Attachment Q - Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM.pdf

P131 Communications Center eProjects No.: 1615269 NSA Souda Bay, Greece

SECTION 26 20 00

INTERIOR DISTRIBUTION SYSTEM

08/19

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN/CENELEC)

EN 10346 (2015) Continuously hot-dip coated steel flat products for cold forming. Technical delivery conditions

EN 50085-2-1 (2006) Cable trunking systems and cable ducting systems for electrical installations - Part 2-1: Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings

EN 50174-2 (2017) Cabling Installation - Part 2:

Installation Planning and Practices Inside Buildings

EN 50173-1 (2018) Information Technology - Generic Cabling - Part 1: General Requirements

EN 50525 Electric cables - Guide to use for cables with a rated voltage not exceeding 450/750 V (U0/U)

EN 50310 (2016) Telecommunications Bonding Networks for Building and other Structures

EN 60269-2 (1995) Low-voltage fuses - Part 2:

Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application)

EN 60320-1 Appliance couplers for household and similar general purposes - Part 1: General requirements

EN 60423 (2007) Conduit systems for cable management. Outside diameters of conduits for electrical installations and threads for conduits and fittings

EN 60439-1 (2007+A2:2014) Low-voltage switchgear and controlgear. General rules

EN 60529 (1992+A2:2013) Degrees of protection provided by enclosures (IP code)

SECTION 26 20 00 Page 1 24 September 2021

EN 60669-1 Switches for household and similar fixed-electrical installations - Part 1:

General requirements

EN 60670 Boxes and enclosures for electrical accessories for household and similar fixed electrical installations

EN 60811-100 Electric and optical fibre cables. Test methods for non-metallic materials. General

EN 60947-2 Low-voltage switchgear and control gear - Part 2: Circuit-breakers

EN 60947-3 Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

EN 60947-7-3 (2009) Low-voltage switchgear and controlgear - Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks) Low-voltage switchgear and controlgear - Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks

EN 61009-1 (2012/A1:2014) Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules

EN 61386-1 Conduit systems for cable management - Part 1: General requirements

EN 61386-21 Conduit systems for cable management - Part 21: Particular requirements - Rigid conduit systems

EN 61386-22 Conduit Systems for cable management - Part 22: Particular requirements - Pliable conduit systems

EN 61386-23 Conduit systems for cable management - Part 23: Particular requirements - Flexible conduit systems

EN 61537 Cable management - Cable tray systems and cable ladder systems

EN 61643-11 (2018) Low-voltage surge protective devices. Surge protective devices connected to low-voltage power systems.

Requirements and test methods

EN 62305 Protection against lightning

EN 62561-2 Protection against lightning

SECTION 26 20 00 Page 2

EUROPEAN UNION (EU)

Directive 2009/125/EC 2009 establishing a framework for the setting of ecodesign requirements for energy-related products

HELLENIC ORGANIZATION FOR STANDARDIZATION (ELOT) (ELOT EN)

ELOT HD 384 (1998) Electrical installations of buildings

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 14763-2 (2019) Information technology -- Implementation and operation of customer premises cabling

IEC 60034-1 (2017) Rotating Electrical Machines – Part 1: Rating and Performance

IEC 60076-1 (2011) Power transformers - Part 1: General

IEC 60227-1 (2007) Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 1: General requirements

IEC 60228 (2004) Conductors of insulated cables

IEC 60332-1 (2004+AMD1:2015) Tests on electric and optical fibre cables under fire conditions

- Part 1: Test for vertical flame propagation for a single insulatedwire or cable

IEC 60364 Electrical Installations for Buildings

IEC 60947-1 (2020) Low-Voltage Switchgear and Controlgear - Part 1: General Rules

IEC 60947-4 (2020) Low-voltage switchgear and controlgear – Part 4: Contactors and motor-starters. All applicable subparts

IEC 60947-5 (2016/COR2:2020) Corrigendum 2 - Low-voltage switchgear and controlgear - Part 5: Control circuit devices and switching elements. All applicable subparts

IEC 60947-7 (2009) Low-voltage switchgear and controlgear - Part 7: Ancillary equipment

IEC 61084-2-1 (2017) Cable trunking systems and cable ducting systems for electrical installations - Part 2-1: Particular requirements - Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings

SECTION 26 20 00 Page 3

IEC 61238-1 Compression and mechanical connectors for power cables - Part 1-1: Test methods and requirements for compression and mechanical connectors for power cables for rated voltages up to 1 kV (U_m = 1,2 kV) tested on non-insulated conductors

IEC 61439-1 (2020) Low-Voltage Switchgear and Controlgear Assemblies - Part 1: General Rules

IEC 61439-6 (2012) Low-voltage switchgear and controlgear assemblies - Part 6: Busbar trunking systems (busways)

IEC 61558 (2017) Safety of transformers, reactors, power supply units and combinations thereof. All parts and subparts

GERMAN INSTITUTE FOR STANDARDIZATION (DIN)

DIN 4102-12 Fire behaviour of building materials and elements - Fire resistance of electric cable systems required to maintain circuit integrity - Requirements and testing

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 81 (2012) Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System

IEEE 100 (2000; Archived) The Authoritative Dictionary of IEEE Standards Terms

IEEE C2 (2017; Errata 1-2 2017; INT 1 2017) National Electrical Safety Code

INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2017; Errata 2017) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-STD-188-124B (1998; Rev B; Notice 2 1998; Notice 3 2000; Notice 4 2013) Grounding, Bonding and Shielding for Common Long Haul/Tactical Communications Systems, Including Ground Based Communications - Electronics Facilities and Equipments

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA ICS 1 (2000; R 2015) Standard for Industrial Control and Systems: General Requirements

SECTION 26 20 00 Page 4

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2020; ERTA 20-1 2020; ERTA 20-2 2020; TIA

20-1; TIA 20-2; TIA 20-3; TIA 20-4)

National Electrical Code

NFPA 70E (2018; TIA 18-1; TIA 81-2) Standard for Electrical Safety in the Workplace

TELECOMMUNICATIONS INDUSTRY ASSOCIATION (TIA)

TIA-569 (2019e) Commercial Building Standard for Telecommunications Pathways and Spaces

TIA-607 (2019d) Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

10 CFR 431 Energy Efficiency Program for Certain Commercial and Industrial Equipment

29 CFR 1910.147 The Control of Hazardous Energy (Lock Out/Tag Out)

29 CFR 1910.303 Electrical, General

UNDERWRITERS LABORATORIES (UL)

UL 2043 (2013) Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces

UL 4248-12 (2018) UL Standard for Safety Fuseholders

- Part 12: Class R

1.2 DEFINITIONS

Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, are as defined in

IEEE 100 .

