16050

Basic Electrical Materials& Methods

SECTION 16050

BASIC ELECTRICAL MATERIALS AND METHODS

1. PART 1 - GENERAL

1.01 SECTION INCLUDES

A. The Work shall consist of furnishing and installation of all electrical materials as shown on the drawings and specified in this section.

1.02 REFERENCES

A. ANSI - American National Standards Institute

ANSI C2 National Electric Safety Code

ANSI C78.1 Dimensional and Electrical Characteristics of fluorescent Lamps, Rapid Start Types

ANSI C80.1 Specification for Rigid Steel Conduit, ZincCoated

ANSI C80.4 Specification for fittings for Rigid MetalConduit

ANSI C81 Electric Lamp Bases and Holders

B. SASO - Saudi Arabian Standards Organization

SAS 182 Standard Voltage and Frequency for ACtransmission and Distribution system

SAS 203 Safety Measure for Electrical Installations in Residential Premises

C. I EC - In t er n ati o nal Ele c tro t ec h nic a l c o mmi s sion

IEC 56 High Voltage Alternating Circuit Breakers

IEC 228 Conductors of Insulated Cables

IEC 298 AC Metal-Enclosed Switch gear and Control Gear for Rated Voltages above 1 KV and up to 72.5 KV

D. ASTM - American Standards for Testing and Materials

ASTM B 3 Specification for Soft or Annealed CopperWire

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ASTM D 256 Impact Resistance of Plastics andElectrical Insulating Materials

ASTM D 1785 Polyvinyl Chloride (PVC) Plastic Pipe, Schedule 40, 80 and 120.

ASTM D 2564 Solvent Cement for Polyvinyl Chloride (PVC) Plastic Pipe and Fittings.

E. IEEE - Institute of Electrical and ElectronicsEngineering

37.13a Low Voltage AC Power Circuit Breaker Used in Enclosures

F. N FPA - N a ti o nal Fire Pr o tec t ion As s oci a tion

NFPA 70 National Electrical Code

G. UL - Underwriters Laboratories Inc

UL 1 Safety Standard for Flexible Metal Conduit

UL 6 Rigid Metal Electrical Conduit

UL 20 Safety Standard for General Use SnapSwitches

UL 50 Safety Standard for Cabinets and Boxes

UL 67 Safety Standard for Panel boards

UL 83 Safety Standard for Thermoplastic InsulatedWires

UL 93 Safety Standard for Enclosed Switches

UL 198 Safety Standard for Fuses

UL 493 Safety Standard for Thermoplastic Insulated Underground Feeder and Branch Circuit Cables

UL 498 Safety Standard for Attachment Plugs andReceptacles

UL 508 Safety Standard for Industrial ControlEquipment

UL 514 Safety Standard for Electrical Outlet Boxes and Fittings

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UL 651 Schedule 40 and 80 PVC Conduits

H. Material and Systems with equal quality to ANSI, NEMA, NEC, and UL but made to SASO, IEC or ISO are acceptable and can be quoted for.

1.03 SUBMITTALS

A. Complete list of materials and equipment proposed for incorporation in the work:

1. List shall include manufacturer's name and material or equipment identification such as styles, types or catalog numbers to permit

ready and complete identification.

2. Include complete set of catalogs covering these submittals.

3. If catalog does not indicate compliance with appropriate standard as specified, provide additional certification as to compliance.

B. Shop drawings shall be submitted for equipment not readily identifiable by information named above and will be submitted for, but not limited to, cabinets and panel boards, busways and supports and

under floor ducts.

C. Testing Laboratory Label Required:

1. Label will satisfy requirement.

2. Listed Only: Submit copy of listing.

3. Unlisted or Labeled: Submit statements from certified testing laboratory or agency indicating that the item has been tested in accordance with required procedures and the product complies with all requirements.

D. Test Results: See specification for requirement of reporting tests of ground readings.

1.04 TRANSPORTATION, HANDLING AND STORAGE

A. All materials and equipments specified under this section shall be provided in manufacturer's original new and unopened packing bearing manufacturer's name and

label.

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B. Store materials not in actual use in covered and well- ventilated area and protect them from dirt, dust, moisture, direct sunlight and extreme temperatures.

