Design and Construction Standards

Electrical

Transformers

Pad-mounted transformers shall have primary and secondary specifications as follows:

Primary:
	Voltage:	12470 GRDY/7200
	BIL:	95 KV
	Bushings:	600 Amp Dead Break
	Elbows:	600 Amp DB/200 Amp Lb
	Fuses:	Expuldion series D with current limiting
	Switches:	Loop feed/closed transition
	Tap Changer:	For de-energized operation
	Lightning Arrester:	Under oil/integral
	Drain/Sampler:	Yes
	Connection:	Delta
Secondary:
	Voltage:	480Y/277 or 208Y/120
	BIL:	30 KV
	Bushings:	600 Volt
	Spades:	2 Holes above normal
	Oil Gauge:	Yes
	Temperature Gauge:	Yes
	Drain Sampler:	Yes
	Pressure Gauge:	Provisions for
	Minimum Size:	24" x 24"
	Connection:	Wye
Taps:
	1 A	-5%
	2 B	-2.5%
	3 C	12470 Volts
	4 D	+2.5%
	5 E	+5%
Oil: Mineral

Transformers shall have adapters to 200 Amp loadbreak.

Transformers should be provided with a minimum of 25% excess capacity to accommodate future growth.

Preferred Mfg.: Cutler Hammer, General Electric, Cooper, Square D

Dry-Type Transformers

Transformers for general use shall be ventilated dry-type, delta-wye connected, with taps. Smaller transformers shall be encapsulated type. They shall be mounted on vibration isolator pads on four (4) inch concrete pads. Smaller transformers may be wall or trapeze mounted. Provide a means to remove dissipated heat.

Wiring

Interior circuit wiring shall be stranded copper THHN type wire. Solid wire is prohibited on motorized equipment connections. Georgia Southern prefers all building electrical wiring be copper stranded in lieu of solid copper. Grounding conductors shall remain bare solid copper as required by the NEC.

Starters

Provide a motor disconnecting means at each motor. Where motors are not in sight of the associated controller or are more than 50 feet from the controller, each starter shall as a minimum include a "run" light and a hand/off/automatic control.

Preferred Mfg.: Square D, Cutler Hammer, Furnace

Panels

Panelboards shall have copper bussing and bolt-on breakers. Provide schedules on drawings including all circuits, connected, demand loads, mounting, ratings, interrupting rating, spaces and spares.

Preferred Mfg.: Square D, ITE, Cutler Hammer

Disconnects

Exterior disconnects shall be rated at 65,000 A.I.C. ground tested at 25 ohms or less. Interior disconnects shall be rated at 22,000 A.I.C.

Preferred Mfg.: Square D, Cutler Hammer, GE

Electric Meters

All new and renovated facilities will have an installed electric digital meter. See Division 2, Chapter 5 for more information.

Fire Alarm Systems

The fire alarm system (F/A) shall be coordinated with the campus standard and shall include the options listed herein:

F/A shall be connected to campus central monitoring station at Public Safety Office which is a Sur-Gard MLR 2E Receiver. Coordination with Georgia Southern Telecommunication Office is necessary to connect the communicator to Public Safety and allow the system to be tested and operate properly(See Page 2.3).

F\A shall be interconnected to the building elevator or conveying system.

Where magnetic hold open devices on doors are used the F/A shall automatically release such devices for proper smoke and flame protection.

All remote control and annunciator panels shall have proper zone and area lights indicating alarm or trouble areas.

The F/A shall be a fully addressable type system and shall include all, programs, computers and read devices to make the system complete and programmable by Georgia Southern University.

The user will not be required to furnish any such computers or printers to access F/A.

A copy of the detailed as-built drawings and programs will be provided to the users at the turnover training session.

Preferred Mfg.: Edwards, Johnson, Notifier, Silent Knight

Lighting

The power consumption on the campus is greatly attributed to the lighting load of the facilities and parking lots. There are on-going projects on campus to upgrade existing lighting ballasts and bulbs to more efficient units. Georgia Southern has concluded that the following criteria shall be the campus standard. The A/E may propose alternatives to these standards in the interest of greater efficiency and costs savings without compromising quality.