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Panelboards; G

Transformers; G

SECTION 26 20 00 Page 5

Busway; G

Cable Trays; G

Wireways; G

Marking Strips Drawings; G

SD-03 Product Data

Receptacles; G

Circuit Breakers; G

Switches; G

Transformers; G

Enclosed Circuit Breakers; G

Motor Controllers; G

CATV Outlets; G

Telecommunications Grounding Busbar; G

Surge Protective Devices; G

SD-06 Test Reports

1,000-volt Wiring Test; G

Grounding System Test; G

Transformer Tests; G

Ground-fault Receptacle Test; G

SD-07 Certificates

Fuses; G

SD-09 Manufacturer's Field Reports

Transformer Factory Tests

SD-10 Operation and Maintenance Data

Electrical Systems, Data Package 5; G

1.4 QUALITY ASSURANCE

1.4.1 Fuses

Submit coordination data as specified in paragraph, FUSES of this section.

1.4.2 Regulatory Requirements

In each of the publications referred to herein, consider the advisory

SECTION 26 20 00 Page 6 provisions to be mandatory, as though the word, "shall" or "must" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of similar meaning, to mean the Contracting Officer. Provide equipment, materials, installation, and workmanship in accordance with the mandatory and advisory provisions of, ELOT HD 384 , IEC 60364 unless more stringent requirements are specified or indicated.

1.4.3 Standard Products

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship and:

a. Have been in satisfactory commercial or industrial use for 2 years prior to bid opening including applications of equipment and materials under similar circumstances and of similar size.

b. Have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2-year period.

c. Where two or more items of the same class of equipment are required, provide products of a single manufacturer; however, the component parts of the item need not be the products of the same manufacturer unless stated in this section.

1.4.3.1 Alternative Qualifications

Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is furnished.

1.4.3.2 Material and Equipment Manufacturing Date

Products manufactured more than 3 years prior to date of delivery to site are not acceptable.

1.5 MAINTENANCE

1.5.1 Electrical Systems

Submit operation and maintenance data in accordance with Section 01 78 23, OPERATION AND MAINTENANCE DATA and as specified herein. Submit operation and maintenance manuals for electrical systems that provide basic data relating to the design, operation, and maintenance of the electrical distribution system for the building. Include the following:

a. Single line diagram of the "as-built" building electrical system.

b. Schematic diagram of electrical control system (other than HVAC, covered elsewhere).

c. Manufacturers' operating and maintenance manuals on active electrical equipment.

1.6 WARRANTY

Provide equipment items supported by service organizations that are

SECTION 26 20 00 Page 7 reasonably convenient to the equipment installation in order to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

1.7 SEISMIC REQUIREMENTS

Provide seismic details conforming to Section 13 48 73 SEISMIC CONTROL FOR

NON-STRUCTURAL COMPONENTS.

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

As a minimum, meet requirements of UL, where UL standards are established for those items, and requirements of NFPA 70 for all materials, equipment, and devices.

2.2 CONDUIT AND FITTINGS

Do not exceed more than 180 degrees in bends for telecommunications conduit. Place pull box at a strategic location to not allow maximum bend to be exceeded.

Conform to the following:

2.2.1 Rigid Metallic Conduit

2.2.1.1 Rigid, Threaded Zinc-Coated Steel Conduit

Compliance with EN 10346 , EN 60423 , EN 61386-1 , EN 61386-21 , very heavy type.

2.2.2 Rigid Nonmetallic Conduit

EN 61386-1 and EN 61386-21 , extra heavy type.

2.2.3 Electrical, Zinc-Coated Steel Metallic Tubing (EMT)

EN 61386-1 , EN 61386-21 , heavy type.

2.2.4 Flexible Metal Conduit

Compliant with EN 61386-1 and EN 61386-23 , heavy type

2.2.4.1 Liquid-Tight Flexible Metal Conduit, Steel

EN 61386-1 and EN 61386-23 , IP 66 heavy type.

2.2.5 Fittings for Metal Conduit, EMT, and Flexible Metal Conduit

Ferrous fittings: cadmium- or zinc-coated in accordance with EN 61386-1 , EN 61386-21 , EN 61386-22 , EN 60423 and EN 61386-23 .

2.2.5.1 Fittings for Rigid Metal Conduit

EN 61386-21 . Complies with EN 60529 IP66/IP67. Threaded-type. Electrical continuity complies with EN 61386-1 . ISO threads comply with EN 60423 .

SECTION 26 20 00 Page 8

2.2.5.2 Fittings for EMT

Steel compression type.

2.2.6 Fittings for Rigid Nonmetallic Conduit

EN 61386-1 , EN 61386-21 , same type as conduit.

2.2.7 Liquid-Tight Flexible Nonmetallic Conduit

EN 61386-1 , EN 61386-23 , very heavy type.

2.2.8 Steel Pipe

Use steel pipe for conduit sleeves through concrete floor.

2.3 SURFACE RACEWAY

2.3.1 Surface Metal Raceway

EN 50085-2-1 , IEC 61084-2-1 , two-piece painted steel, totally enclosed, snap-cover type. Provide multiple outlet-type raceway with grounding-type receptacle where indicated. Provide receptacles as specified herein, spaced a minimum of one every 455 mm or as indicated on Drawings.