C. For further requirements follow manufacturer's written instruction regarding storage and handling.

1.05 WARRANTY

A. Submit written guarantee signed by the contractor and manufacturer for the period of 5 years from the date of substantial completion. The guarantee shall cover the repair and replacement

of defective materials and workmanship as directed by the Engineer.

1.06 QUALITY ASSURANCE

A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of fire alarm systems and components, whose products have been in satisfactory use in similar services for not less than

5 years period, and be subject to approval of the Engineer.

B. Installer Qualifications: An experienced specialist sub-contractor who is authorized by the system manufacturer,

and subject to approval of the Engineer.

C. All the components and installations shall comply with the requirements of specified codes and standards.

2. PART 2 - PRODUCTS

2.01 CONDUITS

A. Interior Raceways: Raceways for wires inside the building, recessed in concrete and CMU, shall be rigid PVC, Schedule 40, conforming to NEMA TC 2 or UL 651 or ASTM D 1785, with proper type of fittings such as bell ends or terminal adapters. Rigid PVC conduits for use in wet walls and other locations as required by NEC 347 to be embedded in concrete. All surface-mounted/exposed raceways and inside drywalls shall be rigid galvanized steel conduit conforming to UL

6 or ANSI C80.1. Fittingsfor steel conduits shall conform to ANSI C80.4. Raceways for wires above suspended ceiling (except where cable trays are shown) shall be EMT conforming to


ANSI C80.3, with set screw fittings. Raceways for demountable partitions shall

be

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manufacturer's standard built inside the partitions.

B. Raceways for exterior underground installations, except where duct banks are shown, shall be direct burial type rigid PVC conduit, Schedule 80 conforming ASTM D 1785 or equivalent. Conduits under traffic areas shall be encased in concrete.

C. Flexible conduits shall be of galvanized steel conforming to ANSI/UL 1. Flexible conduits in wet areas shall be "Sealtight" type.

D. Duct Banks: Duct banks for underground utilities shall be of rigid PVC conforming to NEMA TC 6, Type II for direct burial and Type I for encased in concrete under traffic areas. Size shall be as shown on the drawings or as approved.

E. Unless indicated otherwise on the drawings, minimum size of conduits for interior installations shall be 20 mm diameter and for exterior installations shall be 25 mm diameter.

F. Cable Tray: Cable tray shall be medium duty, perforated, constant 25 mm deep channel with

return flanges. Cable tray and accessories shall be manufacturer's standard constructed of sheet steel,

hot-dipped galvanized after manufacture to ASTM A 123, Class B or BS 729, Code G. Cable tray shall be supplied with galvanized steel louvered covers (where required), support system and accessories, including

bends and tees, risers, connectors and reducers. Size and type of cable tray shall be as shown on the drawings. Install warning signs with black letters on yellow ground, in English and Arabic, at visible locations on/or near cable tray stating "WARNING! NOT TO BE USED AS WALKWAY, LADDER, OR SUPPORT FOR LADDERS OR PERSONNEL".

G. Computer Data System Network: A system of raceways will be provided throughout the building areas for the installation of computer cabling by others. The outlets (junction boxes) of the data outlets will be positioned adjacent to receptacle outlets, which will be connected to the UPS if required. The wireways will be consist of conduits, compartment metal trunking connected back to a patch panel. The patch panels will be interconnected by conduit, and an additional conduit will be positioned adjacent to the P.A.B.X for future external data transmission if required.

2.02 WIRES AND CABLES


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A. General: All wires and cables shall be manufactured as per IEC/DIN/BS/UL standards. All wires and cables shall have high conductivity copper conductors, solid up to 6 mm² and smaller wires and stranded for all other sizes of wire/cable. Stranding shall be as per ASTM, Class B concentric lay for AWG or MCM

size conductors and circular non-compacted as per IEC 228, Class 2 for metric

size conductors. Size of wire/cable shall be as shown on the drawings.

All telephone cables to be as per Saudi PTT Specifications MAT 001.

B. Medium Voltage Cables: 15 kV (voltage class), XLPE insulated three core

cables, sized as required, composed of circular standards compacted copper conductors, cross-linked polyethylene (XLPE), insulated90oC, armored, direct burial type conforming to theStandards mentioned above.

C. Feeder Cables

1. Shall be 600V/1000V copper conductor, XLPE cross- linked polyethylene insulated 90oC, conforming to Standards mentioned above and shall be installed as indicated on the drawings.

