05. Attachment KAFB Low and Medium-Voltage Electrical Design and Equipment Requirements.pdf

G26 Kirtland AFB IFS Electrical Page 1 of 10

Kirtland Air Force Base Installation Facilities Standards (IFS)

G26 Kirtland AFB IFS Electrical

Comply with Air Force Corporate Standards for Overview:

http://afcfs.wbdg.org/index.html

Summary of Sections in this Supplemental Document:

26 05 13 Medium-Voltage Cables 26 05 19 Low-Voltage Electrical Power Conductors and Cables 26 05 26 Grounding and Bonding for Electrical Systems 26 10 00 Medium-Voltage Electrical Distribution 26 12 00 Medium-Voltage Transformers 26 13 00 Medium-Voltage Switchgear 26 20 00 Low-Voltage Electrical Distribution 26 32 00 Packaged Generator Assemblies 26 41 00 Facility Lightning Protection 26 51 00 Interior Lighting 26 56 00 Exterior Lighting Appendix A: PMH Switches

Related Requirements Listed Elsewhere 21 00 00 Fire Suppression 23 00 00 Heating, Ventilating, and Air Conditioning (HVAC) 25 00 00 Integrated Automation 27 00 00 Communications 28 00 00 Electronic Safety and Security 33 00 00 Utilities

26 00 00 Electrical: General Requirements

1. This document is provided as a supplement to the Kirtland AFB IFS. If there are any discrepancies between this Supplemental Document and the requirements of the IFS, the IFS will govern.

2. This Supplemental Document supersedes all previous versions of design standards documents.

3. Revision History:

Revision Date Change Summary

0 TBD Initial submission

1 03Feb2023 Update POC’s, stringent regulations

2 24Oct2024 Update requirements

3 21Apr2025 Adopted IFS-UFGS Format:

G26 Kirtland AFB IFS Electrical (Facility Electrical, Medium and Low Voltage) http://afcfs.wbdg.org/index.html

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G33 Kirtland AFB IFS Utilities (Electrical Distribution, Substations and Transformers, and High Voltage)

4. Project specifications must reference all applicable Air Force Regulations and Standards (UFCs, AFIs, AFMANs). This includes projects managed by the US Army Corps of Engineers (USACE).

5. New construction must meet or exceed all current UFC, AFI, AFMAN, NEC and NESC Codes.

6. All construction submittals and design drawings must be routed through the CE Operations Engineering Office, 853-1817, and the CE Exterior Electric Shop, 846- 8145, for review & comment.

7. Kirtland AFB has a “No Energized Work” policy. Contractors are responsible for installing safety grounds prior to working on the de-energized portions of Kirtland’s primary electrical distribution system. KAFB’s CE Exterior Electric Shop will perform all switching to de-energize these lines.

8. 10 business days at a minimum is needed to de-energize any portion of Kirtland’s primary electrical distribution system, the contractor must submit a form AF-103 to the BMC’s R&O Department.

9. Primary contact at the BMC’s R&O Department is Matthew Cayo at 505-712- 6571 or matthew.cayo.ctr@us.af.mil

10. Secondary contact at the BMC’s R&O Department is Stanice Elliott at 263- 2750 or stanice.elliott.ctr@us.af.mil

11. A Scheduled Power Outage email will be sent out notifying “Start Time” – “End Time” – “Buildings Impacted.”

12. All new installations and modifications must connect to the existing 15kV system when available and must not be allowed to use the 5kV system, even if more cost effective.

13. The first device out of any substation, on a feeder, must be an S&C PMH-style, or equivalent, pad-mounted switch. This device will be used to tie to another feeder or contain spare switch bays for future installations.

14. All new electrical equipment installations must have its protective devices coordinated with KAFB’s current upstream fault protection devices.

15. The coordination study provided to the Base at the completion of the project must be compatible with KAFB’s current software. As of Oct 2024, this was Easy Power, Version 11.0.1.8039.

16. One (1) copy must be provided to the CE Operations Engineering office, 853-1817, and one (1) copy to the CE Exterior Electric Shop, 846- 8145.

17. PNM Distribution Standards are preferred for medium voltage construction, but usage must be reviewed and approved by the CE Operations Engineering office, 853- 1817, and the CE Exterior Electric Shop, 846-8145.