2.4 BUSWAY

IEC 61439-1 , IEC 61439-6

a. Buses: copper

b. Busways: rated 400Y/230 volts, continuous current amperes as indicated on drawings, three-phase, four-wire, and include integral or internal ground bus.

c. Short circuit rating: 25 kAIC root mean square (rms) symmetrical amperes minimum or as indicated.

d. Busway systems: suitable for use indoors.

e. Enclosures: metallic.

f. Hardware: plated or otherwise protected to resist corrosion.

g. Joints: one-bolt type with through-bolts, which can be checked for tightness without de-energizing system.

h. Maximum hot spot temperature rise at any point in busway at continuous rated load: do not exceed 55 degrees C above maximum ambient temperature of 40 degrees C in any position.

i. Internal barriers to prevent movement of superheated gases.

j. Coordinate proper voltage phasing of entire bus duct system, for example where busway interfaces with transformers, switchgear, switchboards, motor control centers, and other system components.

SECTION 26 20 00 Page 9

2.4.1 Plug-In Busways

Unventilated type. Provide the following:

a. Plug-in units: circuit breaker-type.

b. Bus bars: covered with insulating material throughout, except at joints and other connection points.

2.5 CABLE TRAYS

EN 61537 . Cable Runway. Provide the following:

a. Cable runway: form a wireway system, with a nominal depth indicated.

b. Cable runway: constructed of aluminum.

c. Cable runway: include splice and end plates, dropouts, and miscellaneous hardware.

d. Edges, fittings, and hardware: finished free from burrs and sharp edges.

e. Fittings: ensure not less than load-carrying ability of straight tray sections and have manufacturer's minimum standard radius.

f. Radius of bends: As indicated.

2.5.1 Basket-Type Cable Trays

Provide size as indicated. Use basket-type cable tray for telecommunications, unless indicated otherwise on drawings. Refer to plan drawings for tray dimensions. Provide an additional pull string in each cable tray.

2.5.2 Ladder-Type Cable Trays

Provide size as indicated.

Use aluminum ladder-type for telecommunication vertical tray as shown on the drawings.

Cable runway: constructed of aluminum.

a. Cable ladder: include splice and end plates, dropouts, and miscellaneous hardware. Refer to electrical plans for grounding and bonding.

b. Edges, fittings, and hardware: finished free from burrs and sharp edges.

c. Fittings: ensure not less than load-carrying ability of straight tray sections and have manufacturer's minimum standard radius.

Use aluminum ladder with cover lid for telecommunications tray on the roof.

a. Cable ladder: include splice and end plates, dropouts, and miscellaneous hardware. Refer to electrical plans for grounding and bonding.

SECTION 26 20 00 Page 10

b. Edges, fittings, and hardware: finished free from burrs and sharp edges.

c. Fittings: ensure not less than load-carrying ability of straight tray sections and have manufacturer's minimum standard radius.

2.6 TELECOMMUNICATIONS CABLE SUPPORT

2.6.1 Open Top Cable Supports

Provide open top cable supports in accordance with UL 2043 or IEC 14763-2 tested according to DIN 4102-12 . Provide galvanized open top cable supports as indicated.

2.6.2 Closed Ring Cable Supports

Provide closed ring cable supports in accordance with UL 2043 or IEC 14763-2 tested according to DIN 4102-12 . Provide galvanized closed ring cable supports as indicated.

2.7 OUTLET BOXES AND COVERS

EN 60670 , cadmium- or zinc-coated or nonmetallic.

Where an outlet box (including all junction boxes, floor boxes, telecom boxes) is recessed inside a fire rated wall, the outlet box must be listed with a fire rating equal to, or exceeding, the fire rating of the wall.

Coordinate outlet boxes on wall such that boxes on one-side occupy the same cavity between studs. Boxes on other side of wall shall use a different cavity between studs.

a. Audio Visual Flushmount Wall Insert

b. Provide size as indicated on telecommunications drawings.

c. Provide with knockouts up to 50 mm as required.

d. Provide with cover/lid.

2.7.1 Floor Outlet Boxes

Provide the following:

a. Boxes: adjustable and concrete tight.

b. Refer to telecommunications details drawings for telecommunications provided floor boxes.

c. Each outlet: consisting of cast-metal body with threaded openings, or sheet-steel body with knockouts for conduits, adjustable, brass flange ring, and cover plate with 19, 25, 31.75, 53.92 mm threaded plug.

d. Telecommunications outlets: consisting of flush, aluminum or stainless steel-housing with a receptacle as specified.

e. Receptacle outlets: consisting of surface-mounted, horizontal flush aluminum or stainless-steel housing with duplex-type receptacle as specified herein.

SECTION 26 20 00 Page 11

f. Provide gaskets where necessary to ensure watertight installation.

2.7.2 Outlet Boxes for Telecommunications System

Provide the following:

a. Standard type 125 mm x 125 mm x 65 mm deep in dry partitions.

b. Outlet boxes for wall-mounted telecommunications outlets: 125 mm x 125 mm x 65 mm deep.

c. Depth of boxes: at minimum of 65 mm of depth.

d. Outlet boxes for fiber optic telecommunication outlets: Use double-gang, 75 mm in depth.

2.8 CABINETS, JUNCTION BOXES, AND PULL BOXES

Volume greater than 1640 mL, EN 60670 , hot-dip, zinc-coated, if sheet steel.

2.9 WIRES AND CABLES

Provide wires and cables in accordance applicable requirements of ELOT HD 384 , IEC 60364 and EN standards for type of insulation, jacket, and conductor specified or indicated. Do not use wires and cables manufactured more than 12 months prior to date of delivery to site.

