Attachment_4_CAFB_Electrical_Standards-2016.pdf

Last Edited by: Diep Nguyen

Base Electrical Engineer

Print Date: March 13, 2012

Cannon Air Force Base Page 1

U.S. AIR FORCE

Electrical Standards Cannon AFB, New Mexico

2 7 SOCES / C E O

Cannon Air Force Base Page 2

Table of Contents

GENERAL REQUIREMENTS 3

ELECTRICAL UTILITIES 4

4GENERAL DESCRIPTION

SPECIFIC REQUIREMENTS 4

EXTERIOR LIGHTING 4

INTENT 4

APPLICABILITY 4

EXCEPTIONS 4

PROHIBITED LIGHTING 5

SPECIFIC REQUIREMENTS 5

EXTERIOR ELECTRICAL WORK

APPLICABILITY

SPECIFIC REQUIREMENTS

INTERIOR ILLUMINATION LEVELS 10

INTERIOR ELECTRICAL WORK 10

APPLICABILITY

SPECIFIC REQUIREMENTS

LIGHTNING PROTECTION 11

SPECIFIC REQUIREMENTS 11

CONTRACTING PACKAGE 12

Edited by: Gaballa Mokhtar & Powers Thomas , April 2016

Edited by: Gaballa Mokhtar & Powers Thomas , April 2016 Cannon Air Force Base Page 3

Electrical Standards

General Requirements

1. Site and project specific electrical security requirements will be developed with the advice and assistance of the

27SOCES/CEN and CEO flights.

2. As a minimum, design in accordance with the latest of the NFPA 70, National Electrical Code (NEC); Design Safety Requirements for Electrical Systems (29 CFR 1910); Section 340 of the Energy Conservation and Production Act (42 U.S.C. 6834); Unified Facilities Criteria (UFC) 1- 200-01, General Building Requirements; UFC 3-501- 01, Electrical Engineering;

UFC 3-520-01, Interior Electrical Systems; UFC 3-530-01, Design: Interior and Exterior Lighting and Controls; UFC 3-550-01, Exterior Electrical Power Distribution UFC3-575-01Lightning And Static Electricity ProtectionSystems ,UFC 3-560-01Electrical safety and electrical Operations and Maintenance (O&M) criteria;

the latest applicable Unified Facilities Guide Specifications (UFGS); and applicable Engineering Technical Letters (ETLs) and as specified, herein, or in the requirements document. Incorporate any additional and/or more stringent requirements specified, herein, or in the project requirements document.if there are conflicts between NFPA 70 and the UFC, apply the criteria provided in the UFC.

3. For large electrical designs perform electrical load analysis, coordination study, voltage drop analysis, conductor sizing and other design calculations(comply with UFC 3-501-01and othe UFCs) as required by the 27 SOCES PM (Project Manager),Base Electrical Engineer and ElectricalSuperintendent.

4. Do not use spare capacity as part of the demand calculations specified in UFC 3-501-01. The overall calculations already account for this spare capacity with the 20% allowance for future load growth specified in UFC 3-501-01 load analysis calculations for the service entrance.

5. Ensure that the primary distribution has adequate capacity to supply the added load imposed by the proposed project. Submit this data to the 27 SOCES PM in SKM Power Tools for Windows or other electronic format as approved by the

27 SOCES PM. Submit final approved copies of this data to Central Engineering Files (CEF).

6. Primary voltage is 12470/7200 V, 3 phases, except Airfield circuits.

7. Secondary voltage is 277/480 V or 120V/208 V.

8. The Cannon Air Force Base (CAFB) Fire

Department and Safety Office shall be invited to participate in all design reviews that include fire protection systems.

9. The CAFB Electrical Engineer and Electrical

Superintendent shall be invited to participate in all facility design reviews and design reviews impacting the medium voltage distribution system. The CAFB Electrical Engineer and

Electrical Superintendent shall be required to concur with all designs that affect the medium-voltage distribution system. Concurrence shall be provided by signature on drawings and specifications prior to approval and construction.