18. Removal of old equipment and off-site disposal will be the responsibility of the Contractor.

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19. As-Built Drawing Files must be in AutoCAD 2018, or 2014. One (1) copy of files that show modifications to the primary distribution system, must be provided to the CE Operations Engineering office, 853-1817, and the CE Exterior Electric Shop, 846-8145.

20. Refer to IFS supplemental document G33 Kirtland AFB IFS Utilities for electrical utility transmission and distribution, utility substations, utility transformers, and medium-voltage utility switchgear and protection devices.

21. Energy Conservation Initiative:

a. Energy performance must meet or exceed the requirement of UFC 1-200-02, High

Performance and Sustainable Building Requirements.

1) New buildings must be greater or equal to 30 percent more efficient than ASHRAE 90.1

-2007 and renovated buildings must strive to be greater or equal to 20 percent more efficient.

2) When cost justified and applicable to building type, follow ASHRAE 50 percent Advanced Energy Design Guide recommendations

3) New buildings must be certifiable for LEED Silver minimum.

b. Utilize Energy Star qualified products.

c. Use variable speed fans and pumps unless other alternative provides a lower lifecycle-cost or special system constraint require constant speed equipment.

22. References:

a. The latest versions should be used. When a version is listed below, it is to assist with locating the applicable reference:

1) UFC-03 501 01 – Electrical Engineering

2) UFC-03 520 01 – Interior Electrical Systems

3) UFC-03 550 01 – Exterior Electrical Power Distribution

4) UFC-03 560 01 – O&M Electrical Safety

5) AFMAN 32 1062 – Electrical Systems, Power Plants and Generators

6) AFI 32 1064 – Electrical Safe Practices

7) AFMAN 32 1065 – Grounding and Electrical Systems

8) Other UFC and Unified Facilities Guide Specifications (UFGS) references as noted in the items below.

b. It is mandated that, prior to beginning project design efforts, the Designer-of-Record (DoR) and Prime Contractor familiarize themselves with the following Chapters of the above-referenced documents and utilize them in their work:

1) UFC-03 501 01 - Electrical Engineering; Chapters 1, 2, and 3.

2) UFC-03 550 01 chg3 (2019) - Exterior Electrical Power Distribution; Chapters 1, 2 and

Appendix C

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26 05 13 Medium-Voltage Cables

1. 15kV, EPR or XLP, 133% insulation level. Tape shields are acceptable only if installed with a separate insulated ground conductor and/or a full-sized insulated neutral. Metallic sheathed cable (Type MC) or Armored Cable (Type AC) will not be used; exceptions must be considered on a case-by-case basis. Aluminum conductors must not be used.

Ref.: UFC-03 550 01 chg3 (2019); Sections 3-11.1, 3-11.2, 3-11.8, & 3

26 05 19 Low-Voltage Electrical Power Conductors and Cables

1. Copper (no aluminum) with THHN/THWN installation. Minimum wire size will be #12. All buildings with computer loads will have oversize neutral or a full size neutral for each phase conductor.

2. Aluminum conductors must not be used.

Ref.: UFC 3 520 01, Sec. 3-6.3 and UFC 3 550 01, Sec. 3-10.4 & 3-11.8

26 05 26 Grounding and Bonding for Electrical Systems

1. Ground rods, where used, will be 3/4” copper clad, minimum length of 10’. Ground resistance will normally be less than 25 Ohms though certain AF facilities may require ground resistance to be less than the minimum specified in the NEC. Transformer grounds will be a 4-rod grid, 2 feet from the pad.

2. All ground rod connections below ground will be exothermic or high compression irreversible connectors. Grounding for lightning arrestors on distribution lines will be 15 ohms or less.

Equipment ground conductors will be an insulated conductor except lighting fixtures may be grounded through conduit.