2.9.1 Conductors

Provide the following:

a. Conductor sizes and capacities shown are based on copper, unless indicated otherwise.

b. Conductors No. 10 sq mm and larger diameter: stranded.

c. Conductors No. 6 sq mm and smaller diameter: solid.

d. Conductors for remote control, alarm, and signal circuits, classes 1, 2, and 3: stranded unless specifically indicated otherwise.

2.9.1.1 Minimum Conductor Sizes

Provide minimum conductor size in accordance with the following:

a. Branch circuits: As noted on drawings.

b. Class 1 remote-control and signal circuits: As noted.

c. Class 2 low-energy, remote-control and signal circuits: As noted.

d. Class 3 low-energy, remote-control, alarm and signal circuits: As noted.

e. Digital low voltage lighting control (DLVLC) system at 24 Volts or less: Category 6A F/UTP cables in EMT conduit in accordance with DLVLC system manufacturer requirements.

SECTION 26 20 00 Page 12

2.9.2 Color Coding

Provide color coding for service, feeder, branch, control, and signaling circuit conductors.

2.9.2.1 Ground and Neutral Conductors

Provide color coding of ground and neutral conductors as follows:

a. Grounding conductors: Yellow/Green.

b. Neutral conductors: Light blue.

2.9.2.2 Ungrounded Conductors

Provide color coding of ungrounded conductors in different voltage systems as follows:

a. 400/230 volt, three-phase

(1) Phase A - grey

(2) Phase B - black

(3) Phase C - brown

2.9.3 Insulation

Unless specified or indicated otherwise or required by ELOT HD 384 and IEC 60364 , provide power and lighting wires type Ho7V-U/R/k conforming to IEC 60227-1 , or HO5VV electrical. Insulation shall conform to IEC 60227-1 .

Remote control and signal circuit type HO5VV-F shall conform to EN 50525 , EN 60811-100 ..

2.9.4 Bonding Conductors

IEC 60228 , solid bare copper wire for sizes 6 mm 2 and smaller diameter;

stranded bare copper wire for sizes 10 mm 2 and larger diameter.

2.9.4.1 Telecommunications Bonding Backbone (TBB)

Provide a copper conductor TBB in accordance with EN 50310 , MIL-STD-188-124B , and TIA-607 with 16 mm 2 minimum size, and sized at 23.4 mm 2 per linear meter of conductor length up to a maximum size of 100 mm 2.

2.9.4.2 Bonding Conductor for Telecommunications

Provide a copper conductor Bonding Conductor for Telecommunications between the Signal Bonding Bars (SBB) and the equipotential grounding plane in accordance with EN 50310 and MIL-STD-188-124B . Size the bonding conductor for telecommunications the same as the TBB.

2.9.5 Cable Tray Cable or Power Limited Tray Cable

Provide cables with double insulation.

SECTION 26 20 00 Page 13

2.9.6 Cord Sets and Power-Supply Cords

EN 60320-1 .

2.10 SPLICES AND TERMINATION COMPONENTS

Connectors for 6 sq mm copper and smaller diameter wires shall be:

insulated, pressure-type in accordance with IEC 61238-1 . Provide solderless terminal lugs on stranded conductors.

2.11 DEVICE PLATES

Provide the following:

a. CE listed, one-piece device plates for outlets to suit the devices installed.

b. For metal outlet boxes, plates on unfinished walls: zinc-coated sheet steel or cast metal having round or beveled edges.

c. For nonmetallic boxes and fittings, other suitable plates may be provided.

d. Plates on finished walls: nylon or lexan, minimum 0.792 mm wall thickness and same color as receptacle or toggle switch with which they are mounted.

e. Plates on finished walls: satin finish stainless steel or brushed-finish aluminum, minimum 0.792 mm thick.

f. Screws: machine-type with countersunk heads in color to match finish of plate.

g. Sectional type device plates are not be permitted.

h. Plates installed in wet locations: gasketed and UL listed for "wet locations."

2.12 SWITCHES

2.12.1 Toggle Switches

EN 60669-1 , single pole, double pole, three-way, and four-way, totally enclosed with bodies of thermoplastic or thermoset plastic and mounting strap with grounding screw. Include the following:

a. Handles: white thermoplastic.

b. Wiring terminals: screw-type, side-wired.

c. Contacts: silver-cadmium and contact arm - one-piece copper alloy.

d. Switches: rated quiet-type ac only, 250 volts, with current rating and number of poles indicated.

2.12.2 Switch with Red Pilot Handle

EN 60669-1 . Provide the following:

SECTION 26 20 00 Page 14

a. Pilot lights that are integrally constructed as a part of the switch's handle.

b. Pilot light color: red and illuminate whenever the switch is closed or "on".

c. Pilot lighted switch: rated 20 amps and 250 volts as indicated.

d. The circuit's neutral conductor to each switch with a pilot light.

2.12.3 Disconnect Switches

EN 60947-3 . Provide heavy duty-type switches where indicated, where switches are rated higher than 230 volts, and for double-throw switches.

Utilize Class R fuse holders and fuses for fused switches, unless indicated otherwise. Provide horsepower rated for switches serving as the motor-disconnect means. Provide switches in IP10 enclosure for interior and IP66 for exterior spaces per EN 60529 .

2.13 FUSES

EN 60947-3 . Provide complete set of fuses for each fused device.

Coordinate time-current characteristics curves of fuses serving motors or connected in series with circuit breakers or other circuit protective devices for proper operation. Submit coordination data for approval.

Provide fuses with a voltage rating not less than circuit voltage.

2.13.1 Fuseholders

Provide in accordance with EN 60947-7-3 .

2.13.2 Cartridge Fuses, Current Limiting Type (Class R)

EN 60269-2 , Class RK-1 or RK-5 time-delay type. Provide only Class R associated fuse holders in accordance with UL 4248-12 .

2.13.3 Cartridge Fuses, High-Interrupting Capacity, Current Limiting Type (Classes J, L, and CC)

EN 60269-2 , Class J for zero to 600 amperes, Class L for 601 to 6,000 amperes, and Class CC for zero to 30 amperes.

