PRESCRIPTIVE APPROACH. 1. Actual and Allowed LPD 2. Complete Building Method 3. Area Category Method 4. Tailored Method

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1 PRESCRIPTIVE APPROACH 1. Actual and Allowed LPD 2. Complete Building Method 3. Area Category Method 4. Tailored Method

2 THE COMPLIANCE PROCESS There are two major steps to Title 24 compliance: 1. Meet all mandatory requirements by installing required controls and devices and ensuring that they have all of the required functionality. 2. Meet all prescriptive or performance requirements by ensuring that the actual lighting power installed in a space is less than the allowed lighting power for that space. 11/7/2014 SLIDE 175 SECTION 9 PRESCRIPTIVE APPROACH

3 ACTUAL LIGHTING POWER The actual indoor lighting power of the proposed building area is the total wattage of all planned, permanent and portable lighting systems, adjusted by the following: 1. Reduction of wattage through controls 2. Lighting wattage exclusions 3. Up to 0.3 W/ft 2 of portable lighting for office areas ONLY is excluded 11/7/2014 SLIDE 176 SECTION 9 PRESCRIPTIVE APPROACH

ACTUAL LIGHTING POWER: REDUCTION THROUGH CONTROLS If you exceed the mandatory controls requirements by installing a control where it is not required, you are eligible for a Power Adjustment Factor

4 ACTUAL LIGHTING POWER: REDUCTION THROUGH CONTROLS If you exceed the mandatory controls requirements by installing a control where it is not required, you are eligible for a Power Adjustment Factor (PAF). This will result in a lower calculated lighting power use for the installed system. ( Controlled W ) X ( PAF from A ) = Lighting Power Reduction For example, a 480 ft 2 open office plan with an occupancy control is eligible for a PAF of 0.2. Given that the controlled lighting in that space totaled 100W : (100W) X (0.2) = 20W of excluded lighting power (80W total) 11/7/2014 SLIDE 177 SECTION 9 PRESCRIPTIVE APPROACH

5 T POWER ADJUSTMENT FACTORS 11/7/2014 SLIDE 178 SECTION 5 PRESCRIPTIVE APPROACH

ACTUAL LPD: LIGHTING WATTAGE EXCLUDED Wattage of many lighting applications

videoconferencing studio Equipment that is for sale and for demonstration

industrial equipment, refrigerated cases, walk-in freezers, and food

6 ACTUAL LPD: LIGHTING WATTAGE EXCLUDED Wattage of many lighting applications may be excluded, including: Studio lighting for film or photography and for a videoconferencing studio Equipment that is for sale and for demonstration Lighting installed by the manufacturer in vending machines, scientific and industrial equipment, refrigerated cases, walk-in freezers, and food preparation equipment Photo: Jessie Whiteman 11/7/2014 SLIDE 179 SECTION 9 PRESCRIPTIVE APPROACH

7 ALLOWED LIGHTING POWER The allowed indoor lighting power for each building or area is calculated using one of the following methods: Complete Building Method Area Category Tailored Method Each of these methods involves multiplying the square footage of a space by the allowed wattage per square foot for that space. 11/7/2014 SLIDE 180 SECTION 9 PRESCRIPTIVE APPROACH

8 COMPLETE BUILDING METHOD 11/7/2014 SLIDE 181 SECTION 9 PRESCRIPTIVE APPROACH

9 COMPLETE BUILDING METHOD The Complete Building Method may only be used on projects involving entire buildings with one primary type of use or in mixed-use buildings or tenant spaces where 90% of the spaces have one primary use. This is the simplest way to comply with the standards, and many will attempt this method first before trying one of the two more complex methods. (TABLE B ) X (floor area of entire building ) = Allowed Lighting Power 11/7/2014 SLIDE 182 SECTION 9 PRESCRIPTIVE APPROACH

10 CHANGES TO B TYPE OF BUILDING ALLOWED LIGHTING POWER DENSITY (WATTS PER SQUARE FOOT) Office Building /7/2014 SLIDE 183 SECTION 5 PRESCRIPTIVE APPROACH

11 COMPLETE BUILDING METHOD EXAMPLE A 3,000 ft 2 office building uses a total of 2,000W of lighting. More than 90% of the building is used for office space. Does this space comply using the Complete Building Method? Step 1: Determine allowed lighting using Table B Offices = 0.8W/ft 2 allowed 3,000ft 2 x 0.8W/ft 2 = 2,400W allowed 11/7/2014 SLIDE 184 SECTION 8 PRESCRIPTIVE APPROACH

