[Code of Federal Regulations]
[Title 10, Volume 3]
[Revised as of January 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR434.401]
[Page 364-373]
TITLE 10--ENERGY
CHAPTER II--DEPARTMENT OF ENERGY
PART 434_ENERGY CODE FOR NEW FEDERAL COMMERCIAL AND MULTI-FAMILY HIGH
RISE RESIDENTIAL BUILDINGS--Table of Contents
Subpart D_Building Design Requirements_Electric Systems and Equipment
Sec. 434.401 Electrical power and lighting systems.
Electrical power and lighting systems, other than those systems or
portions thereof required for emergency use only, shall meet these
requirements.
401.1 Electrical Distribution Systems.
401.1.1 Check Metering. Single-tenant buildings with a service over
250 kVA and tenant spaces with a connected load over 100 kVA in
multiple-tenant buildings shall have provisions for check metering of
electrical consumption. The electrical power feeders for which provision
for check metering is required shall be subdivided as follows:
401.1.1.1 Lighting and receptacle outlets
[[Page 365]]
401.1.1.2 HVAC systems and equipment
401.1.1.3 Service water heating (SWH), elevators, and special
occupant equipment or systems of more than 20 kW.
401.1.1.4 Exception to 401.1.1.1 through 401.1.1.3: 10 percent or
less of the loads on a feeder may be from another usage or category.
401.1.2 Tenant-shared HVAC and service hot water systems in multiple
tenant buildings shall have provision to be separately check metered.
401.1.3 Subdivided feeders shall contain provisions for portable or
permanent check metering. The minimum acceptable arrangement for
compliance shall provide a safe method for access by qualified persons
to the enclosures through which feeder conductors pass and provide
sufficient space to attach clamp-on or split core current transformers.
These enclosures may be separate compartments or combined spaces with
electrical cabinets serving another function. Dedicated enclosures so
furnished shall be identified as to measuring function available.
401.1.4 Electrical Schematic. The person responsible for installing
the electrical distribution system shall provide the Federal building
manager a single-line diagram of the record drawing for the electrical
distribution system, which includes the location of check metering
access, schematic diagrams of non-HVAC electrical control systems, and
electrical equipment manufacturer's operating and maintenance
literature.
401.2 Electric Motors. All permanently wired polyphase motors of 1
hp or more shall meet these requirements:
401.2.1 Efficiency. NEMA design A & B squirrel-cage, foot-mounted,
T-frame induction motors having synchronous speeds of 3600, 1800, 1200,
and 900 rpm, expected to operate more than 1000 hours per year shall
have a nominal full-load efficiency no less than that shown in Table
401.2.1 or shall be classified as an ``energy efficient motor'' in
accordance with RS-3 (incorporated by reference, see Sec. 434.701). The
following are not covered:
(a) Multispeed motors used in systems designed to use more than one
speed.
(b) Motors used as a component of the equipment meeting the minimum
equipment efficiency requirements of subsection 403, provided that the
motor input is included when determining the equipment efficiency.