2.13.4 Cartridge Fuses, Current Limiting Type (Class T)

EN 60269-2 , Class T for zero to 1,200 amperes, 300 volts; and zero to 800 amperes, 600 volts.

2.14 RECEPTACLES

Provide the following:

a. EN 60320-1 , hard use (also designated heavy-duty), grounding-type.

b. Ratings and configurations: as indicated.

c. Bodies: white.

d. Face and body: thermoplastic supported on a metal mounting strap.

SECTION 26 20 00 Page 15

e. Screw-type, side-wired wiring terminals or of the solderless pressure type having suitable conductor-release arrangement.

f. Grounding pole connected to mounting strap.

2.14.1 Split Duplex Receptacles

Provide separate terminals for each ungrounded pole. One receptacle must be controlled separately.

2.14.2 Weatherproof Receptacles

Provide receptacles listed for use in "wet locations" in accordance EN 60529 . Include cast metal box with gasketed, hinged, lockable and weatherproof while-in-use, polycarbonate, UV resistant/stabilized cover plate.

2.14.3 Receptacles with Residual Current Operated Circuit Breakers

EN 61009-1 , EN 60947-2 , duplex type for mounting in standard outlet box.

Provide device capable of detecting current leak when the current to ground is 10 milliamperes or higher. Provide screw-type, side-wired wiring terminals or pre-wired (pigtail) leads.

2.14.4 Special Purpose Receptacles

Provide special purpose receptacles with ratings as indicated.

2.14.5 Plugs

Provide heavy-duty, rubber-covered three-, four-, or five-wire cord of required size to match the respective receptacle as shown.

2.15 PANELBOARDS

Provide panelboards in accordance with the following:

a. EN 60439-1 and EN 60529 having a short-circuit current rating based on the final study's result from section 26 28 01.00 10 COORDINATED POWER

SYSTEM PROTECTION.

b. Panelboards: circuit breaker-equipped.

c. Designed such that individual breakers can be removed without disturbing adjacent units or without loosening or removing supplemental insulation supplied as means of obtaining clearances as required by UL.

d. "Specific breaker placement" is required in panelboards to match the breaker placement indicated in the panelboard schedule on the drawings.

e. Use of "Subfeed Breakers" is not acceptable.

f. Main breaker: "separately" mounted "above" or "below" branch breakers to follow if the panel feeder enters from the top or bottom.

g. Where "space only" is indicated, make provisions for future installation of breakers.

SECTION 26 20 00 Page 16

h. Directories: indicate load served by each circuit in panelboard.

i. Directories: indicate source of service to panelboard (e.g., Panel PA served from Panel MDP).

j. Type directories and mount in holder behind transparent protective covering.

k. Panelboard nameplates: provided in accordance with paragraph FIELD

FABRICATED NAMEPLATES.

2.15.1 Enclosure

Provide panelboard enclosure in accordance with the following:

a. EN 60529 .

b. Cabinets mounted outdoors or flush-mounted: hot-dipped galvanized after fabrication.

c. Cabinets: painted in accordance with paragraph PAINTING.

d. Front edges of cabinets: form-flanged or fitted with structural shapes welded or riveted to the sheet steel, for supporting the panelboard front.

e. All cabinets: fabricated such that no part of any surface on the finished cabinet deviates from a true plane by more than 3 mm.

f. Holes: provided in the back of indoor surface-mounted cabinets, with outside spacers and inside stiffeners, for mounting the cabinets with a 15 mm clear space between the back of the cabinet and the wall surface.

g. Flush doors: mounted on hinges that expose only the hinge roll to view when the door is closed.

h. Each door: fitted with a combined catch and lock latch.

i. Keys: two provided with each lock, with all locks keyed alike.

j. Finished-head cap screws: provided for mounting the panelboard fronts on the cabinets.

2.15.2 Panelboard Buses

Support bus bars on bases independent of circuit breakers. Design main buses and back pans so that breakers may be changed without machining, drilling, or tapping. Provide isolated neutral bus in each panel for connection of circuit neutral conductors. Provide separate ground bus identified as equipment grounding bus for connecting grounding conductors;

bond to steel cabinet.

2.15.2.1 Panelboard Neutrals for Non-Linear Loads

Provide in accordance with the following:

a. CE listed, with panelboard type specifically heat rise tested for use

SECTION 26 20 00 Page 17 on non-linear loads.

b. Panelboard: heat rise tested, except with the neutral assembly installed and carrying 200 percent of the phase bus current during testing.

c. Verification of the testing procedure: provided upon request.

d. Two neutral assemblies paralleled together with cable is not acceptable.

e. Nameplates for panelboard rated for use on non-linear loads: marked "SUITABLE FOR NON-LINEAR LOADS" and in accordance with paragraph FIELD

FABRICATED NAMEPLATES.

f. Provide a neutral label with instructions for wiring the neutral of panelboards rated for use on non-linear loads.

2.15.3 Circuit Breakers

EN 60947-2 , thermal magnetic-type having a minimum short-circuit current rating equal to the short-circuit current rating of the panelboard in which the circuit breaker will be mounted. Breaker terminals: UL listed as suitable for type of conductor provided. Where indicated on the drawings, provide circuit breakers with shunt trip devices. Series rated circuit breakers and plug-in circuit breakers are unacceptable.

2.15.3.1 Multipole Breakers

Provide common trip-type with single operating handle. Design breaker such that overload in one pole automatically causes all poles to open.

Maintain phase sequence throughout each panel so that any three adjacent breaker poles are connected to Phases A, B, and C, respectively.

2.15.3.2 Circuit Breaker With Ground-Fault Circuit Interrupter

EN 60947-2 . Provide with auto-monitoring (self-test) and lockout features, "push-to-test" button, visible indication of tripped condition, and ability to detect and trip when current imbalance is above milliamperes indicated in Drawings.