Ref.: UFC 3 520 01, Sec. 3-11 and UFC 3 550 01, Sec. 3-14

26 10 00 Medium-Voltage Electrical Distribution

1. Electrical Distribution Manholes:

a. KAFB prohibits manholes to be installed indiscriminately in the primary distribution system. When cable lengths and routings are such that a project does require a ‘pull-point’, the following criteria must be met.

b. Vaults or sectionalizes are required over traditional manholes. Vaults will be precast concrete set at-grade with a traffic rated, rectangular, two-piece galvanized, spring-loaded, lockable, ‘clamshell’-type access lid. Vaults depth will not be more than 48 inches to bottom. Round entry rings and lids are to be avoided. Manhole access lids must be bonded to ground via a ground strap tied to the manhole ground rod. All manholes will be grounded and will have an appropriately sized ground cable around the inside of the manhole. A ground rod will be installed outside the manhole, with the grounding conductor penetration no lower than 18 inches below the top of the manhole. Access lids will be clearly marked “Electric” in a permanent method. All manholes will be supplied with cable racks; high strength plastic (non-metallic) racks are preferred. All manholes will be provided with a sump with a removable cover. This is also recommended for communications manholes.

c. Traditional manholes, when specified, are generally under UFGS division 33.

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2. Poles:

a. Do not use pole-platform mounting (two-pole structure or H-frame). Ref.: UFC-03 550 01 chg3 (2019); Section 3-10.4.3

b. 46kV or above: Metal Poles will be installed.

c. Distribution Poles will be cross-arm construction, with a center pin insulator.

d. All poles that are touched at any point during a project, must be replaced, including new hardware, guy wires and anchors. All poles will be independently labeled with permanent signage to identify the pole number using the existing numbering system.

e. Poles that do not have an ID, must be labeled and routed through the CE Operations Engineering office, 853-1817, and the CE Exterior Electric Shop, 846-8145, for review &

3. Duct Banks:

a. All underground primary circuits must be concrete-encased Sch. 80 PVC conduit, with spare and include phase identifying tape, cable identification labels, and have a metallized marking tape installed 12” above the new duct bank. Concrete should be dyed red in color.

Direct burial of underground primary distribution cables is not approved.

b. Ref.: UFC-03 550 01 chg3 (2019); Sections 3-11.2 and 3-12

4. Conduit:

a. EMT or PVC may be used where permitted by NEC. Galvanized rigid conduit or intermediate metallic conduit may be used for all locations. Conduit for underground primary distribution will be no less than 5” schedule 80 PVC with spare concrete encased in red dyed concrete. For transitions from underground to aboveground, the first 10 ft. must be Rigid Galvanized Metal (RGS).

b. The below grade portion of RGS will be protected with factory-applied PVC coatings, two layers of 10-mil PVC pipe wrap tape, or two coats of asphaltic paint (tar) applied after assembly.

c. All underground primary distribution conduits must be encased in red dyed concrete. Base preference is for all outside conduit/conductors to be placed underground.

Ref.: UFC 3 520 01, Sec. 3-6.2 and UFC 3 550 01, Sec. 3-11.2

26 12 00 Medium-Voltage Transformers

1. Pad Mounted Transformers: At a minimum, they must have:

• a liquid level gage,

• pressure-vacuum gage,

• liquid temperature indicator,

• drain and filter valves,

• pressure relief device,

• (5) full capacity voltage taps, G26 Kirtland AFB IFS Electrical Page 6 of 10

• bay-o-net fusing,

• primary surge arresters,

• high-voltage load break switch,

• dead front primary, and

• Nameplate

a. The color must be Sand Dollar, Sherwin Williams #6099.

b. New pad-mounted transformers installed at renovated facilities currently being fed from

5kV feeders should have dual-voltage primaries (12,470V:4,160V).

c. New pad-mounted transformers must be labeled and routed through the CE Operations Engineering office, 853-1817, and the CE Exterior Electric Shop, 846- 8145, for review &

d. Transformers must not be used to loop-feed other transformers on KAFB because it makes maintaining the piece of equipment difficult with no visibility.

Ref: UFC-03 550 01 chg3 (2019); Sections 3-2.4, 3-5.1 – 3-5.6, & 3-14.1 - 3-14.3

26 13 00 Medium-Voltage Switchgear

1. Pad-Mounted Switches: All pad-mounted switches will be air-insulated and fused; vacuum-type is also acceptable. Switches must be of a dead-front design (S&C PMH-style, or equivalent), with 24” housing extensions, and cable fault indicators with the sight glass on the exterior of the housing. New pad-mounted switches must be labeled and routed through the CE Operations

a. The color must be Sand Dollar, Sherwin Williams #6099.