Table 401.2.1--Minimum Acceptable Nominal Full-Load Efficiency for Single-Speed Polyphase Squirrel-Cage Induction Motors Having Synchronous Speeds of
3600, 1800, 1200 and 900 rpm \1\
--------------------------------------------------------------------------------------------------------------------------------------------------------
2-Pole 4-Pole 6-Pole 8-Pole
-----------------------------------------------------------------------------------------------
HP Nominal Minimum Nominal Minimum Nominal Minimum Nominal Minimum
efficiency efficiency efficiency efficiency efficiency efficiency efficiency efficiency
--------------------------------------------------------------------------------------------------------------------------------------------------------
Full-Load Efficiencies--Open Motors
--------------------------------------------------------------------------------------------------------------------------------------------------------
1.0..................................................... .......... .......... 82.5 81.5 80.0 78.5 74.0 72.0
1.5..................................................... 82.5 81.5 84.0 82.5 84.0 82.5 75.5 74.0
2.0..................................................... 84.0 82.5 84.0 82.5 85.5 84.0 85.5 84.0
3.0..................................................... 84.0 82.5 86.5 85.5 86.5 85.5 86.5 85.5
5.0..................................................... 85.5 84.0 87.5 86.5 87.5 86.5 87.5 86.0
7.5..................................................... 87.5 86.5 88.5 87.5 88.5 87.5 88.5 87.5
10.0.................................................... 88.5 87.5 89.5 88.5 90.2 89.5 89.5 88.5
15.0.................................................... 89.5 88.5 91.0 90.2 90.2 89.5 89.5 88.5
20.0.................................................... 90.2 89.5 91.0 90.2 91.0 90.2 90.2 89.5
25.0.................................................... 91.0 90.2 91.7 91.0 91.7 91.0 90.2 89.5
30.0.................................................... 91.0 90.2 92.4 91.7 92.4 91.7 91.7 90.2
40.0.................................................... 91.7 91.0 93.0 92.4 93.0 92.4 91.0 90.2
50.0.................................................... 92.4 91.7 93.0 92.4 93.0 92.4 91.7 91.0
60.0.................................................... 93.0 92.4 93.6 93.0 93.6 93.0 92.4 91.7
75.0.................................................... 93.0 92.4 94.1 93.6 93.6 93.0 93.6 93.0
100.0................................................... 93.0 92.4 94.1 93.6 94.1 93.6 93.6 93.0
125.0................................................... 93.6 93.0 94.5 94.1 94.1 93.6 93.6 93.0
150.0................................................... 93.6 93.0 95.0 94.5 94.5 94.1 93.6 93.0
200.0................................................... 94.5 94.1 95.0 94.5 94.5 94.1 93.6 93.0
---------------------------------------------------------
[[Page 366]]
Full-Load Efficiencies--Enclosed Motors
--------------------------------------------------------------------------------------------------------------------------------------------------------
1.0..................................................... 75.5 74.5 82.5 81.5 80.0 78.5 74.0 72.0
1.5..................................................... 82.5 81.5 84.0 82.5 85.5 84.0 77.0 75.5
2.0..................................................... 84.0 82.5 84.5 82.5 86.5 85.5 82.5 81.5
3.0..................................................... 85.5 84.0 87.5 86.5 87.5 86.5 84.0 82.5
5.0..................................................... 87.5 86.5 87.5 86.5 87.5 86.5 85.5 84.0
7.5..................................................... 88.5 87.5 89.5 88.5 89.5 88.5 85.5 84.0
10.0.................................................... 89.5 88.5 89.5 88.5 89.5 88.5 88.5 87.5
15.0.................................................... 90.2 89.5 91.0 90.2 90.2 89.5 88.5 87.5
20.0.................................................... 90.2 89.5 91.0 90.2 90.2 89.5 89.5 88.5
25.0.................................................... 91.0 90.2 92.4 91.7 91.7 91.0 89.5 88.5
30.0.................................................... 91.0 90.2 92.4 91.7 91.7 91.0 91.0 90.2
40.0.................................................... 91.7 91.0 93.0 92.4 93.0 92.4 91.0 90.2
50.0.................................................... 92.4 91.7 93.0 92.4 93.0 92.4 91.7 91.0
60.0.................................................... 93.0 92.4 93.6 93.0 93.6 93.0 91.7 91.0
75.0.................................................... 93.0 92.4 94.1 93.6 93.6 93.0 93.0 92.4
100.0................................................... 93.6 93.0 94.5 94.1 94.1 93.6 93.0 92.4
125.0................................................... 94.5 94.1 94.5 94.1 94.1 93.6 93.6 93.0
150.0................................................... 94.5 94.1 95.0 94.5 94.5 94.1 94.1 93.0
200.0................................................... 95.0 94.5 95.0 94.5 95.0 94.5 94.1 93.6
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ For many applications, efficiencies greater than those listed are likely to be cost-effective. Guidance for evaluating the cost effectiveness of
energy efficient motor applications is given in RS-43 and RS-44 (incorporated by reference, see Sec. 434.701).