2. Shall be 600V/1000V copper conductor, PVC insulated85oC, Standards mentioned above.

D. Branch Circuit Wires for power and lighting shall consist of 600V/1000V copper conductors, Type NYA, PVC insulated, 85oC conforming to Standards mentioned above.

E. Exterior Lighting Cables:600 V/1000 V copper conductors Type NYA, XLPE insulated, 85oC conforming to the Standards mentioned above and shall be installed

in ducts as indicated on the drawings.

F. Direct Burial Cables: 600/1000V copper conductor, XLPE cross-linked polyethylene insulated, shield, steel wire armored with PVC oversheath.

2.03 BOXES AND FITTINGS

A. All boxes provided in the wiring and raceway system shall conform to ANSI/UL 514 and shall suit the devices installed.

B. Boxes for ordinary locations or flush installations shall be sheet steel, zinc or cadmium plated, to meet


code requirements. Boxes forflush exterior

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installations shall be gasketed and hot-dipped galvanized.

C. Boxes for exposed locations subject to humid conditions shall be of cast metal with threaded hubs. Finish shall be either cadmium/zinc electroplate covered or hot-dip galvanized. Boxes for exposed exterior locations shall be similar except with gaskets.

2.04 WIRING DEVICES

A. General: Unless indicated otherwise, all wiring devices shall conform to UL, CSA or NEMA Standards.

B. Device Plates: All the device plates shall be one-piece type and design as approved by the Engineer. Plates for all outlets to suit the boxes and devices installed. Device plates for telephone outlets shall be able to accommodate a telephone jack.

C. Single or Duplex Receptacles: 15 and/or 20 amperes, 220 volts, 60 Hz, two-pole, 3-wire, grounding type, with polarized parallel slots, conforming to ANSI/UL 498 and NEMA 6-15R configuration, EU/UD – universal type for single and duplex receptacles of 220V shall be applied whenever requested by the Engineer and without additional costs for MOI.

D. Single or Duplex Receptacles: 15 and/or 20 amperes, 220 volts, 60 Hz, two-pole, 3-wire, type NEMA 6-20R, EU/UD– universal type for single and duplex receptacles of220V shall be applied whenever requested by theEngineer and without additional costs for MOI.

E. Weatherproof Receptacles: Duplex receptacles mounted in flush or exposed cast metal boxes with gasketed weatherproof cast metal plates and caps

over each receptacle opening, conforming to NEMA WP-1, with ground fault circuit

interruption.

F. Disconnect Switches: Provide non-fused type; rating as indicated on Drawings and shall include 2 and 3 phases switches; 220 V/380 V; 30 A, 60 A, 100 A, 200 A and 400A current ratings; outdoor switches shall be weatherproof with NEMA 3 enclosure.

G. Wall Switches: Totally enclosed tumbler type, phenolic compound with bodies, complying with UL, CSA or ANSI/UL20; rated as indicated for use on alternating current only.


H. Dimmer Switches: Shall be rotary type, specification16050-7


grade, flush mounted, solid state circuitry, rated 20A,220V, 60 Hz. Finish shall be similar to that ofswitches/sockets in a particular room.

I. Push Buttons: Push buttons for lighting shall be general purpose, flush mounted, UL Listed, standard duty, non

illuminated, watertight, rated 10 A, 220V or as shown on the drawings. Push button stations shall be for normal ON/OFF operations.

2.05 EQUIPMENT CONNECTIONS

A. The limit of the work of the Electrical Contractor shall be up to the supply terminals of the equipment or device to be supplied by other trades. The Electrical Contractor shall be responsible for providing the power supply and wiring/cabling to the equipment or devices of other trades.

2.06 MOTOR CONTROL CENTERS

A. Motor control centers shall comply with the requirements of

ANSI/Ul 508 and shall include controllers and starters, HP rated. Items such as float switches, pressure switches and auxiliary relays shall have current and voltage ratings in

accordance with NEMA IC 1-18.20 for Class B relays. All items shall be for 60Hz and shall be UL listed.

2.07 CONTACT IN MISCELLANEOUS CONTROL DEVICES

A. Items such as float switches, pressure switches and auxiliary relays shall have current and voltage ratings in accordance with NEMA IC 1-18.20 for Class B relays. All items shall be for 60 Hz and shall be UL listed.