Ref.: UFC-03 550 01 chg3 (2019); Sections 3-2.4, 3-7

2. Sectionalizers:

a. Note: Due to the excessive installation of sectionalizers in the past, KAFB’s primary distribution system has become increasingly incapable of isolating individual sections of the system. For this reason, it is strongly recommended and requested that designs include the replacement of existing sectionalizers with pad-mounted switches whenever possible.

New pad-mounted sectionalizes must be labeled and routed through the CE Operations

b. If installation of a sectionalizer is warranted and approved, it will have fused load side taps, 24” housing extensions, cable fault indicators with the sight glass on the exterior, elbow connections, penta-head bolts, and a padlock slot.

c. The color must be Sand Dollar, Sherwin Williams #6099. Ref.: UFC-03 550 01 chg3 (2019);

Sections 3-2.4, 3-8 & 3-10.9

3. Concrete Pads (for equipment detailed above):

a. Concrete pads may be prefabricated concrete or cast-in-place concrete. In either case, if the pad contains a ‘trough‘ for conduit access, this trough must be covered with expanded

G26 Kirtland AFB IFS Electrical Page 7 of 10 metal grating or filled with non-shrink grout to prevent the incursion of burrowing animals into the termination compartments. Filling with non-shrink grout is the method preferred by Kirtland AFB.

b. The top of outdoor switchgear pads should be elevated a minimum of 4 inches above grade. Ref.: UFC-03 550 01 chg3 (2019); Section 3-12

c. Note concrete pads are generally specified under UFGS division 03 30 00 for cast-in-place concrete (equipment bases).

26 20 00 Low-Voltage Electrical Distribution

1. Service Entrances and Distribution Equipment:

a. New electric service entrances will be underground in conduit. 600-volts and below rated cables may be in direct buried conduit. All new service transformers will be pad-mounted type. Transformer service will be underground to service disconnect.

Ref.: UFC 3 520 01, Section 3-2

2. Panelboards:

a. Bolt-on breakers will be specified. Provide 25 percent, minimum of 4, spare 20 Amp single pole breakers and an equal number of spaces. Provide at least two 1” conduits to above ceiling at panel location. Use only copper buses. Provide 200 percent neutral bus where required.

Ref.: UFC 3 520 01, Sec. 3-2.5

3. Revenue Metering:

a. Electrical Meters: Exterior (Honeywell/Elster A3TL) Interior (Schneider PM5560). All new and modified electrical installations will have metering installed by the contractor. KAFB does not supply parts or meters. Electric Meters must meet Department of Defense cybersecurity and technical requirements that will be provided by the Civil Engineering Operation’s Utility Manger.

b. Electric Meter Installation for DOD/Air Force Facilities: Exterior (Honeywell/ Elster A3TL) capable of connecting and communicating advanced metering infrastructure operating at 902 MHz to 928 MHz radio frequency. Internal metering Schneider PM5560 Interior (Schneider PM5560) connected and communicating within the AF Cybersecurity protocols.

All new meter installations for Department of Defense and Air Force Facilities will include the installation of new properly sized split or solid core current transformers (CTs). All new meter installations will be connected from the meter to a RJ45 jack in the mechanical room, to a patch panel in the communications room, and then to the Air Force switch in the communications.

c. New Meter Installation for Non-DOD/AF facilities: If facility requires a new transformer providing power, transformer will have a Honeywell Elster type AT3L meter installed capable of connecting and communicating advanced metering infrastructure operating at 902 MHz to 928 MHz radio frequency. Recommended Internal metering Schneider PM5560. With the capability to be connected from the meter to a RJ45 jack in the mechanical room, to a patch panel in the communications room, and then to the Air Force switch in the communications.

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d. A temporary electric meter will be required to be installed at each construction site (for reporting utility consumption during construction).

Ref.: UFC-03 520 01 (2015); Sec. 3-5 (as it relates to AMRS projects) and UFC 3 550 01, Sec. 3-

4. Automatic Fire Detection and Alarm System:

a. Refer to IFS supplemental document G28 Kirtland AFB IFS Electronic Safety and Security.