401.3 Lighting Power Allowance. The lighting system shall meet the
provisions of subsections 401.3.1 through 401.3.5.
401.3.1 Building Exteriors. The total connected exterior lighting
power for the building, or a facility containing multiple buildings,
shall not exceed the total exterior lighting power allowance, which is
the sum of the individual allowances determined from Table 401.3.1. The
individual allowances are determined by multiplying the specific area or
length of each area description times the allowance for that area.
Exceptions are as follows: Lighting for outdoor manufacturing or
processing facilities, commercial greenhouses, outdoor athletic
facilities, public monuments, designated high-risk security areas,
signs, retail storefronts, exterior enclosed display windows, and
lighting specifically required by local ordinances and regulations.
Table 401.3.1--Exterior Lighting Power Allowance
------------------------------------------------------------------------
Area description Allowance
------------------------------------------------------------------------
Exit (with or without canopy)............. 25 W/lin ft of door opening.
Entrance (without canopy)................. 30 W/lin ft of door opening.
Entrance (with canopy):
High Traffic (retail, hotel, airport, 10 W/ft \2\ of canopied
theater, etc.). area.
Light Traffic (hospital, office, 4 W/ft \2\ of canopied area.
school, etc.).
Loading area.............................. 0.40 W/ft \2\.
Loading door.............................. 20 W/lin ft of door opening.
Building exterior surfaces/facades........ 0.25 W/ft \2\ of surface
area to be illuminated.
Storage and non-manufacturing work areas.. 0.20 W/ft \2\.
Other activity areas for casual use such 0.10 W/ft \2\.
as picnic grounds, gardens, parks, and
other landscaped areas.
Private driveways/walkways................ 0.10 W/ft \2\.
Public driveways/walkways................. 0.15 W/ft \2\.
Private parking lots...................... 0.12 W/ft \2\.
Public parking lots....................... 0.18 W/ft \2\.
------------------------------------------------------------------------
[[Page 367]]
401.3.1.1 Trade-offs of exterior lighting budgets among exterior
areas shall be allowed provided the total connected lighting power of
the exterior area does not exceed the exterior lighting power allowance.
Trade-offs between interior lighting power allowances and exterior
lighting power allowances shall not be allowed.
401.3.2 Building interiors. The total connected interior lighting
power for a building, including adjustments in accordance with
subsection 401.3.3, shall not exceed the total interior lighting power
allowance explained in this paragraph. Using Table 401.3.2a, multiply
the interior lighting power allowance value by the gross lighted area of
the most appropriate building or space activity. For multi-use
buildings, using Table 401.3.2a, select the interior power allowance
value for each activity using the column for the gross lighted area of
the whole building and multiply it by the associated gross area for that
activity. The interior lighting power allowance is the sum of all the
wattages for each area/activity. Using Table 401.3.2b, c, or d, multiply
the interior lighting power allowance values of each individual area/
activity by the area of the space and by the area factor from Figure
401.3.2e, based on the most appropriate area/activity provided. The
interior lighting power allowance is the sum of the wattages for each
individual space. When over 20% of the building's tasks or interior
areas are undefined, the most appropriate value for that building from
Table 401.3.2a shall be used for the undefined spaces. Exceptions are as
follows:
(a) Lighting power that is an essential technical element for the
function performed in theatrical, stage, broadcasting, and similar uses.
(b) Specialized medical, dental, and research lighting.
(c) Display lighting for exhibits in galleries, museums, and
monuments.
(d) Lighting solely for indoor plant growth (between the hours of
10:00 pm and 6:00 am).
(e) Emergency lighting that is automatically off during normal
building operation.
(f) High-risk security areas.
(g) Spaces specifically designed for the primary use by the
physically impaired or aged.
(h) Lighting in dwelling units.