10. Electrical equipment: Locate service entrance equipment and other major electrical equipment in a dedicated electrical equipment room.

Provide a main breaker on each service entrance.

Locate other electrical equipment, such as electrical panels, in dedicated spaces.Identify when 100 percent rated circuit breakers are included in the design.

11. All electrical designs shall provide an updated panel schedule (if affected) with the design package. The latest panel board schedule can be obtained from CE and should be compared with the panel schedule in the field (if available). If there are differences of a significant nature, or no field schedule is available, inform the Contracting

Officer’s Technical Representative, 27 SOCES

PM or the construction monitor for resolution.

Once work has been completed, the contractor or shops performing the work shall ensure the updated panel schedule is installed in/on the panel board and the panel schedule is returned to 27 SOCES.

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12. In matters of facility design, construction, operations and maintenance, the safety and health of employees and the public and mitigation of any adverse impacts on the environment take precedence over other aspects such as function, cost or expediency. ES&H facility performance objectives shall comply with applicable provisions of the latest edition of the 27 SOCES/CAFB Environmental Resources Document (ERD).

13. Minimum primary distribution conduit for medium voltage conductor burial depth shall be 36 inches to top of concrete encasement. Note: All primary medium voltage distribution shall be in conduit, encased in 3000 psi concrete minimum 28-day compressive strength.

Concrete associated with electrical work for other than encasement of underground ducts must be 4000 psi , minimum 28-day compressive strength unless specified otherwise.and shall have metallic strip caution tape installed per the NEC. Concrete encasement will contain red dye or top surface painted red.

Electrical Utilities

General Description Utilities are a functional and unavoidable element that should be blended into other site features. These elements can create visual clutter. Therefore, every effort should be made to minimize the negative impact to increase focus on more aesthetic areas in the landscape. Relocating significant utilities lines and equipment away from high visibility areas will have the greatest impact in improving the overall character of the installation.

Specific Requirements

New overhead primary and secondary distribution are prohibited on CAFB. Primary distribution at Melrose

Range is the responsibility of Roosevelt Electric. Existing overhead distribution shall be relocated underground at the earliest opportunity.

1. Exposed cables, conduit and conductors are prohibited.

Exceptions shall be submitted to and approved by 27th

SOCES.

2. Utility structures shall be incorporated with building designs to avoid free standing elements.

3. Pad mounted equipment shall be located in less visible areas and screened.

4. Irrigation back flow preventers may use solar powered housing.

5. Utilities shall be collocated prior to entering the service side of the buildings.

6. Underground electrical distribution vaults are prohibited.

Lighting Exterior Lighting

Intent To set forth lighting standards for outdoor uses that serve to create a safe and comfortable nighttime environment, while protecting the public’s ability to view the night sky. These lighting standards are designed to ensure personal safety and prevent motor vehicle and pedestrian conflicts by reducing the negative effects of glare, light pollution and light trespass.

Applicability Designs will comply with the NFPA 70 (NEC);

Design Safety Requirements for Electrical Systems (29 CFR 1910); Section 340 of the Energy Conservation and Production Act (42 U.S.C.

6834);ASHRAE 90.1, UFC 3-501- 01, Electrical Engineering; UFC 3-530-01, Design: Interior and Exterior Lighting and Controls; applicable Engineering Technical Letters (ETLs), and this document. The outdoor lighting regulations contained herein shall apply to all exterior lighting and to interior lighting to the extent that interior lighting impacts the outdoor environment, including lighted signage.

Exceptions

1. Lighting required by the FAA for the air traffic control and warning purposes.

2. Airfield operations, aprons and adjacent areas use lighting requirements from UFC

3-535-01, Design Standards for Visual Air Navigation Facilities.

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3. Requirements stated in UFC 3-530-01, Design:

Interior and Exterior Lighting and Controls, that conflict or are more stringent than those listed in this document.

4. Temporary lighting required for emergency purposes, construction lighting, or repairs.

5. Temporary low-wattage lighting for public festivals or events and holiday observances provided disability glare is not created.