26 32 00 Packaged Generator Assemblies

1. Emergency Generator:

a. Fuel for emergency generators must use diesel only with fuel on site to operate a minimum of 72 hours. Use caution during design to ensure that generator fueling access is included. Base Fuels refueling vehicles have a limited hose length and adequate fueling access (within 50 feet of the tank) is critical. Auto transfer switches will be 4-pole only (switched neutral), with maintenance bypass isolation. No exercise timer. Transfer switch to operate by linear solenoid.

b. KAFB has a Manufacturer Standardization signed by the BCE in 2022 for Cummins/ONAN.

KAFB preferred Manufacturer for Transfer Switches is Cummins.

c. All stationary generators are required to have a 20.11.41 NMAC Authority to Construct (ATC) permit from the Albuquerque Environmental Health Department (AEHD) Air Quality Division (AQD). The ATC permit must be in place prior to “commencing construction” (20.11.41.7.C NMAC and prior to purchasing the unit). It may take as long as seven (7) months from the initiation of the permit application preparation process to receive a permit from the Albuquerque Environmental Health Department (AEHD) Air Quality Division (AQD). The project is expected to pay for the cost of preparing the permit application and the associated AEHD air quality permit fees. The organization must also plan to pay emission fees for the generator on an annual basis. Any generator purchased for use on KAFB must have the appropriate emission certification from the EPA. Generator engines are subject to New Source Performance Standards (NSPS) which require engines to meet strict emission standards. Once the generator is in place and in operation, the tenant is responsible to maintain the equipment until it becomes Real Property Equipment. Maintenance must be according to the manufacturing specification and operation of the generator must be in accordance with the conditions of the air quality permit. Ref.: UFC-03 540 01

26 41 00 Facility Lightning Protection

1. A Lightning Protection System will require a Risk Assessment to justify if a facility actually “needs” or just “wants” a Lightning Protection System installed. Authority having jurisdiction (AHJ) will decide based on local conditions, strike density, and other variables which might make an LPS necessary for one military installation where it would not be necessary for a military installation at another location, even if using the same design. Depending on location, if direct strikes are not probable, and if assets are less than the cost of the LPS and its maintenance, use surge protective devices to provide protection for indirect strikes and voltage surges from other sources. SPDs will also protect against switching surges from power outages and restorations of power.

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Ref.: UFC 3 575 01, Sec. 3-1.1.1 and UFC 3 575 01, Sec. 3-1.1.3

2. KAFB only requires Lightning Protection Systems for Nuclear-Capable Weapons and Munitions Storage and Maintenance Facilities.

3. Provide UL 1449 listed lightning/surge protection for all phase and neutral conductors at service entrance and branch panels for the appropriate category as defined in ANSI C62.1, and C62.45 and tested as defined in ANSI/IEEE C62.41. Test Wells will be installed at ground level points to access ground grid. Periodic testing of lightning protection systems is required by DoD.

4. Engage a qualified installer to design and install the lightning protection system. Installer must have either a current LPI Master Installer certification or current UL listing (Category OWAY) for Lightning Protection Installation. The installer must have successfully completed not less than 5 lightning protection installations of similar scope to this project. KAFB will inspect the lightning protection system for acceptance in accordance with AFMAN 32-1065, NFPA 780 and UL 96A. Provide products that are NRTL listed for lightning protection use.

5. Testing of the lightning protection system must be by a certified third-party testing agency, who is not affiliated with the designing or installing contractor. This certified third-party testing agency will be the BMC.

Ref.: UFC 3 550 01, Sec. 3-10.6 and UFC 3 575 01.

26 51 00 Interior Lighting

1. Lighting Efficiency and Energy Conservation:

a. Occupancy/Vacancy sensors: Occupancy or vacancy sensors will be of the dual-technology type. Use occupancy or vacancy sensors on:

1) All lighting systems with a connected load greater than 1,000 watts.

2) All Bathrooms

3) Any area that is frequently unoccupied during duty hours.

2. Incandescent lights:

a. ETL07-2007 bans incandescent lights. Interlock dimmer system with conventional fluorescent lights to prevent both lighting systems from operating simultaneously.

3. Exit signs:

a. Use LED type exit signs.

26 56 00 Exterior Lighting

1. Non-security outside lights:

a. Interconnect outside lights and photocells with the EMCS system. Program the lights to shut off when not needed.

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Appendix A: PMH Switch Models

End of Document