12 COMPLETE BUILDING METHOD EXAMPLE A 3,000 ft 2 office building uses a total of 2,000W of lighting. More than 90% of the building is used for office space. Does this space comply using the Complete Building Method? Step 2: Does it comply? 2,400 W allowed 2,000 W installed lighting YES! This space is compliant! 11/7/2014 SLIDE 185 SECTION 8 PRESCRIPTIVE APPROACH

13 B. COMPLETE BUILDING METHOD LIGHTING POWER ALLOWANCE P 2,400 W 2,400 W Office Building 0.8 W/ft 2 3,000 ft 2 2,400 W 2,400 W 11/7/2014 SLIDE 186 SECTION 8 PRESCRIPTIVE APPROACH

14 AREA CATEGORY METHOD 11/7/2014 SLIDE 187 SECTION 9 PRESCRIPTIVE APPROACH

15 AREA CATEGORY METHOD The total allowed lighting power for the building is the sum of all allowed lighting power calculations for all areas in the building. An area is defined as all adjacent spaces which are associated with a single function type, as listed in Table C. (Allowed W/ft 2 per Table C ) X (ft 2 of the area) = Allowed Lighting Power for that area 11/7/2014 SLIDE 188 SECTION 9 PRESCRIPTIVE APPROACH

16 CHANGES TO C PRIMARY FUNCTION AREA ALLOWED LIGHTING POWER (W/ft 2 ) Office Area > 250 ft Office Area 250 ft /7/2014 SLIDE 189 SECTION 5 PRESCRIPTIVE APPROACH

17 SLIDE 190 AREA CATEGORY METHOD EXAMPLE

18 Conference Room 265 ft 2 Classroom 643 ft 2 Corridors 512 ft 2 SLIDE 191

19 LIGHTING SCHEDULE Luminaire Source Type Product Example Installed Power Quantity Classroom 1x8 linear pendant Linear Fluorescent T8 Finelite series 12-ID 59W 6 Corridor Recessed downlight Integrated LED Cree LR6 12W 13 Conference Room Recessed downlight Integrated LED Cree LR6 12W 4 1x8 linear pendant Linear Fluorescent T8 Finelite series 12-ID 59W 1 Controls: 1. Both the conference room and classroom have combined manual dimming plus partial-on occupant sensing controls 2. Corridors are controlled with occupancy sensors that reduce to 40% power when vacant 11/7/2014 SLIDE 192 SECTION 8 PRESCRIPTIVE APPROACH

20 C. INDOOR LIGHTING SCHEDULE AND FIELD INSPECTION ENERGY CHECKLIST # # # # 6 Recessed downlight 1x8 Linear Pendant 12 W 59 W 1x8 Linear Pendant 59 W x W Classroom, Lecture, Training 6 Recessed downlight 12 W x W x x W 59 W Classroom, Lecture, Training Classroom, Lecture, Training Corridor, Restroom, Stair, Support 617 W 11/7/2014 SLIDE 193 SECTION 8 PRESCRIPTIVE APPROACH

21 CONFERENCE ROOM Step 1: Step 2: Step 3: Step 4: Calculate actual installed power (watts) Apply Power Adjustment Factors Calculate allowed power (watts) Determine compliance (actual < allowed) Photo: Cree, Inc. 11/7/2014 SLIDE 194 SECTION 8 PRESCRIPTIVE APPROACH

22 CONFERENCE ROOM Step 1: Step 2: Step 3: Step 4: Calculate actual installed power Apply Power Adjustment Factors Calculate allowed power Determine compliance (actual < allowed) 107 W 4x Recessed Downlight 4 x 12W = 48W 1x Linear Pendant 1 x 59W = 59W TOTAL 107 W 11/7/2014 SLIDE 195 SECTION 8 PRESCRIPTIVE METHOD

23 CONFERENCE ROOM Step 1: Step 2: Step 3: Step 4: Calculate actual installed power Apply Power Adjustment Factors Calculate allowed wattage Determine compliance (actual < allowed) 107 W W Are the installed controls all mandatory? Do any exceed the standards? The luminaires in the conference room have combined manual dimming plus partial-on occupant sensing controls, making it eligible for a Power Adjustment Factor of 0.25 from Table A. We can therefore adjust the installed wattage: 107 W x 0.25 PAF = W 107 W W = W after adjustment 11/7/2014 SLIDE 196 SECTION 8 PRESCRIPTIVE METHOD

24 MANDATORY AND PRESCRIPTIVE INDOOR LIGHTING CONTROL SCHEDULE, PAF CALCULATION, AND FIELD INSPECTION CHECKLIST Conference Room Combined Manual Dimming & Partial-ON occupant sensing control 1 P E P P P W 11/7/2014 SLIDE 197 SECTION 8 PRESCRIPTIVE APPROACH