6. Single-family residential lighting, except as prohibited in this document.

Prohibited Lighting

1. Low pressure sodium and mercury vapor lamping.

2. Blinking, flashing or changing intensity lights including those proposed for signage.

3. Lighting that could be confused with traffic control devices.

4. Lighting of a type, style or intensity determined to interfere with the safe flow of traffic.

5. Strobe lights, searchlights, beacons and laser light or similar upward or outward oriented lighting.

6. Lighting creating a public hazard, including lighting that creates disability glare, particularity where such disability glare has a detrimental effect on motor vehicle traffic.

7. Lighting mounted on poles for the purpose of illuminating the building façade.

8. High-intensity floodlighting except as approved for sport facility lighting.

9. Wall pack light fixtures that are not classified as full cutoff.

Specific Requirements

1. Light levels for streetscapes, parking and pedestrian areas shall be no more than 5 foot-candles (fc) and not less than 0.2 fc.

2. Timer/Photocell combination full cutoff controls that turn on at dusk and turn off at sunrise or selected times shall be used for all exterior fixtures including parking lots.

3. All exterior lights shall be full cut-off fixtures.

4. All service to exterior lighting shall be underground or solar powered.

5. All pole mounted fixtures shall be shoebox type, factory finished medium bronze, and mounted on a tapered round pole with one or two arms depending on the light level and coverage needed.

6. Roadway and parking lot lights shall be mounted at a height of 30’ 0” maximum.

7. Roadway Lighting:

a. Primary, secondary, tertiary and service roadways shall all use the same luminaries, poles and mounting heights.

b. Poles mounted along roads shall be spaced evenly, as feasible.

c. Lighting shall be provided on all corners of intersections.

8. Parking Lot Lighting:

a. Pole placement shall be coordinated with the layout of parking islands.

b. A maximum of two light fixtures per pole is recommended for parking lots, except for perimeter lighting which should be limited to one fixture per pole.

c. Perimeter lighting shall be classified by

IES as Type II or Type III.

9. Pole mounted fixtures in parking lots or

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Powers Thomas , April 2016 unprotected areas of traffic shall be mounted on a 2’ 6” concrete pier.

10. Pedestrian Lighting:

a. Pole mounted walkway lighting shall be 12’

0” high.

b. Bollard lighting is prohibited.

c. Pedestrian scale lighting shall be provided along sidewalks and recreational trails that are not directly adjacent to lighted roadways.

11. Traffic signals shall match the style and form of those on Air Commando Blvd.

12. Outdoor lighting shall meet the following requirements:

a. Light fixtures, except as otherwise permitted in this Standard, are required to be full cutoff as defined by the Illuminating Engineering

Society of North America (IESNA).

b. Full cutoff light fixtures result in a light distribution pattern where no light is permitted at or above a horizontal plane at the bottom of the fixture.

13. All outdoor light fixtures should utilize one of the following lamp types:

a. Metal halide,

b. Electrode-less induction,

c. Compact fluorescent,

d. Incandescent (including tungsten-halogen),

e. High pressure sodium (HPS),

f. Light Emitting Diodes (LED) in compliance with Engineering Technical Letter (ETL) 10-2:

Light-Emitting Diode (LED) Fixture Design and Installation Criteria for Interior and Exterior Lighting Applications, 18 March 2010 or most current version, and

g. Alternative lamp types are permitted provided they are approved by CAFB and can be demonstrated to be more effective for the proposed use, based on

IESNA recommendations.

14. Full cutoff fixtures may not be tilted or aimed in a manner that results in light distribution above the horizontal plane.

15. Canopy Lighting:

a. Light fixtures associated with canopies, including but not limited to fuel islands, seasonal outdoor areas and bank drive-through, shall be full cutoff or mounted so that the bottom of the lens is recessed or flush with the bottom surface of the canopy.

b. All light emitted from canopies shall be substantially confined to the ground plane directly beneath the perimeter of the canopy.

c. No lighting of any kind shall be allowed on the top or sides of a canopy, unless approved by CAFB.

d. Spacing between fixtures and height of canopies shall be designed so that the luminance level under the canopy does not exceed 20 fc.