401.3.2.1 Trade-offs of the interior lighting power budgets among
interior spaces shall be allowed provided the total connected lighting
power within the building does not exceed the interior lighting power
allowance. Trade-offs between interior lighting power allowances and
exterior lighting power allowances shall not be allowed.
401.3.2.2 Building/Space Activities. Definitions of buildings/space
activity as they apply to Table 401.3.2a are as follows. These
definitions are necessary to characterize the activities for which
lighting is provided. They are applicable only to Table 401.3.2a. They
are not intended to be used elsewhere in place of building use group
definitions provided in the Building Code. They are not included in
Sec. 434.201, ``Definitions,'' to avoid confusion with ``Occupancy Type
Categories.''
(a) Food service, fast food, and cafeteria: This group includes
cafeterias, hamburger and sandwich stores, bakeries, ice cream parlors,
cookie stores, and all other kinds of retail food service establishments
in which customers are generally served at a counter and their direct
selections are paid for and taken to a table or carried out.
(b) Garages: This category includes all types of parking garages,
except for service or repair areas.
(c) Leisure dining and bar: This group includes cafes, diners, bars,
lounges, and similar establishments where orders are placed with a wait
person.
(d) Mall concourse, multi-store service: This group includes the
interior of multifunctional public spaces, such as shopping center
malls, airports, resort concourses and malls, entertainment facilities,
and related types of buildings or spaces.
(e) Offices: This group includes all kinds of offices, including
corporate and professional offices, office/laboratories, governmental
offices, libraries, and similar facilities, where paperwork occurs.
(f) Retail: A retail store, including departments for the sale of
accessories, clothing, dry goods, electronics, and toys, and other types
of establishments
[[Page 368]]
that display objects for direct selection and purchase by consumers.
Direct selection means literally removing an item from display and
carrying it to the checkout or pick-up at a customer service facility.
(g) Schools: This category, subdivided by pre-school/elementary,
junior high/high school, and technical/vocational, includes public and
private educational institutions, for children or adults, and may also
include community centers, college and university buildings, and
business educational centers.
(h) Service establishment: A retail-like facility, such as watch
repair, real estate offices, auto and tire service facilities, parts
departments, travel agencies and similar facilities, in which the
customer obtains services rather than the direct selection of goods.
(i) Warehouse and storage: This includes all types of support
facilities, such as warehouses, barns, storage buildings, shipping/
receiving buildings, boiler or mechanical buildings, electric power
buildings, and similar buildings where the primary visual task is large
items.
401.3.2--Tables and Figures
Table 401.3.2a--Interior Lighting Power Allowance W/ft \2\
--------------------------------------------------------------------------------------------------------------------------------------------------------
Gross lighted area of total building
-----------------------------------------------------------------------------------------------
Building space activity 1 0 to 2,000 ft 2,001 to 10,001 to 25,001 to 50,001 to
\2\ 10,000 ft \2\ 25,000 ft \2\ 50,000 ft \2\ 250,000 ft \2\ 250,000 ft \2\
--------------------------------------------------------------------------------------------------------------------------------------------------------
Food Service:
Fast Food/Cafeteria................................. 1.50 1.38 1.34 1.32 1.31 1.30
Leisure Dining/Bar.................................. 2.20 1.91 1.71 1.56 1.46 1.40
Offices................................................. 1.90 1.81 1.72 1.65 1.57 1.50
Retail \3\.............................................. 3.30 3.08 2.83 2.50 2.28 2.10
Mall Concourse Multi-store Service...................... 1.60 1.58 1.52 1.46 1.43 1.40
Service Establishment................................... 2.70 2.37 2.08 1.92 1.80 1.70
Garages................................................. 0.30 0.28 0.24 0.22 0.21 0.20
Schools:
Preschool/Elementary................................ 1.80 1.80 1.72 1.65 1.57 1.50
Jr. High/High School................................ 1.90 1.90 1.88 1.83 1.76 1.70
Technical/Vocational................................ 2.40 2.33 2.17 2.01 1.84 1.70
Warehouse/Storage....................................... 0.80 0.66 0.56 0.48 0.43 0.40
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ If at least 10% of the building area is intended for multiple space activities, such as parking, retail, and storage in an office building, then
calculate for each separate building type/space activity.