25 CONFERENCE ROOM Step 1: Step 2: Step 3: Step 4: Calculate actual installed power Apply Power Adjustment Factors Calculate allowed wattage Determine compliance (actual < allowed) 107 W W 318 W Allowed lighting power is determined by multiplying the square footage of the space by the allowed watts per square foot in Table C. Allowed Wattage = ft 2 of the space x allowed W/ft 2 in Table C 265 ft 2 x 1.2 W/ft 2 = 318 W allowed 11/7/2014 SLIDE 198 SECTION 8 PRESCRIPTIVE METHOD

26 CONFERENCE ROOM Step 1: Step 2: Step 3: Step 4: Calculate actual installed power Apply Power Adjustment Factors Calculate allowed wattage Determine compliance (actual < allowed) 107 W W 318 W Does the space comply? Is our adjusted installed wattage less than the allowed wattage? Yes! We have W installed and are allowed 318 W. This portion of the floor plan is compliant with Title /7/2014 SLIDE 199 SECTION 8 PRESCRIPTIVE METHOD

27 CLASSROOM Actual installed: PAF Adjustment: Adjusted Installed: Allowed: 59W linear pendants x 6 = 354 W 0.25 (combined manual dimming plus parial-on occupant sensing control) W 643 ft 2 x 1.2 W per ft 2 = W Does it comply? Yes! We have W installed and are allowed up to 772 W. 11/7/2014 SLIDE 200 SECTION 8 PRESCRIPTIVE METHOD

MANDATORY AND PRESCRIPTIVE INDOOR LIGHTING CONTROL SCHEDULE, PAF CALCULATION, AND FIELD INSPECTION CHECKLIST Conference Room Classroom Combined Manual Dimming & Partial-ON occupant

28 MANDATORY AND PRESCRIPTIVE INDOOR LIGHTING CONTROL SCHEDULE, PAF CALCULATION, AND FIELD INSPECTION CHECKLIST Conference Room Classroom Combined Manual Dimming & Partial-ON occupant sensing control Combined Manual Dimming & Partial-ON occupant sensing control 1 P E P P P 1 P E P P P W 11/7/2014 SLIDE 201 SECTION 8 PRESCRIPTIVE APPROACH

29 CORRIDORS Actual installed: PAF Adjustment: Adjusted Installed: Allowed: 12 W recessed downlight x 13 = 156 W None 156 W 512 ft 2 x 0.6W per ft 2 = W Does it comply? Yes! We have 156 W installed and are allowed W. 11/7/2014 SLIDE 202 SECTION 8 PRESCRIPTIVE METHOD

30 BRINGING IT ALL TOGETHER Conference Room: Classroom: Corridors: TOTAL: W / 318 W W / W 156 W / W W / 1,397 W Photo: Cree, Inc. Photo: Acuity Brands Photo: Cree, Inc. 11/7/2014 SLIDE 203 SECTION 8 PRESCRIPTIVE METHOD

31 C-2. AREA CATEGORY METHOD GENERAL LIGHTING POWER ALLOWANCE Conference Room Classroom, Lecture, Training ft W Classroom Classroom, Lecture, Training ft W Corridor Corridor, Restroom, Stair, Support ft W 1,396.8 W 11/7/2014 SLIDE 204 SECTION 8 PRESCRIPTIVE APPROACH

32 C-1. AREA CATEGORY METHOD TOTAL LIGHTING POWER ALLOWANCES 1,396.8 W 1,396.8 W 1,396.8 W 1,396.8 W 11/7/2014 SLIDE 205 SECTION 8 PRESCRIPTIVE APPROACH

SUMMARY OF ALLOWED LIGHTING POWER 617 W 115.25 W 501.75 W 1,396.

33 SUMMARY OF ALLOWED LIGHTING POWER 617 W W W 1,396.8 W Our lighting plan is compliant. 11/7/2014 SLIDE 206 SECTION 8 PRESCRIPTIVE APPROACH

34 WHAT IF IT DIDN T COMPLY? Let s assume that our space used less-efficacious products instead of the LEDs. In this case, it is possible that our space would not comply. What happens if 1. The conference room was over its power allowance, but the other spaces were under? OR 2. All of the spaces are over their allowed lighting power limits? 11/7/2014 SLIDE 207 SECTION 8 PRESCRIPTIVE METHOD

