0(b)2Iii and summarized in Table 5-4.

### 5.9.5 Alterations –Luminaire Component Modifications

§141.0(b)2J

The followings are defined as luminaire component modifications in the 2016 Energy Standards:

1. Replacing the ballasts or drivers and the associated lamps in the luminaire;

2. Permanently changing the light source of the luminaire; or

3. Permanently changing the optical system of a luminaire.

Lamp replacement alone and ballast replacement alone is not considered a modification of the luminaire as long as the replacement lamps or ballasts are installed and powered without modifying the luminaire. In addition, the following luminaire modifications are not required to comply with §141.0(b)2J, Luminaire Component Modifications:

1. Modifications that would cause the disturbance of asbestos, unless the modifications are made in conjunction with asbestos abatement; and

2. Modification of portable luminaires, luminaires affixed to moveable partitions, or lighting excluded by §140.6(a)3.

Acceptance testing requirement of §130.4 is not required for modifications where lighting controls are added to control 20 or fewer luminaires.

Example 5-37 Threshold for luminaire component modifications

Question

There are 100 lighting fixtures in an existing office space. For 20 fixtures, the internal components are being replaced with new kits that only require disconnecting the existing luminaires, and reconnecting the new luminaires, which Energy Standards requirements apply?

Answer

Because this alteration is considered luminaire component modifications, and less than 70 fixtures are being modified, the space may maintain its existing installed lighting power and controls provisions.

Example 5-38 Standards for luminaire component modifications

Question

If in the example above, 70 fixtures are being replaced with fixture kits, which Energy Standards requirements must be complied with?

Answer

Because 70 or more fixtures are being modified, the lighting system in the space with the modifications can either comply with §140.6 or comply with the 35/50 percent lower rated power compared to the original luminaires approach. It must also comply with §130.1(a)1, 2 and 3, and §130.1(c)1A through 1C, §130.1(c)2, §130.1(c)3 through §130.1(c)6A, and for parking garages §130.1(c)7B.

Example 5-39 Luminaire Component Modification Counting

Question

If a project includes 70 or more luminaire component modifications on a floor, but a portion of those modifications are enclosed spaces containing two or fewer luminaires, do the luminaires in the enclosed spaces count toward the total 70 or more trigger under §141.0(b)2J?

Answer

Yes, the Exception 2 to §141.0(b)2J that exempts two or fewer luminaire component modifications in an enclosed space only exempts the luminaires in those spaces from the control requirements, but does not reduce the total luminaire count on a floor. Therefore the controls would not be required in the enclosed spaces with two or fewer luminaires, but controls would be required for the rest of the floor if the total count (including the luminaires in the enclosed spaces) were more than the 70 trigger.

Example 5-40 Lamp replacements as part of a project

Question

A single-story retail store has 60 T12 linear fluorescent strip fixtures and two sections of track lighting. One of the tracks has 10 screw-in incandescent flood lights and the other track has 10 pin-based halogen PAR lamps. The linear fixtures are being retrofitted with T8 lamps and premium ballasts and in the track fixtures the screw-in and pin-based incandescent lamps are being replaced with equivalent screw-in and pin-based LED lamps. What are the Energy Standards requirements for this job?

Answer

The Energy Standards are not triggered for this project because fewer than 70 fixtures are being modified. Even though a total of 80 fixtures are included in the project, the 20 incandescent fixtures do not count toward the 70 threshold because they are simple lamp replacements that do not count as modifications (per §141.0(b)2J).

Example 5-41 Compliance documentation

Question

A warehouse project has 100 existing HID high bay fixtures which are being converted to third generation T8 high bays. The building occupancy is warehouse so the savings threshold is 35 percent. The aggregate wattage of the new replacement fixtures is 45 percent below the original fixture wattage, so the controls requirements in 141.0(b)2Iii apply. How is the 45 percent wattage delta between the existing fixtures and the new fixtures documented for compliance purposes?

Answer

Documentation is the same as for an Entire Luminaire Alteration, as described in Example 5-36: you will complete the NRCC-LTI-06 form to record the number and wattage of the original fixtures, and calculate both the total existing wattage and the allowed lighting power based on a 35 percent reduction. The newly modified lighting will be documented on the NRCC-LTI-01, just like any other project. As the lighting power reduction exceeds 35 percent, only area on/off controls and automatic shutoff controls are mandatory as specified in Section 141.0(b)2Iii and summarized in Table 5-4.

### 5.9.6 Alterations - Lighting Wiring Alterations

§141.0(b)2K

Lighting Wiring Alterations are defined in the 2016 Energy Standards as one of the following:

1. Adding a circuit feeding luminaires;

2. Replacing, modifying, or relocating wiring between a switch or panelboard and luminaires;

3. Replacing lighting control panels, panelboards, or branch circuit wiring.

Changes to wiring not listed above are not considered to be “lighting wiring alterations” as the term is used in the Energy Standards, and it is not mandatory to comply with §141.0(b)2K requirement. Note: Alterations that include adding, removing, or replacing walls or ceilings resulting in redesign of the lighting system must meet the requirements of Table 141.0-E, as specified in §141.0(b)2I.

The following wiring alterations are not required to comply with §141.0(b)2K, Lighting Wiring Alterations:

1. Alterations strictly limited to addition of lighting controls.

2. In an enclosed space where wiring alterations involve only two of fewer luminaires.

3. Alterations that would cause the disturbance of asbestos, unless the alterations are made in conjunction with asbestos abatement.

Acceptance testing requirement of §130.4 is not required for wiring alterations where lighting controls are added to control 20 or fewer luminaires.

Example 5-42 Standards for Lighting Wiring Alterations

Question

If occupancy sensing controls are added to a suite of office spaces, does this addition trigger the requirements of §141.0(b)2K (Lighting Wiring Alterations)?

Answer

No, since the alterations are limited to the addition of occupancy sensing controls, it does not trigger any of the requirements of §141.0(b)2, including Lighting Wiring Alterations.

Example 5-43 Skylights

Question

A 30,000 ft ² addition has a 16,000 ft ² space with an 18 ft high ceiling and a separate 14,000 ft ² space with a 13 ft high ceiling. The lighting power density in this building is 1 W/ft ². 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 ft ² directly under a roof with a ceiling height over 15 ft. In this example the area with a ceiling height greater than 15 ft is 16,000 ft ²; therefore there are mandatory skylight requirements. (Note: skylight requirements do not apply in climate zones 1 and 16).

Example 5-44 Skylighting requirements for alterations

Question

A pre-existing air-conditioned 30,000 ft ² warehouse with a 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, §141.0(b)2F does not apply and therefore does not trigger the requirements in §140.3(c) for skylighting