\2\ The values in the categories are building wide allowances which include the listed activity and directly related facilities such as conference
rooms, lobbies, corridors, restrooms, etc.
\3\ Includes general, merchandising, and display lighting.
Table 401.3.2b--Unit Interior Lighting Power Allowance
------------------------------------------------------------------------
UPD W/ft
Common area/activity \1\ \2\
------------------------------------------------------------------------
Auditorium \2\............................................. 1.4
Corridor \3\............................................... 0.8
Classroom/Lecture Hall..................................... 2.0
Electrical/Mechanical Equipment Room:
General \3\............................................ 0.7
Control Rooms \3\...................................... 1.5
Food Service:
Fast Food/Cafeteria.................................... 1.3
Leisure Dining \4\..................................... 1.4
Bar/Lounge \4\......................................... 2.5
Kitchen................................................ 1.4
Recreation/Lounge.......................................... 0.7
Stair:
Active Traffic......................................... 0.6
Emergency Exit......................................... 0.4
Toilet & Washroom.......................................... 0.8
Garage:
Auto & Pedestrian Circulation Area..................... 0.3
Parking Area........................................... 0.2
Laboratory................................................. 2.2
Library:
[[Page 369]]
Audio Visual........................................... 1.1
Stack Area............................................. 1.1
Card File & Cataloging................................. 0.8
Reading Area........................................... 1.1
Lobby (General):
Reception & Waiting.................................... 1.0
Elevator Lobbies....................................... 0.4
Atrium (Multi-Story):
First 3 Floors......................................... 0.7
Each Additional Floor.................................. 0.2
Locker Room & Shower....................................... 0.8
Office Category 1
Enclosed offices, all open plan offices w/o partitions or w/
partitions \6\ lower than 4.5 ft below the ceiling. \5\
Reading, Typing and Filing............................. 1.5
Drafting............................................... 1.9
Accounting............................................. 1.6
Office Category 2:
Open plan offices 900 ft \2\ or larger w/partitions
1 3.5 to 4.5 ft below the ceiling................
Offices less than 900 ft2 shall use category 1 \3\
Reading, Typing and Filing............................. 1.5
Drafting............................................... 2.0
Accounting............................................. 1.8
Office Category 3:
Open plan offices 900 ft \2\ or larger w/partitions \6\
higher than 3.5 ft below the ceiling.
Offices less than 900 ft /2 shall use category 1. \3\
Reading, Typing and Filing............................. 1.7
Drafting............................................... 2.3
Accounting............................................. 1.9
Common Activity Areas
Conference/Meeting Room \2\............................ 1.3
Computer/Office Equipment.................................. 1.1
Filing, Inactive....................................... 1.0
Mail Room.............................................. 1.8
Shop (Non-Industrial):
Machinery.............................................. 2.5
Electrical/Electronic.................................. 2.5
Painting............................................... 1.6
Carpentry.............................................. 2.3
Welding................................................ 1.2
Storage and Warehouse;
Inactive Storage....................................... 0.2
Active Storage, Bulky.................................. 0.3
Active Storage, Fine................................... 0.9
Material Handling...................................... 1.0
Unlisted Space............................................. 0.2
------------------------------------------------------------------------
\1\ Use a weighted average UPD in rooms with multiple simultaneous
activities, weighted in proportion to the area served.
\2\ A 1.5 power adjustment factor is applicable for multi-function
spaces when a supplementary system having independent controls is
installed that has installed power <= 33% of the adjusted lighting
power for that space.
\3\ Area factor of 1.0 shall be used for these spaced.
\4\ UPD includes lighting power required for clean-up purposes.
\5\ Area factor shall not exceed 1.55.
\6\ Not less than 90 percent of all work stations shall be individually
enclosed with partitions of at least the height described.