16. All light fixtures within 15’ 0” of Cannon

Family Housing or base boundaries adjacent to residential areas shall be classified as IES

Type II or Type III. Fixtures shall be fitted with “house side shield” reflectors on the sides facing the residential areas.

17. Luminance levels shall not exceed 10 fc measured as initial horizontal luminance unless stated otherwise in this document. The initial luminance level is measured following

100 hours of operation.

18. The luminance levels at building entrances and windows may exceed 10 fc by 100% up to a distance 5’ 0” from the building to accommodate light spillage from within the building and light from signage.

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19. The use of semi-cutoff or cutoff (as opposed to full cutoff) fixtures shall be permitted to illuminate areas other than parking lots provided the pole or mounting point is no more than 10’

0” in height and the maximum lumen output does not exceed 1800 lumens per lamp.

20. When semi-cutoff or cutoff fixtures are used, a maximum of one lamp per fixture and two fixtures per pole or mounting point is required.

21. Fixtures located on pole or at mounting points more than 10’ 0” in height or exceeding 1800 lumens per lamp shall be full cutoff fixtures. All lighting, except those required for security as listed below, shall be reduced to security levels within one hour after the end of business day until one hour prior to the commencement of the next business day.

22. Security lighting at entrances, stairways, loading docks and parking lots is permitted.

23. Motion sensors for security lighting are strongly encouraged and shall not be located as to activate lighting by normal pedestrian and vehicular traffic.

24. All exterior recreational area lighting used for the purpose of illuminating the playing area shall be turned off following the conclusion of the final event of the night. The remainder of the lighting around the field shall be turned off within one hour after the event and remain off until one hour prior to the next event.

25. Lighting in residential areas and open spaces should be limited to 2400 lumens per fixture unless shielded.

26. Accent Lighting:

a. Wall mounted light fixtures are encouraged for wall washing architectural features and lighting plazas, enhanced paving and stairs.

Surface mounted fixtures may be installed on burnished or smooth block.

b. Luminance for a building façade to enhance architectural features may be permitted provided it is approved by

CAFB. Building facades may be illuminated to a maximum of 20 fc as measured on the façade.

c. Lights mounted on poles for the purpose of lighting the building façade are not permitted.

d. Illumination of a flag on a flagpole is permitted provided a narrow spread 39-watt PAR metal halide or 50-watt PAR-halogen lamp or equivalent lamp with narrow spear is used and aimed to only illuminate the top of the flagpole.

e. Accent lights should be used sparingly to create hierarchy of architectural and landscape features.

27. Signage:

a. Luminance of a sign face by a ground mounted fixture shall not exceed 50 fc.

Recommend using lighter lettering on a dark back ground to maximize visibility.

b. Signage that is internally lit shall be limited to a maximum of 1,000 watts.

c. No sign shall be illuminated with fixtures that allow for the unshielded upward transmission of light.

d. All signage lighting shall be turned off within one hour of the end of business day and remain off until one hour prior to commencement of the next business day.

28. CAFB will review lighting plans for compliance with the requirements of this

Standard. All drawings sets shall include:

a. A narrative describing how the design of the proposed lighting, including the fixture types, mounting heights, lamp

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Powers Thomas, April 2016 types, locations, luminance levels, controls and sign lighting complies with the intent of the context and regulation contained in this document.

b. Identification and description of all light fixture locations including whether they are pole, ground or building-mounted.

c. The location of the light fixtures shall also be shown on the Landscape Plan.

d. Description of light-level-reduction controls for each fixture or grouping of fixtures and resulting after-hours light levels.

e. Maximum outdoor luminance levels shall include signage lighting and light spillage from within a building. The impact of this luminance shall be described in the Lighting

Plan narrative.