2.08 LOW VOLTAGE MAIN DISTRIBUTION BOARD

A. Low voltage main distribution board assembly shall be executed in free-standing metal cubicle bolted or welded steel framing of sufficient strength to maintain alignment and withstand rated I.C. Circuit

breakers shall comply with the requirements mentioned earlier in the section. LV switchboard

shall be complete with required controlsand accessories. The switchboard degree of

protection shall be IP 40 or equivalent and shall be manufactured in accordance with IEC, DIN-VDE or equivalent ANSI/UL standards.

2.09 PANELBOARDS


A. Lighting and appliance branch circuit panelboards shall16050-8


be circuit breaker equipped, Type 1, complying withANSI/UL 50.

B. Distribution, power or feeder panelboards shall be circuit breaker equipped, Type 1, dead front construction, complying with ANSI/UL 67.

C. Unless otherwise indicated on the plans, minimum circuit breaker interrupting capacities(RMS symmetrical) shall be 15,000 amperes for single-phase240V or 380V sub-panels and 50,000 for main distribution panels. Breaker trip ratings shall be as shown. For panels with fault levels in excess of 50,000 amperes, a current limiting incoming breaker shall be installed to limit the short circuit current amperes to the above level. Breaker trip ratings shall be as shown on the drawings.

Multi-pole circuit breakers shall be of the common trip type having a single operating handle. Tie handles are not acceptable. Circuit breakers shall bolted type. Plug-in type circuit breakers are not acceptable.

D. Panelboardsshall not exceed 1950 mm in height and shall be so mounted that the height of the top operating handle shall not exceed 1950 mm

from the floor.

E. Directories shall be typed to indicate load served by each circuit and mounted in

holder behind protected covering.

2.10 SAFETY SWITCHES, CIRCUIT BREAKERS, AND FUSES

A. Safety switches shall have NEMA 1, indoor type, general purpose enclosure, metal nameplates, front cover mounted that contain switch type, catalog number and HP rating. Handle with position easily recognizable and padlockable in the OFF position, visible blades; non-teasible, position,

quick-make quick-break mechanism, and switch assembly plus assembly with an operating handle as an integral part of the enclosure base. NEMA 3R type enclosure will be used for outdoor use.

B. Molded case circuit breakers shall be bolted-type.Multi-pole breakers shall have single operating handlecommon trip. Breakers shall be operated by a toggletype handle and shall have a quick-make quick-breakmechanism that is mechanically trip free so that thecontacts cannot be held closed against short circuits


and abnormal currents. Contacts shall be of non-welding

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silver alloy.

C. Ordinary low-voltage fuses shall be cartridge type, one-time use and shall carry UL label.

2.11 MOTOR DISCONNECT MEANS

A. Each motor shall be provided with a heavy-duty NEMA 3R for outdoor disconnection means and NEMA 1 for indoor disconnection means as required by ANSI/NFPA 70.

B. For single-phase motors, a single or double pole toggle switch, rated only for alternating current, shall be acceptable for capacities less than 50 amperes, provided the ampere rating of the switch is at least125% of the motor rating. Switch shall be lockable type.

C. Enclosed safety switches shall be horsepower rated in conformance with ANSI/UL 98.

D. Switches shall disconnect all ungrounded conductors.

2.12 GROUNDING RODS

A. Refer to Section 16452 - GROUNDING.

2.13 LIGHTING

A. Lamps of the proper type, wattage and voltage rating shall be furnished and installed in each fixture.

B. Incandescent lamps shall be for 220-volt AC, inside frosted, screw base, 16A maximum

protection, unless otherwise specified.

C. Fluorescent lamps shall be for 220-volt AC, bi-pin type, with cool white color characteristics, shall not require starter switches, and shall comply with ANSI C78.1.

D. Fluorescent lamps ballasts shall be from 18 watts up to65 watts with heat lighting range from 20 to 80centigrade and shall be High frequency electronicballasts. Emergency lighting units shall be equippedwith Fluorescent lamps as standard and LED type asoptional only.

E. High pressure mercury vapor discharge lamps shall be for 220-volt AC, screw base.

F. Types of lighting fixtures shall be as shown on the16050-10


drawings.