Table 401.3.2c--Unit Interior Lighting Power Allowance
------------------------------------------------------------------------
UPD W/ft
Specific building area/activity \1\ \2\
------------------------------------------------------------------------
Airport, Bus and Rail Station:
Baggage Area........................................... 0.8
Concourse/Main Thruway................................. 0.9
Ticket Counter......................................... 2.0
Waiting & Lounge Area.................................. 0.8
Bank:
Customer Area.......................................... 1.0
Banking Activity Area.................................. 2.2
Barber & Beauty Parlor..................................... 1.6
Church, Synagogue, Chapel:
Worship/Congregational................................. 1.7
Preaching & Sermon/Choir............................... 1.8
Dormitory:
Bedroom................................................ 1.0
[[Page 370]]
Bedroom w/Study........................................ 1.3
Study Hall............................................. 1.2
Fire & Police Department:
Fire Engine Room....................................... 0.7
Jail Cell.............................................. 0.8
Hospital/Nursing Home:
Corridor \3\........................................... 1.3
Dental Suite/Examination/Treatment..................... 1.6
Emergency.............................................. 2.0
Laboratory............................................. 1.7
Lounge/Waiting Room.................................... 0.9
Medical Supplies....................................... 2.4
Nursery................................................ 1.6
Nurse Station.......................................... 1.8
Occupational Therapy/Physical Therapy.................. 1.4
Patient Room........................................... 1.2
Pharmacy............................................... 1.5
Radiology.............................................. 1.8
Surgical & Obstetrics Suites:
General Area........................................... 1.8
Operating Room......................................... 6.0
Recovery............................................... 2.0
Hotel/Conference Center:
Banquet Room/Multipurpose \2\.......................... 1.7
Bathroom/Powder Room................................... 1.2
Guest Room............................................. 0.9
Public Area............................................ 1.0
Exhibition Hall........................................ 1.8
Conference/Meeting \2\................................. 1.5
Lobby.................................................. 1.5
Reception Desk......................................... 2.4
Laundry:
Washing................................................ 0.9
Ironing & Sorting...................................... 1.3
Museum & Gallery:
General Exhibition..................................... 1.9
Inspection/Restoration................................. 3.0
Storage (Artifacts):
Inactive............................................... 0.6
Active................................................. 0.7
Post Office:
Lobby.................................................. 1.1
Sorting & Mailing...................................... 2.1
Service Station/Auto Repair................................ 0.8
Theater:
Performance Arts....................................... 1.3
Motion Picture......................................... 1.0
Lobby.................................................. 1.3
Retail Establishments--Merchandising & Circulation Area
(Applicable to all lighting, including accent and display
lighting, installed in merchandising and circulation
areas):
Type 1: Jewelry merchandising, where minute examination 5.6
of displayed merchandise is critical..................
Type 2: Fine merchandising, such as fine apparel and 2.9
accessories, china, crystal, and silver art galleries
and where the detailed display and examination of
merchandising is important............................
Type 3: Mass merchandising, such as general apparel, 2.7
variety goods, stationary, books, sporting goods,
hobby materials, cameras, gifts, and luggage,
displayed in a warehouse type of building, where
focused display and detailed examination of
merchandise is important..............................
Type 4: General merchandising, such as general apparel, 2.3
variety goods, stationary, books, sporting goods,
hobby materials, cameras, gifts, and luggage,
displayed in a department store type of building,
where general display and examination of merchandise
is adequate...........................................
Type 5: Food and miscellaneous such as bakeries, 2.4
hardware and housewares, grocery stores, appliance and
furniture stores, where pleasant appearance is
important.............................................
Type 6: Service establishments, where functional 2.6
performance is important..............................
Mall Concourse............................................. 1.4
Retail Support Areas....................................... 2.1
Tailoring.............................................. 1.1
Dressing/Fitting Rooms................................. ...........
------------------------------------------------------------------------
\1\ Use a weighted average UPD in rooms with multiple simultaneous
activities, weighted in proportion to the area served.