Designs must comply with UFC 3-550-01; Exterior Electrical Power Distributiont, UFC 3-501-01, Electrical Engineering, NFPA 70 (NEC); Design Safety Requirements for Electrical Systems (29 CFR 1910);

Section 340 of the Energy Conservation and Production Act (42 U.S.C. 6834); and applicable Engineering Technical Letters (ETLs).

Medium Voltage Conductors: Medium voltage conductors shall be copper, 15 kV XLP 133% insulation, type MV105 concentric neutral with PVC jacket or 15 kV EPR, 133%insulation, type MV105, copper tape shield neutral with PVC jacket (#2minimum size). If EPR cable is used, install a properly sized cable shield adapter kit.

Conductor installation plans shall not be included in the specifications.

Primary distribution conductor pulling calculations are required for any exterior underground conductor pulls over 500 feet in length. Conductor lengths longer than 500 feet require 27 SOCES Electrical Engineer and Electrical Superintendent approval. Maximum conductor size is 500 MCM for all mediumand low voltage.

c. Medium voltage conductor terminations and splices shall be of the preformed type only.

Tape type terminations are not acceptable.

d. Medium voltage high potential tests will be done in accordance with IEEE 400.2, “Guide for Testing of Shielded Power Cable Systems using Very Low Frequency (VLF)".

e. All underground distribution pad-mounted switch gear should be of the 4-way Cooper

VFI series (or other manufacturer equivalent meaning that fusing is not the sole sensing mechanism). Switches should also sense and open ground fault conditions. Visible-break option should be selected.

f.

g. Specify 600 ampere dead break connectors with 200 ampere interface bushings for each switch input. Air Insulated (fused or non-fused) technology is not permitted.

h. All primary service shall be in PVC ducts using type conductors with concentric neutral compatible with base system. All duct banks containing medium voltage (over

600 volts) shall be 3000 psi red dyed concrete encased.

i. Primary distribution (along main run, between underground structures and on laterals) will be in duct banks using 5-inch diameter conduits minimum. Primary Distribution Conduits (on laterals) and Secondary Distribution Conduits 4 in.

Secondary distribution conduits refer to the conduit routing from the distribution transformers to service entrance will be 4-inch diameter conduits.This requirement does not apply to secondary circuits originating from an interior panel.

Underground Distribution:

Specific Requirements a.

All concrete pads for pad mounted electrical equipment (switches, sectionalizing cubicles and transformers) shall be cast-in-place concrete pads. Pre-cast pads are prohibited.

b

Exterior Electrical Work

Applicability

1.

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2. Lighting Poles shall be a maximum 30’ anodized medium bronze tapered round steel with shoe box fixture to match existing CAFB standard.

Troop walk and sidewalk lighting shall be accomplished using High Pressure Sodium (HPS) luminaries not to exceed 70 watts. Bollard fixtures shall not be used unless specifically so stated in project definition and approved by

CAFB.

3. Area lighting, where required, shall be accomplished using Electrode-less Induction

(preferred) or HPS luminaries on 30’ (maximum) anodized medium bronze tapered round steel poles. High mast lighting shall be considered for large square parking lots. Use of LED fixtures for area lighting should be avoided and not be used unless approved by the Base Electrical Engineer and the Electrical Superintendent.

4. Transformers:

a. New building service transformer shall be pad mounted, environmentally friendly oil filled, air cooled, copper wound and served by an underground concrete encased duct bank on the primary side. Mounting location shall comply with UFC 3-600-1, Fire Protection Engineering for Facilities, building separation distance criteria.

b. Transformer fusing shall be current limiting fuses combined with load sensing Bay-O-Net fuses.

c. Transformers shall be provided with a no-load tap changer with 2.5% above and 2.5% below rated voltage taps. The high-voltage compartment shall be a dead front construction with load break switching.

d. All transformers shall be feed-through unless otherwise approved. Switches shall be mounted inside the transformer tank with switch operating handles located in the high voltage compartment and equipped with metal loops for hook stick operation.