2.14 DIMMING SWITCHES

A. Dimming Switching Modules: Each module shall be a totally enclosed, with separate rear connectors for power and for control signals. Dimming and switching modules shall be continuously rated for a maximum of20A of tungsten lamp load, or transformer-fed lighting load.

2.15 LIGHTING CONTACTORS

A. Electrically-held type with silver alloy double break power contacts capable of continuously carrying, making and breaking any load within the rating

of the contactor without the assistance of auxiliary arcing contacts.

Auxiliary arcing contact are not acceptable. All contacts shall be removable without disturbing line or load wiring. Operating coil shall function on 60 Hz power; voltage as required. Contactors

shall be in general purpose sheet metal enclosures. Lighting contactors may be included

in the same enclosures as the corresponding panelboard.

2.16 INTELLIGENT MANAGEMENT SYSTEM (EIB)

A. General: Shall be PC based proprietary system to control lighting and dimming through out the building. System shall control through the bus line, which shall be conventional telecommunication cable.

EIB cable shall be fully comply with EIB regulations. Contractor shall provide EIB system of the latest EIB technology available at the time of construction. The system shall consist of, but not limited to the following:

B. Bus couple, FM: Allows connection of the following devices to the:

1. Push buttons (1,2, 4-fold)2. Dimming/shutter switches3. Motion sensors4. RS 232 interface, flush mounted5. Infrared interface6. Operating and display elements: LED and button

C. Push button, FM, 1-fold: This device links switching commands to the bus for switching electrical loads on and off. With 2-colored LED for display of readiness for working and switching state. Setting of color and function of the LED via software.


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D. Push button, FM, 2-fold, 4-fold: This device links switching commands to the bus for switching and dimming electrical loads. With 2-colored LED for display of readiness for working and switching state. Setting of color and function of the LED via software.

E. Dimming switch, FM: This device links switching commands to the bus for dimming and switching on and off lighting. Setting of color and function of the LED via ETS software.

F. Motion sensor, FM: 180 degree detection angle. For bus coupler. For sending ON commands to actuators via the bus. The switching mode is determined in the actuator (staircase lighting timer function). Twilight sensor and overshoot time are adjustable. Motion control for ON/AUTOMATIC/OFF.

G. Motion sensor, multi lens, FM: 180 degree detection angle. For the bus coupler.

For sending ON commands to actuators via thebus. The switching mode is

determined in the actuator (staircase lighting timer function). Twlight sensor

and overshoot time are adjustable. Motion control for ON/AUTOMATIC/OFF.

Suitable for various mounting heights (1.1 to 2.5m) and thus larger detection areas shall

be possible (max.10x15m). The device to installed at a safe height to protect against vandalism.

H. IR hand-held transmitter: Hand remote controller for controlling the IR interface as well as 5 receivers of the IR-system. 10 loads can be switched in 2 address groups (1-5, 6-10), channel switchover.Programming and selection of 2 memory stores. ALL OFF function

Transmission range : Frontal approx. 15mSupply : 4 Alkali manganese batteries

I. Cover frame: For completing the operating and display elements of push

buttons, dimming/switches, motion sensors, room temperature thermostats, RS 232 interface flush mounted and infrared interface.

J. Bus coupler, FM: Bus coupler for triton display witch varian with fixing jumper for

screw mounting in conventional switch boxes.

K. Switch/dimmer actuator, MDRC: Modular


device for installation in the distribution board allows switching and dimming of lighting

circuits with an electronic

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ballast via the bus. The dimming telegrams are converted into a signal 1 ... 10 V that corresponds to0 ... 100% brightness. The device operates passively i.e. its electronic ballast supplies the current. The device does not require an additional power supply up to a current of 20 mA. A relay contact serves to switch the lighting circuit on and offDepending on the application, various functions can be selected with the aid of the parameterization software e.g.- Actuating time 0...100% brightness-min/max brightness- Absolute dimming value

L. Power supply, with choke, 640mA, MDRC: Generates and monitors the bus system voltage with integrated choke for disconnecting the bus line from the power supply, with reset switch for freeing up

the bus line and resetting the bus devices is connected to it. With 29VDC output for supplying a further line (e.g. main line). The device is connected via a busterminal and 4 pole connector. This line must be disconnected by its own choke.

M. Choke, MDRC: Disconnects the bus line from the power supply. With reset switch for freeing up the bus line and resetting the bus devices connected to it. Used in conjunction with power supply DV/S 30.640 device for feeding an other line.