Both exterior and interior lighting shall be wired into a solid state lighting control panel or occupancy sensors and contactors.

Emergency Lights
	In residence halls specifically and generally in other areas, emergency lights shall consist of troffers or equivalent area lighting wired to operate continuously with no on/off switch and with battery back-up to operate without power. These lights shall have a red indicator light for low battery located on the surface of the fixture easily visible to the service technician. Other emergency lighting shall be typical wall mounted directional battery powered emergency lights. These units shall have a self diagnostic feature with a 90 minute test.
	Preferred Mfg.: Central Em Lighting, Dual-Lite, Sure-Lite, Lithonia
Parking and Exterior Lighting
	Parking and exterior lighting fixtures shall be High Pressure Sodium. Harsh building exterior flood lights shall be prohibited. Exterior lighting shall be controlled by photocell. The area lighting shall be on a dual circuit with alternating light fixtures on alternating circuits. This will permit selective lighting to be turned off at a predetermined time in the early morning hours. The override shall control lighting by zones. Entry exterior lighting shall be controlled solely by photocell. Poles shall match existing campus standard per application. The A/E should coordinate this with Georgia Southern University. All underground electrical wiring shall be in conduit and all underground pull boxes or junction boxes shall be in road grade access boxes with a removable cover at grade. Lighting fixtures shall be accessible. Fixtures set in permanent settings such as plaster and concrete shall be prohibited unless they are fully accessible and easily removable and replaceable. See Site Work (Site Lighting)
	Preferred Mfg.: Halophane, General Electric, Crouse-Hines, Cooper
Interior Lighting
	Interior lighting shall be fluorescent T-8 tubes with solid state electronic ballasts. Preferred fixtures are 2' x 4', 3 tube with parabolic troffers in office spaces and non-glare parabolic troffers in computer rooms. Lighting in classrooms shall be three tube recessed lighting with prismatic lens. The lighting systems in classrooms shall have occupancy sensors and be dual switched for (1) center bulb and (2) two outer bulbs creating three lighting levels. These appear to be the best combination of energy efficient lighting and has become the Georgia Southern campus standard. The use of incandescent lighting in the interior is strongly discouraged. Quartz bulbs are not acceptable. Compact fluorescent with solid state electronic ballasts are acceptable. Occupancy sensors should be used in classrooms and may be used in offices for additional lighting control and energy conservation. Lights in custodial rooms, storage rooms, mechanical rooms, electrical rooms, etc., will be provided with a lens to prevent damage to the lamps from brooms, mops or other equipment. Except for mechanical rooms, electrical rooms and other rooms where safety is a factor, these lights will be on a timer to turn off after the user has left the area.
	Preferred Mfg.:
		Fixtures: Lithonia, Metalux, General Electric, Kim Lighting, Cooper
		Electronic Ballasts: Magnetek, General Electric, Motorola
		Lamps: Phillips 700 series Alto with CRI 478 and color temperature of 3,500 degrees Kelvin or equivalent.
Exit Lights
	Exit lights shall be LED type lights.
	Preferred Mfg.: Dual-Lite, Sure-Lite, Light Guard

Emergency Generator

See Site Work (Emergency Generators). Buildings will have a minimum of one (1) emergency generator panel per floor.

Preferred Mfg.: Onan-Cummings, Caterpiller, Cohler

Transfer Switches

Preferred Mfg.: Cummings, Cutler-Hammer, ASCO

Telephone, Data, and CATV

The telephone, data and CATV network systems shall be supplied and installed by the contractor as a complete, fully tested and operational systems at the date of acceptance of the facility. The systems shall be designed to meet or exceed the established Georgia Southern standards. These systems shall include the building systems and the infrastructure to bring these systems to the facility.