Adjacent to switches nameplates shall identify switch operating handles and “ON” and “OFF” positions.

e. Transformers installed south east of Runway

04/22 should have dual primary voltage of

12,470V and 4,160V unless otherwise requested and approved by CAFB Electrical Engineer.

f. All pad-mounted transformers shall be screened from view and provide working space in accordance with the National Electric Code.

Screen type shall adhere to the Cannon AFB

Architectural Compatibility Guide. All transformers shall have main breakers to buildings.

5. Manholes: Use copper-tape shielded cables and ensure minimum bending radii of 12 times the overall cable diameter. Use copper-wire shielded cables only where existing manholes are utilized and the minimum cable bending radii of tape shielded cables cannot be realized.

Refer to NEMA WC 74 for cable bending radii. All electrical concrete manholes, hand holes and pull boxes (UFC 3-550-01 APPENDIX B DIRECTIONAL BORING) shall be of the precast type and shall be designed with adequate drainage and waterproofing.

Concrete shall be 4000 psi. The use of load junctions and separable splices shall not be permitted.

Terminations shall be made above ground. Manholes should be limited to airfield clear zones to facilitate maintenance. Exceptions as approved by the CAFB Electrical Engineer.

6. Aerial to Underground Medium Voltage:

Connections shall be made in accordance with Air

Force Joint Manual (AFJMAN) 32- 1080. Pole risers shall be intermediate metal conduit in conformance with National Electrical Code.

7. Metering: All electrical shall be metered utilizing

Schneider Electric/Square D ION 8600 series meters.

All meters shall contain a separate indicator for measuring maximum kilowatt demand and pulse iinitiator. Pulse Initiators shall be solid state and factory installed. Smart meters shall be installed with shorting blocks or test switches to allow removal of the meter. Meters shall be compatible and able to communicate with the CAFB Energy Management Control System (EMCS) and the Automatic Meter Reading System (AMRS).

8. As a minimum use NEMA Type 3S or better enclosures for outdoor non-hazardous

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Interior Illumination Levels

Illumination shall be based and designed in accordance with the requirements of UFC 3-530-01, Design: Interior and Exterior Lighting and Controls, ASHRAE

90.1/ International Energy Conservation code (IECC), and Illuminating Engineering Society of North

America (IESNA). The recommended levels of illumination in foot-candles (fc) are as follows:

Office (ambient lighting) 30 fc horizontal

Office (task lighting) 50 fc horizontal

Storage Areas 10 fc vertical

Conference Rooms (ambient) 30 fc horizontal

Conference Rooms (task) 50 fc horizontal

Utility and Janitor Closets 30 fc horizontal

Communications Rooms 50 fc horizontal measured 3 feet A.F.F

Restrooms (ambient) 5 fc horizontal

Restrooms (at mirrors) 30 fc horizontal

Interior Electrical Work Applicability Designs will comply with the NFPA 70 (NEC); Design Safety Requirements for Electrical Systems (29 CFR 1910); Section 340 of the Energy Conservation and Production Act (42 U.S.C. 6834); UFC 3-501-01, Electrical Engineering; UFC 3-520-01, Interior Electrical Systems; and applicable Engineering Technical Letters (ETLs).

Specific Requirements

1. Conductors: Conductors shall be copper.

Conductors #12 AWG and larger shall be stranded. Minimum acceptable size for power conductors shall be #12 AWG, 75 degree.

2. All panels shall have 20% spares/spaces and spareload capability for future requirements. The 30%spares/spaces include panel spaces containing installed spare circuit breakers and those that are empty (unused) spaces. Spare load capability includes the panel rating and the conductors to the panel from the source. Adjacent multiple panels from the same source at the same voltage may be combined in meeting .the 20% spares/spaces and load requirements. Panels will have a clear three (3) foot unobstructed working zone from ceiling to floor. Dry pack transformers will not be installed over or under panels.