2.16 ENCLOSED CIRCUIT BREAKERS

Individual molded case circuit breakers with voltage and continuous current ratings, number of poles, overload trip setting, and short circuit current interrupting rating as indicated. Enclosure type as indicated.

Provide solid neutral.

2.17 TRANSFORMERS

Provide transformers in accordance with the following:

a. IEC 60076-1 , general purpose, dry-type, self-cooled, ventilated.

b. Provide transformers in IP 10 enclosure.

c. Taps for transformers 15 kVA and larger: Two 2.5 percent taps Full Capacity Above Nominal (FCAN) and two 2.5 percent taps Full Capacity Below Nominal (FCBN).

SECTION 26 20 00 Page 18

d. Transformer insulation system:

(1) 220 degrees C insulation system for transformers 15 kVA and greater, with temperature rise not exceeding 115 degrees C under full-rated load in maximum ambient of 40 degrees C.

(2) 180 degrees C insulation for transformers rated 10 kVA and less, with temperature rise not exceeding 80 degrees C under full-rated load in maximum ambient of 40 degrees C.

e. Transformer of 150 degrees C temperature rise is not acceptable.

2.17.1 Specified Transformer Efficiency

Eco design guideline Directive 2009/125/EC , with latest amendment.

Transformers indicated and specified with: 400V primary, 80 degrees C or 115 degrees C temperature rise, kVA ratings of 37.5 to 100 for single phase or 30 to 500 for three phase, energy efficient type. The transformer is not acceptable if the calculated transformer efficiency is less than the efficiency indicated in 10 CFR 431 , Subpart K.

2.17.2 Harmonic Mitigating Transformers

Provide harmonic mitigating transformers in accordance with the following:

a. Transformer insulation: Neither the primary nor the secondary temperature is allowed to exceed 220 degrees C at any point in the coils while carrying their full rating of non-sinusoidal load.

b. Transformer to be of two-winding construction. The primary winding to be a delta three-wire connection and the secondary winding to be a wye-zigzag with a wye field connection.

c. 200% Neutral.

d. Transformers with ratings with temperature rise of 150 degrees C rise are not acceptable.

e. Provide with an electrostatic shield consist of K-Factor rated transformers impedance: allowed range of 3 percent to 5 percent, with a minimum reactance of 2 percent to prevent excessive neutral current when supplying loads with large amounts of third harmonic.

f. Harmonic Treatment:

1. Harmonic Mitigating Transformers (HMTs) shall have a low Positive/Negative sequence impedance (between 4.6% and 7.2%) and low Zero-Sequence impedance/reactance (less than 0.55% and 0.47% respectively.

2. Triplen harmonics shall be treated in the secondary windings through flux cancellation and not coupled to the primary delta winding.

3. Fundamental current imbalance shall be reduced on the primary when compared to the secondary load measurements.

SECTION 26 20 00 Page 19

2.18 HARMONIC MITIGATING TRANSFORMER PDU

Provide harmonic mitigating transformer PDUs to integrate a harmonic mitigating transformer and a panelboard into the same enclosure and include the following:

a. Front only access installation and maintenance

b. Framed cabinet

c. Lockable hinged doors

d. Top cable entry/exit

2.19 MOTORS

Provide motors in accordance with the following:

a. IEC 60034-1 .

b. Hermetic-type sealed motor compressors.

c. Provide the size in terms of kW, or kVA, or full-load current, or a combination of these characteristics, and other characteristics, of each motor as indicated or specified.

d. Determine specific motor characteristics to ensure provision of correctly sized starters and overload heaters.

e. Rate motors for operation on 400-volt, 3-phase circuits with a terminal voltage rating of 385 volts.

f. Use motors designed to operate at full capacity with voltage variation of plus or minus 10 percent of motor voltage rating.

g. Unless otherwise indicated, use continuous duty type motors if rated 746 Watts and above.

h. Where fuse protection is specifically recommended by the equipment manufacturer, provide fused switches in lieu of non-fused switches indicated.

i. Use Inverter-Duty motors designed to operate with adjustable speed drive (ASD).

2.19.1 High Efficiency Single-Phase Motors

Single-phase fractional-horsepower alternating-current motors: high efficiency types are not acceptable. In exception, for special purpose motors and motor-driven equipment with a minimum seasonal or overall efficiency rating, such as a SEER rating, provide equipment with motor to meet the overall system rating indicated.

2.19.2 Premium Efficiency Polyphase and Single-Phase Motors

Motors efficiency shall at minimum meet the requirements of ERP Directive 2009/125/EC and regulation 640/2009.

SECTION 26 20 00 Page 20

2.19.3 Motor Sizes

Provide size for duty to be performed, not exceeding the full-load nameplate current rating when driven equipment is operated at specified capacity under most severe conditions likely to be encountered. When motor size provided differs from size indicated or specified, make adjustments to wiring, disconnect devices, and branch circuit protection to accommodate equipment actually provided. Provide controllers for motors rated 1-hp and above with electronic phase-voltage monitors designed to protect motors from phase-loss, undervoltage, and overvoltage. Provide protection for motors from immediate restart by a time adjustable restart relay.

2.19.4 Wiring and Conduit

Provide internal wiring for components of packaged equipment as an integral part of the equipment. Provide power wiring and conduit for field-installed equipment as specified herein. Power wiring and conduit:

conform to the requirements specified herein. Control wiring: provided under, and conform to, the requirements of the section specifying the associated equipment.