\2\ A 1.5 power adjustment factor is applicable for multi-function
spaces when a supplementary system having independent controls is
installed that has installed power <= 33% of the adjusted lighting
power for that space.
\3\ Area factor shall not exceed 1.55.
[[Page 371]]
Table 401.3.2d--Unit Interior Lighting Power Allowance
------------------------------------------------------------------------
UPD W/ft
Indoor athletic area/activity1 2 \2\
------------------------------------------------------------------------
Seating Area, All Sports................................... 0.4
Badminton:
Club................................................... 0.5
Tournament............................................. 0.8
Basketball/Volleyball:
Intramural............................................. 0.8
College................................................ 1.3
Professional........................................... 1.9
Bowling:
Approach Area.......................................... 0.5
Lanes.................................................. 1.1
Boxing or Wrestling (platform):
Amateur................................................ 2.4
Professional........................................... 4.8
Gymnasium:
General Exercising and Recreation Only................. 1.0
Handball/Racquetball/Squash:
Club................................................... 1.3
Tournament............................................. 2.6
Hockey, Ice:
Amateur................................................ 1.3
College or Professional................................ 2.6
Skating Rink:
Recreational........................................... 0.6
Exhibition/Professional................................ 2.6
Swimming:
Recreational........................................... 0.9
Exhibition............................................. 1.5
Underwater............................................. 1.0
Tennis:
Recreational (Class III)............................... 1.3
Club/College (Class II)................................ 1.9
Professional (Class I)................................. 2.6
Tennis, Table:
Club................................................... 1.0
Tournament............................................. 1.6
------------------------------------------------------------------------
\1\ Area factor of 1.0 shall be used for these spaces.
\2\ Consider as 10 ft. beyond playing boundaries but less than or equal
to the total floor area of the sports space minus spectator seating
area.
Figure 401.3.2e--Area Factor Formula
[GRAPHIC] [TIFF OMITTED] TR06OC00.018
Area Factor Formula:
Area Factor (AF) = 0.2 + 0.8(1/0.9n)
Where:
AF = area factor,
CH = ceiling height (ft),
Ar = space area (ft\2\).
If AF <1.0 use 1.0; if AF 1.8 use 1.8
401.3.3 Lighting Power Control Credits. The interior connected
lighting power determined in accordance with Sec. 434.401.3.2 can be
decreased for luminaries that are automatically controlled for
occupancy, daylight, lumen maintenance, or programmable timing. The
adjusted interior connected lighting power shall be determined by
subtracting the sum of all lighting power control credits from the
interior connected lighting power. Using Table 401.3.3, the lighting
power control credit equals the power adjustment factor times the
connected lighting power of the controlled lighting. The lighting power
adjustment shall be applied with the following limitations:
(a) It is limited to the specific area controlled by the automatic
control device.
(b) Only one lighting power adjustment may be used for each building
space or luminaire, and 50 percent or more of the controlled luminaire
shall be within the applicable space.
(c) Controls shall be installed in series with the lights and in
series with all manual switching devices.
(d) When sufficient daylight is available, daylight sensing controls
shall be capable of reducing electrical power
[[Page 372]]
consumption for lighting (continuously or in steps) to 50 percent or
less of maximum power consumption.
(e) Daylight sensing controls shall control all luminaires to which
the adjustment is applied and that direct a minimum of 50 percent of
their light output into the daylight zone.
(f) Programmable timing controls shall be able to program different
schedules for occupied and unoccupied days, be readily accessible for
temporary override with automatic return to the original schedule, and
keep time during power outages for at least four hours.
Table 401.3.3--Lighting Power Adjustment Factors
------------------------------------------------------------------------
Automatic control devices PAF
------------------------------------------------------------------------
(1) Daylight Sensing controls (DS), continuous dimming..... 0.30
(2) DS, multiple step dimming.............................. 0.20
(3) DS, ON/OFF............................................. 0.10
(4) DS continuous dimming and programmable timing.......... 0.35
(5) DS multiple step dimming and programmable timing....... 0.25
(6) DS ON/OFF and programmable timing...................... 0.15
(7) DS continuous dimming, programmable timing, and lumen 0.40
maintenance...............................................