3. Interior Wiring Conduit:

a. Flexible Metallic Tubing FMT, Liquidtight Flexible Nonmetallic Conduit and , electrical nonmetallic tubing are Prohibited. " Metal-clad (type MC) cable is not acceptable for anything other than light fixture whips and then only in lengths less than six feet and shall be so stated in the specifications under 'wiring methods'. Type USE and SE cable are strictly prohibited; conduit must be used for service entrances." Raceways must comply with UFC 3-520-01. Aluminum conduit shall be used for all 400 Hz applications (Design 400 hertz power systems in accordance with UFC 4-121-10N).

b. Provide an insulated green equipment grounding conductor for all circuit(s) installed in raceways.

Conceal raceways above ceilings and in finished areas that have finished walls or finished surfaces.

All interior conduits shall be installed overhead with the exception of the service entrance – transformer to Main Control Panel (MCP) –which shall be under slab.

c. Interior conduits may be installed under facility concrete slab, within concrete second floor concrete slab floor, or under raised floor for specificapplications if approved by the Base Electrical Engineer and the Electrical Superintendent.

4. No exposed conduit or piping shall be permitted on exterior of building surface. Exterior disconnect switches shall be a maximum of 42” above grade. Set-screw connectors and couplings shall not be used.

5. Exposed metal raceways are not permitted in areaswith finished walls.

6. Provide general purpose conveniencereceptacles to meet UFC 3-520-01 minimum requirements or user needs.

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7. GFI receptacles: are required for each receptacle within six (6) feet of plumbing fixtures and in kitchen areas as required by AFI 91-203.One GFI receptacle per closet.

Provide . GFI receptacles at counter height for each counter in toilets such that there is a minimum of one outlet for each two sinks.

Space with counter tops: One for every 4 ft (1.2 m) of counter top, with a minimum of one outlet.

Building exterior: One for each wall, GFI protected and weatherproof.

Kitchen non-residential: One for each 10 ft (3 m) of wall space at the floor line."

8. No equipment grounding conductor shall be installed in empty or low control voltage conduits.

9. Low Voltage Dry Type Distribution Transformers: All new low voltage dry type, copper wire distribution transformers 15 KVA and larger shall comply with

NEMA TP-1 standards for energy efficiency.

10. Exit lights: All EXIT lights shall be of the high intensity

LED type with the following standard features: Die cast aluminum housing; canopy and faceplate with white powder coated finish; dual voltage (120/277V);

polymeric diffuser; white face with 6” high red letters;

single face or double face and directional arrows, as required; and 3 watts maximum (for either single or double face version). The emergency features shall include: Maintenance-free nickel cadmium battery, automatic low-voltage disconnect, reverse polarity and short-circuit protection, AC indicator light, push-to-test switch, and constant current charger. The nickel cadmium battery shall carry a minimum of a 5-year full warranty. Exterior EXIT lights shall be vandal resistant.

11. Fluorescent Lamps: All 4’, T5 with matching rapid start electronic ballasts, rapid start fluorescent lamps, 28 watt. Also, compact fluorescents lights and LEDs shall be given consideration, in concurring with UFC

3-530-01 and applicable Engineering Technical Letter

(ETL) as well for use in hallway lighting. Fluorescent lamps shall be low mercury content.

12. Fluorescent Fixtures: Lighting for general office areas, classrooms, corridors, conference rooms and lobbies shall be provided by 2’ x 4’ recessed fluorescent fixtures incorporating an aluminum parabolic louver with 27 cell, low iridescent, specular silver, parabolic louver.

13. Emergency Lighting: Emergency lighting must be provided IAW the latest Edition NFPA 101.

Normally, emergency lighting is required only for designated stairs, aisles, corridors, ramps, escalator and passageways leading to an exit.

Unit equipment must be circuited to comply with NEC. Do not use fixtures with wall-mounted battery packs. Emergency lights must be integral to installed fluorescent lighting or must be controlled by central battery backup system.