2.20 MOTOR CONTROLLERS

Provide motor controllers in accordance with the following:

a. IEC 60947-1 , IEC 60947-4 , IEC 60947-5 as applicable.

b. Provide controllers with thermal overload protection in each phase, and one spare normally open auxiliary contact, and one spare normally closed auxiliary contact.

c. Provide controllers for motors rated 1-hp and above with electronic phase-voltage monitors designed to protect motors from phase-loss, undervoltage, and overvoltage.

d. Provide protection for motors from immediate restart by a time adjustable restart relay.

e. When used with pressure, float, or similar automatic-type or maintained-contact switch, provide a hand/off/automatic selector switch with the controller.

f. Connections to selector switch: wired such that only normal automatic regulatory control devices are bypassed when switch is in "hand" position.

g. Safety control devices, such as low and high pressure cutouts, high temperature cutouts, and motor overload protective devices: connected in motor control circuit in "hand" and "automatic" positions.

h. Control circuit connections to hand/off/automatic selector switch or to more than one automatic regulatory control device: made in accordance with indicated or manufacturer's approved wiring diagram.

i. Provide a disconnecting means, capable of being locked in the open position, for the motor that is located in sight from the motor location and the driven machinery location. As an alternative, provide a motor controller disconnect, capable of being locked in the

SECTION 26 20 00 Page 21 open position, to serve as the disconnecting means for the motor if it is in sight from the motor location and the driven machinery location.

j. Overload protective devices: provide adequate protection to motor windings; be thermal inverse-time-limit type; and include manual reset-type pushbutton on outside of motor controller case.

k. Cover of combination motor controller and manual switch or circuit breaker: interlocked with operating handle of switch or circuit breaker so that cover cannot be opened unless handle of switch or circuit breaker is in "off" position.

2.20.1 Control Wiring

Provide control wiring in accordance with the following:

a. All control wire: stranded tinned copper switchboard wire with 750 -volt flame-retardant insulation and passing the flame tests included in those standards. IEC 60332-1

b. Hinge wire: Class K stranding.

c. Current transformer secondary leads: not smaller than 6 mm2.

d. Control wire minimum size: 2.5 mm 2.

e. Power wiring for 400-volt circuits and below: the same type as control wiring with 4 mm 2 minimum size.

f. Provide wiring and terminal arrangement on the terminal blocks to permit the individual conductors of each external cable to be terminated on adjacent terminal points.

2.20.2 Control Circuit Terminal Blocks

Provide control circuit terminal blocks in accordance with the following:

a. IEC 60947-7 .

b. Control circuit terminal blocks for control wiring: molded or fabricated type with barriers, rated not less than 600 volts.

c. Provide terminals with removable binding, fillister or washer head screw type, or of the stud type with contact and locking nuts.

d. Terminals: not less than No. 10 in size with sufficient length and space for connecting at least two indented terminals for 6.0 mm 2 conductors to each terminal.

e. Terminal arrangement: subject to the approval of the Contracting Officer with not less than four spare terminals or 10 percent, whichever is greater, provided on each block or group of blocks.

f. Modular, pull apart, terminal blocks are acceptable provided they are of the channel or rail-mounted type.

g. Submit data showing that any proposed alternate will accommodate the specified number of wires, are of adequate current-carrying capacity, SECTION 26 20 00 Page 22 and are constructed to assure positive contact between current-carrying parts.

2.20.2.1 Types of Terminal Blocks

a. Short-Circuiting Type: Short-circuiting type terminal blocks:

furnished for all current transformer secondary leads with provision for shorting together all leads from each current transformer without first opening any circuit. Terminal blocks: comply with the requirements of paragraph CONTROL CIRCUIT TERMINAL BLOCKS above.

b. Load Type: Load terminal blocks rated not less than 600 volts and of adequate capacity: provided for the conductors for NEMA Size 3 and smaller motor controllers and for other power circuits, except those for feeder tap units. Provide terminals of either the stud type with contact nuts and locking nuts or of the removable screw type, having length and space for at least two indented terminals of the size required on the conductors to be terminated. For conductors rated more than 50 amperes, provide screws with hexagonal heads. Conducting parts between connected terminals must have adequate contact surface and cross-section to operate without overheating. Provide each connected terminal with the circuit designation or wire number placed on or near the terminal in permanent contrasting color.

2.20.3 Control Circuits

Control circuits: maximum voltage of 230 volts derived from control transformer in same enclosure. Transformers: conform to IEC 61558 , as applicable. Transformers, other than transformers in bridge circuits:

provide primaries wound for voltage available and secondaries wound for correct control circuit voltage. Size transformers so that 80 percent of rated capacity equals connected load. Provide disconnect switch on primary side. Provide one fused secondary lead with the other lead grounded.

2.20.4 Enclosures for Motor Controllers

EN 60529 .

2.20.5 Multiple-Speed Motor Controllers and Reversible Motor Controllers

Across-the-line-type, electrically and mechanically interlocked.

Multiple-speed controllers: include compelling relays and multiple-button, station-type with pilot lights for each speed.

2.20.6 Pushbutton Stations

Provide with "start/stop" momentary contacts having one normally open and one normally closed set of contacts, and red lights to indicate when motor is running. Stations: heavy duty, oil-tight design.

2.20.7 Pilot and Indicating Lights

Provide LED cluster lamps.

2.21 MANUAL MOTOR STARTERS (MOTOR RATED SWITCHES)

Double pole designed for surface mounting with overload protection and pilot lights.

SECTION 26 20 00 Page 23

2.21.1 Pilot Lights

Provide yoke-mounted, seven element LED cluster light module. Color: green, red, or amber as required.

2.22 LOCKOUT REQUIREMENTS

Provide circuit breakers, disconnecting means, and other devices that are electrical energy-isolating capable of being locked out for machines and other equipment to prevent unexpected startup or release of stored energy in accordance with 29 CFR 1910.147 , NFPA 70E and 29 CFR 1910.303 . Comply with requirements of Division 23, "Mechanical" for mechanical isolation of machines and other equipment.

2.23 TELECOMMUNICATIONS SYSTEM

Provide system of telecommunications cable-supporting structures (pathway), including: outlet boxes, conduits with pull wires, cable trays, and other accessories for telecommunications outlets and pathway in accordance with EN 50174-2 and TIA-569 and as specified herein.