The main communications room (MDF) shall have a 8'H x 8'L x ¾" plywood backboard with the bottom at 6" A.F.F. for each system: telephone ,data and CATV. The satellite communications rooms (IDF's) shall have as a minimum a 4'x4' backboard for each service required. A No. 6 bare copper grounding conductor shall be extended from the electrical service ground to the backboard and have sufficient slack for termination. The backboard should not be mounted in an electrical closet. At least one communications closet per 15,000 sq ft of building is required. The cable distance from the communications closet and the telephone/data modular jack shall not exceed 250' in cable length; therefore additional communication rooms may be required. A dedicated double duplex electrical outlet shall be mounted in each communications room for the electrical/electronic equipment needed to make the systems complete. Georgia Southern requires one dedicated electrical outlet for each backboard installed.

Two 2" data, one 2" CATV and one 4" telephone conduits shall be installed from each communications room(IDF) to the main distribution frame (MDF) in the communications center room of the facility.

In addition, two 2" data conduits, one 2" CATV conduit and one 4" telephone conduit shall be installed from each the MDF communications backboard(s) to at least 25 feet outside the exterior of the building underground and connected to the vendors service and or to the data or signal origination center(s).

Communications and data cables shall be run from a conduit that extends to just above the individual wall to a multiple compartment cable tray or "j" hooks which will carry the cable to the communications room. This cable tray will be dedicated to communications wiring. No electrical wiring shall be installed in it.

The maximum length of any cable shall not exceed 250 feet.

Provide three data cables and one voice cable for each location shown for each computer\telephone outlet. Cables shall be UTP and data shall be category 6 for both voice and data. Category 6 cables shall be blue. Siamese type cables are discouraged. Terminate cables at jacks on the user end and modular patch panels and 110 blocks on the other end. The user end shall consist of a quad jack (one telephone port and three data ports on jack face RJ45 and R11). Data is terminated on patch panels only and voice on 110 blocks only.

Patch panels shall be equal to 'Ortronics ELP 5' modular panels. Provide 24 port panels for data and telephone. Secure free standing racks to backboard, Provide high capacity D-Ring type horizontal wire management panels and designation strip kits for each panel. The contractor shall provide a layout drawing of the backboard for the engineers' approval. The layout drawings shall accommodate telephone 110 blocks, data racks and data patch panels, fiber optic terminations, fiber distribution panel(s), fiber multiplexer to modular RJ45 concentrator(s) and provide 75% for future expansion.

Identification will be in accordance with Specification 16726 which is Appendix D.

Each facility shall be serviced with Fiber Optic cable. This cable shall consist of at least one 18 fiber cable with 12 fibers 62.5/125 micron multi-mode fibers and 6 single mode fibers. This cable shall be installed in an underground concrete ductbank from the Marvin Pittman Administration Building to the facility location. The ductbank specifications including manholes and handholes will be provided to the engineer/designer by Georgia Southern and reviewed and approved by the University. The duct bank system shall become a part and included in the construction contract to make the system complete and operational.

Terminating requirements for data cables shall be in accordance with Georgia Southern standards and coordinated with the University's Information Technology (computer) Services (IT Services)Department. The cables shall be tested at both ends for their complete length including from the modular jack to the termination at the campus data center. The readings shall be submitted to Gerogia Southern University for review by IT Services for acceptance prior to requesting a final inspection on the project. Where the readings are not acceptable; splices and/or terminations shall be reworked to make them acceptable. Telephone cables may be spliced; however, data cables can not be spliced. Splices are not acceptable in manhole/handholes.

CATV system shall be networked within the facility to provide (1) outlets in academic buildings to meet the program statement and (2) outlets in residence halls in each student room, office, lobby, kitchen, activity rooms and other areas as required by the program statement. The signal shall be supplied by either a building antenna, satellite dish or local CATV service. This signal service shall be coordinated with Georgia Southern. In either case the system shall be fully operational and ready for use by the tenant when the facility is accepted by the University.

All cables shall be plenum rated and clearly marked as such.

Chapter 14

Index