(8) DS multiple step dimming, programmable timing, and 0.30
lumen maintenance.........................................
(9) DS ON/OFF, programmable timing, and lumen maintenance.. 0.20
(10) Lumen maintenance control............................. 0.10
(11) Lumen maintenance and programmable timing control..... 0.15
(12) Programmable timing control........................... 0.15
(13) Occupancy sensor (OS)................................. 0.30
(14) OS and DS, continuous dimming......................... 0.40
(15) OS and DS, multiple-step dimming...................... 0.35
(16) OS and DS, ON/OFF..................................... 0.35
(17) OS, DS continuous dimming, and lumen maintenance...... 0.45
(18) OS, DS multiple-step dimming and lumen maintenance.... 0.40
(19) OS, DS ON/OFF, and lumen maintenance.................. 0.35
(20) OS and lumen maintenance.............................. 0.35
(21) OS and programmable timing control.................... 0.35
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401.3.4 Lighting controls.
401.3.4.1 Type of Lighting Controls. All lighting systems shall have
controls, with the exception of emergency use or exit lighting.
401.3.4.2 Number of Manual Controls. Spaces enclosed by walls or
ceiling-high partitions shall have a minimum of one manual control (on/
off switch) for lighting in that space. Additional manual controls shall
be provided for each task location or for each group of task locations
within an area of 450 ft\2\ or less. For spaces with only one lighting
fixture or with a single ballast, one manual control is required.
Exceptions are as follows:
401.3.4.2.1 Continuous lighting for security;
401.3.4.2.2 Systems in which occupancy sensors, local programmable
timers, or three-level (including OFF) step controls or preset dimming
controls are substituted for manual controls at the rate of one for
every two required manual controls, providing at least one control is
installed for every 1500 watts of power.
401.3.4.2.3 Systems in which four-level (including OFF) step
controls or preset dimming controls or automatic or continuous dimming
controls are substituted for manual controls at a rate of one for every
three required manual controls, providing at least one control is
installed for every 1500 watts of power.
401.3.4.2.4 Spaces that must be used as a whole, such as public
lobbies, retail stores, warehouses, and storerooms.
401.3.4.3 Multiple Location Controls. Manual controls that operate
the same load from multiple locations must be counted as one manual
control.
401.3.4.4 Control Accessibility. Lighting controls shall be readily
accessible from within the space controlled. Exceptions are as follows:
Controls for spaces that are to be used as a whole, automatic controls,
programmable controls, controls requiring trained operators, and
controls for safety hazards and security.
401.3.4.5 Hotel and Motel Guest Room Control. Hotel and motel guest
rooms
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and suites shall have at least one master switch at the main entry door
that controls all permanently wired lighting fixtures and switched
receptacles excluding bathrooms. The following exception applies: Where
switches are provided at the entry to each room of a multiple-room
suite.
401.3.4.6 Switching of Exterior Lighting. Exterior lighting not
intended for 24-hour use shall be automatically switched by either timer
or photocell or a combination of timer and photocell. When used, timers
shall be capable of seven-day and seasonal daylight schedule adjustment
and have power backup for at least four hours.
401.3.5 Ballasts.
401.3.5.1 Tandem Wiring. One-lamp or three-lamp fluorescent
luminaries that are recess mounted within 10 ft center-to-center of each
other, or pendant mounted, or surface mounted within 1 ft of each other,
and within the same room, shall be tandem wired, unless three-lamp
ballasts are used.
401.3.5.2 Power Factor. All ballasts shall have a power factor of at
least 90%, with the exception of dimming ballasts, and ballasts for
circline and compact fluorescent lamps and low wattage high intensity
discharge (HID) lamps not over 100 W.