Additional telecommunications requirements are specified in Section

27 10 00 BUILDING TELECOMMUNICATIONS CABLING SYSTEM.

2.24 COMMUNITY ANTENNA TELEVISION (CATV) SYSTEM

2.24.1 CATV Outlets

Provide flush mounted, 75-ohm, F-type connector outlet rated from 5 to 1000 MHz and Category 6A port in standard electrical outlet boxes with isolation barrier with mounting frame. Refer to 27 10 00 BUILDING TELECOMMUNICATIONS CABLING SYSTEMS for information regarding Category 6A.

Heights as indicated.

2.24.2 CATV Faceplates

Provide modular faceplates for mounting of CATV Outlets. Faceplate:

include designation labels and label covers for circuit identification.

Faceplate color: match outlet and switch cover plates.

2.25 GROUNDING AND BONDING EQUIPMENT

2.25.1 Ground Rods

EN 62561-2 . Ground rods: copper-clad steel with minimum diameter of 17 mm and minimum length of 3000 mm. Sectional ground rods are permitted.

2.25.2 Ground Bus

Copper ground bus: provided in the electrical rooms, equipment rooms, and other rooms as indicated.

2.25.3 Telecommunications Grounding Busbar

Provide corrosion-resistant grounding busbar suitable for indoor installation in accordance with EN 50310 . Busbars: plated for reduced contact resistance. If not plated, clean the busbar prior to fastening the conductors to the busbar and apply an anti-oxidant to the contact area to control corrosion and reduce contact resistance. Provide a Signal

SECTION 26 20 00 Page 24

Bonding Busbar (SBB) in rooms as indicated. Provide Outside Plant Grounding Busbar (OSPGB) with 32 holes for lugs, in each of the Demarcation rooms, that will be grounded and bonded to the building ground ring. OSPGB will ground and bond OSP cable coming into the building. The Signal Bonding Busbar (SBB): sized in accordance with the immediate application requirements and with consideration of future growth. Provide telecommunications grounding busbars with the following:

a. Predrilled copper busbar provided with holes for use with standard sized lugs. Size OSPGB with 32 holes for lugs.

b. Minimum dimensions of 6 mm thick by 50 mm wide for SBBs with length as indicated;

c. Listed by a nationally recognized testing laboratory.

2.26 MANUFACTURER'S NAMEPLATE

Provide on each item of equipment a nameplate bearing the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable.

2.27 FIELD FABRICATED NAMEPLATES

Provide field fabricated nameplates in accordance with the following:

a. Provide laminated plastic nameplates for each equipment enclosure, relay, switch, and device; as specified or as indicated on the drawings.

b. Each nameplate inscription: identify the function and, when applicable, the position.

c. Nameplates: melamine plastic, 3 mm thick, white with black center core.

d. Surface: matte finish. Corners: square. Accurately align lettering and engrave into the core.

e. Minimum size of nameplates: 25 by 65 mm.

f. Lettering size and style: a minimum of 6.35 mm high normal block style.

2.28 WARNING SIGNS

Provide warning signs for flash protection in accordance with ELOT HD 384 for switchboards, panelboards, industrial control panels, and motor control centers that are in other than dwelling occupancies and are likely to require examination, adjustment, servicing, or maintenance while energized. Provide field installed signs to warn qualified persons of potential electric arc flash hazards when warning signs are not provided by the manufacturer. Provide marking that is clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.

SECTION 26 20 00 Page 25

2.29 FIRESTOPPING MATERIALS

Provide firestopping around electrical penetrations in accordance with Section 07 84 00 FIRESTOPPING.

2.30 WIREWAYS

Material: steel 16 gauge for heights and depths up to 150 by 150 mm, and 14 gauge for heights and depths up to 305 by 305 mm. Provide in length required for the application with screw-cover IP10 enclosure per EN 60529 .

2.31 SURGE PROTECTIVE DEVICES

Provide parallel type surge protective devices (SPD) which comply with EN 61643-11 at the service entrance and panelboards. SPD must have the same short-circuit current rating as the protected equipment and shall not be installed at a point of system where the available fault current is in excess of that rating. Use Type 1 or Type 2 SPD and connect on the load side of a dedicated circuit breaker. Submit performance and characteristic curves.

Provide the following modes of protection:

FOR SINGLE PHASE AND THREE PHASE WYE CONNECTED SYSTEMS-

Phase to phase ( L-L ) Each phase to neutral ( L-N ) Neutral to ground ( N-G ) Phase to ground ( L-G )

SPDs at the service entrance: provide with a minimum surge current rating of 80,000 amperes for L-L mode minimum and 40,000 amperes for other modes (L-N, L-G, and N-G) and downstream SPDs rated 40,000 amperes for L-L mode minimum and 20,000 amperes for other modes (L-N, L-G, and N-G).

Provide SPDs per EN 62305 for the lightning protection system.

Maximum L-N, and N-G Voltage Protection Rating:

600V for 230V, single phase system 1,200V for 400Y/230V, three phase system

Maximum L-L Voltage Protection Rating:

1,200V for 230V, single phase system 1,200V for 400Y/230V, three phase system

The minimum MCOV (Maximum Continuous Operating Voltage) rating for L-N and L-G modes of operation: 120 percent of nominal voltage for 220 volts and below; 115 percent of nominal voltage above 230 volts to 400 volts.

Provide EMI/RFI filtering for each mode with the capability to attenuate high frequency noise. Minimum attenuation: 20db.

2.32 FACTORY APPLIED FINISH

Provide factory-applied finish on electrical equipment in accordance with the following:

a. Listed industry standards and the additional requirements as specified

SECTION 26 20 00 Page 26 herein.

b. Interior and exterior steel surfaces of equipment enclosures:

thoroughly cleaned followed by a rust-inhibitive phosphatizing or equivalent treatment prior to painting.

c. Exterior surfaces: free from holes, seams, dents, weld marks, loose scale or other imperfections.

d. Interior surfaces: receive not less than one…