35 TAILORED METHOD 11/7/2014 SLIDE 208 SECTION 9 PRESCRIPTIVE APPROACH

36 TAILORED METHOD This is the most granular of the three methods. Allowances for each area (just like area category) Allowances for display and task lighting within an area Allowed lighting power is determined by the occupancy type and the physical characteristics (e.g. ceiling height) of a space. See Table D for details. 11/7/2014 SLIDE 209 SECTION 9 PRESCRIPTIVE APPROACH

37 ALLOWANCES UNDER THE TAILORED METHOD The Tailored Method adds additional lighting power allowances for: Wall displays Floor displays Task lighting Ornamental/special effects lighting Very valuable display cases These lighting power allowances cannot be used in any space other than the display or task area. Any wattage not covered by these allowances must be deducted from the general lighting allowance for that area. 11/7/2014 SLIDE 210 SECTION 9 PRESCRIPTIVE METHOD

38 EXTERIOR SPACES Photo: Cree 11/7/2014 SLIDE 211 SECTION 9 PRESCRIPTIVE APPROACH

39 LIGHTING ZONES Lighting Zone 1: Government parks, recreation areas, and wildlife preserves Ambient Illumination: Dark The local entity with authority over the property will know if the property is a government designated park, recreation area, or wildlife preserve. If the park is within a rural or urban area, it can be considered a part of lighting zone two or three. Lighting Zone 2: Rural Areas Ambient Illumination: Low Rural areas include any population, housing, and territory that contain less than 2,500 people. 11/7/2014 SLIDE 212 SECTION 9 OUTDOOR LIGHTING

40 LIGHTING ZONES Lighting Zone 3: Urban Areas Ambient Illumination: Medium An urban area is a densely settled core of census tracts that contain at least 2,500 people. Lighting Zone 4: Special Use District Ambient Illumination: High This zone may be created by a local government through application to the California Energy Commission and is used for special area types that require a particularly high amount of light. 11/7/2014 SLIDE 213 SECTION 9 OUTDOOR LIGHTING

41 LIGHTING POWER ALLOWANCES The allowed lighting power for a space is determined by measuring the area of the installation and multiplying by the lighting power allowance for that space. The actual lighting power is the total watts of all non-exempt lighting systems (including ballast, driver, or transformer losses). 11/7/2014 SLIDE 214 SECTION 9 OUTDOOR LIGHTING

LIGHTING POWER ALLOWANCES When determining allowed lighting power, the number of luminaires, their mounting heights, and their layout affect the size of the illuminated area and thus the allowed

42 LIGHTING POWER ALLOWANCES When determining allowed lighting power, the number of luminaires, their mounting heights, and their layout affect the size of the illuminated area and thus the allowed lighting power for a space. The illuminated area is any hardscape area within a square around each luminaire or pole, less any obstructions. The size of this square is 10 times the luminaire mounting height, with the luminaire in the middle of the square. 11/7/2014 SLIDE 215 SECTION 9 OUTDOOR LIGHTING

43 LIGHTING POWER ALLOWANCES There are three major areas that are considered when determining the allowed lighting power for a space: Area Wattage Allowances (AWA) The Area Wattage Allowance is determined for the total illuminated hardscape area. Linear Wattage Allowances (LWA) The Linear Wattage Allowance is determined for the total perimeter length of the hardscape. The total hardscape perimeter does not include areas that are not illuminated. Initial Wattage Allowances (IWA) The Initial Wattage Allowance may be used once per project site. The IWA provides additional wattage for small sites or for unusual hardscape geometries. 11/7/2014 SLIDE 216 SECTION 9 OUTDOOR LIGHTING

44 LIGHTING POWER ALLOWANCES 11/7/2014 SLIDE 217 SECTION 9 OUTDOOR LIGHTING

PLANTERS AND LANDSCAPE AREAS Planters and small landscape areas are included within the general hardscape area as long as the width or length of the inclusion is less than 10 ft.

45 PLANTERS AND LANDSCAPE AREAS Planters and small landscape areas are included within the general hardscape area as long as the width or length of the inclusion is less than 10 ft., and the inclusion is bordered on at least three sides. Landscape areas that are greater than 10 ft. in both width and length are excluded from the general hardscape area calculation, but the perimeter of these exclusions may be included in the linear wattage allowance (LWA) calculation 11/7/2014 SLIDE 218 SECTION 9 OUTDOOR LIGHTING

Highlights of What s New with the 2016 Nonresidential Energy Code

2016 Title 24, Part 6 Highlights of What s New with the 2016 Nonresidential Energy Code Gary Shushnar, SCE with compliments to: - Gina Rodda, Gabel Energy - Martyn Dodd, EnergySoft June 15, 2016 Statewide