14. Lighting Levels: Design of interior illumination levels shall include evaluation of multi-level switching to provide user-adjustable levels of lighting, as well as dimming and work area lighting. Design

Analysis shall address all options considered to minimize energy consumption while providing effective lighting and document the reasons for choices made. Multi-level switching, using multiple ballasts and separately switched circuits to provide adjustable levels of lighting, is the minimum standard for all facilities. An example is having one tube on one ballast and two tubes on another ballast in a 2’x 4’ troffer so that one, two or three bulbs in a 3-bulb system can be selected. Another design tool is to provide additional switches to sectionalize the room in addition to level control. Other design considerations include task lighting, strategically placed down lights, dimmers, photoelectric controls, occupancy sensors, LEDs, solar lighting and day-lighting design all giving users flexible control of their workspace lighting and conserve energy.

Lightning Protection Lighting Protection System (LPS) requirements will be IAW UFC 3-575-01, Lightning and Static Electricity Protection Systems; NFPA 780, Standard for the Installation of Lightning Protection Systems;

and any applicable ETLs.

Specific Requirements

1. Lightning protection should be considered on

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Powers Thomas , April 2016 all new facilities. Air terminals are preferred.

Clamp-type connectors shall only be used for the connection of the roof conductor to the air terminal and to the guttering. All other connections, bonds and splices shall be done by exothermic welds or by high compression fittings. Down conductors shall be protected by placing in PVC conduit for a minimum distance of

72 inches above finished grade level.

2. Copper air terminals and conductors shall be used.

3. Due to CAFB environmental conditions all air terminals and cable clamps shall be attached to the facilities using non-adhesive attaching methods.

4. Provide proof of compliance with requirements of Underwriter Laboratories (UL). The label of or listing in UL Electrical Construction will be acceptable.

5. The contract for a lightning protection system project, or for any project on a facility containing a lighting protection system, shall require an LPS inspection prior to acceptance. The LPS shall be inspected by a commercial, third-party inspector whose sole work is lightning protection, and shall be certified by this third-party inspector as compliant with AFI 32-1065 and NFPA 780, in that priority order. A UL certification on its own shall not be adequate for acceptance of any Air

Force project. Projects calling for an LPS addition to an existing LPS project shall consider the configuration of the final LPS in the initial design. Projects of this type shall ensure the final

LPS as a whole is compliant with AFI 32-1065 and NFPA 780, in that priority order. The same third-party inspector requirements shall apply.

6. The final inspection report shall include:

a. Location of ground rods;

b. The continuity test of grounding system;

c. The resistance to ground is not in excess of

25 ohms; and

d. Soil condition at the time of taking test.

Contracting Package

Responsible 27 SOCES engineers shall select which study(s) and drawing(s) to be done for each electrical project.

1. Design Analysis - Minimum requirement are follows:

a. Short-circuit and fault calculations study;

b. Voltage (V) drop analysis study;

c. Load calculations for new and existing;

d. Lighting Protection System (LPS) requirement analysis IAW UFC 3-575- 01, Lightning and Static Electricity Protection Systems, and NFPA 780, Standard for the Installation of Lightning Protection Systems, Annex L criteria;

e. Coordination study - a minimum of two coordinated ground fault level studies are required for any 480 V system with electric service of 1000 amps or more;

and

f. Foot-candle analysis calculations.

2. Electrical Plans – Accurately scaled showing the following minimum requirements:

a.All exterior electric from switch to pad-mounted transformer to electric service entrance;

b. All communication lines;

c. Conductor and conduit sizes;

d. Reflected ceiling plan;

e. Lighting plan(s);

f. Power plan(s) and panel schedule(s) showing minimum 30% spare space and spare load in each panel;

g. Communication (Voice, data) plan with riser diagram;

h. Fire alarm plan with fire alarm riser diagram;

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i. Details showing grounding, trenching and backfilling, and pad mounted transformers;

j. Poles including grounding and other details;

k. Electric power riser diagram, including wire and conduit sizes;

l. One-line diagram, showing new, existing, the coordination, and at least three fault points;

m. Load calculations and tabulations; and

n. Photometric Plans for external areas verifying compliance with Base Standards and

LEED requirements, if applicable.

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