N. Interface RS232, MDRC: Connects a PC to the bus in order to configure, parameterize and commission the installation in conjunction with

the project planning and commissioning software.

O. Interface TS232, FM: In conjunction with the FM bus coupler this device connects a PC to the bus in order to configure, parameterize and commission

the installation in conjunction with the project planning and commissioning software.

P. Line coupler, MDRC: Isolates the lines electrically from each other. As a data flow filter, it only lets data telegram through if they are also intended for bus devices in the lines. Utilization

as line or area coupler is done by the parameterization software ETS.

Q. Time switch with week program, 2-channel, MDRC: The week program with 24 memory

spaces and free block information of the weekdays controls electrical load groups on

a time-dependent basis via two channels and via bus.


Every channel can switch or transmit a brightness value.

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The following functions can be set or selected with the aid of parameterization software:

- Switching/dimming- Switching ON/OFF/OVER- Brightness value- Initialization following bus failure- Initialization delay

Time basis : Quarts Running accuracy : <1s/day Running reserve : 6 years

R. Time switch with week program,4-channel, MDRC: The week

program with 128 memory locations, free block formation of the weekdays, "1 x switching" for special and public holidays, non-volatile memory and pulse switching (1-59s) controls electrical load groups on a time-dependent basis via 4 channels and via bus.

Every channels can switch or transmit a brightness value. The combination of the 4

channels allow 16 different time-controlled brightness stages to be transmitted.

The following functions can be set or selected with the aid of the parameterization software:- Switching/dimming- Switching ON/OFF/OVER- Brightness value- Channel combination- Initialization following bus failure- Initialization delay

Time basis : Quartz Running accuracy : < 1 s/day Running reserve : 3 years

S. Bus Terminal: Allows connection of the bus devices to bus, and also enables the bus line to be looped through or branched. It will be possible to connect the bus devices without separating the bus line.

T. Diagnosis Module, 2-pole, MDRC: The Diagnosis module is used to quickly checked the

most important bus functions in the distribution box. The bus voltage and telegram traffic, as well as power supply faults, are displayed with LED's.

U. Binary relays shall be equiped with manual automatic switch indicated operation status and shall be also


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equiped with 200 µ farad at least.

V. EIB WinSwitch (Central Software): Central software for visualization, control, documentation and automation tasks. The software consists of compilation software and independent run time software. The compilation software is for generating, parameterizing and editing project data. The project data can be stored in a database. A project can consist of up to 1024 screen pages. An image change is performed with special buttons which are part of the image, so that

the sequence of the image is variable when creating the project,but cannot be circumvented in the run time program.

Elements which react to telegram events, times or user actions can be integrated into the images. Each element has a direct connection to the system clock and to the EIB server. As a result, all elements are also updated if they do not appear on the screen. The triggering of a telegram by the operator is automatically transmitted to all

elements which are parameterized to the triggered address. An image can accommodate more than1000 elements. Elements which generate automatic subsequent switching operations on the basis of telegram events or times also operate in images which are currently not being displayed.

An image change has no initialization time. After the new image is built up, all element states are directly and correctly displayed and are

available for operation.

During parameterization, the addresses are set with the main group/sub-group, as is usual with EIB. In addition to the main groups of 0 to 15 used by EIB, internal program addresses of 16 to 31 are also made available. These addresses are for the program internal data exchange between the elements, without overloading the EIB.

The project shall have password protection, up to 15 persons can log onto the runtime program as operators with independent passwords. The names and passwords must have no more than 10 characters. No distinction is made between upper case and lower case. Each of these up to 15 persons has a user level of 0 to 5, depending on authorization. The person can log off again after a session. If a person has logged on and no operation takes place over a

set time, this person is automatically


logged off. A person with user level 5 has complete freedom within the program, including the

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freedom to change the passwords and program parameters and to terminate the program.

Each element in a project also has a user level from 0 to 5. A logged-on operator can only use the elements which are on a lower or equal user level to his. This also refers to image changes. Elements with user level0 can also be used without logging on.

Each element whose display or function depends on the state of an address can be parameterized so that the current state is checked after the start of the runtime program.

W. EIB WinSwitch (Protocol Switch): Element for error messages and activating audible signals. The element is activated by corresponding group address. if an image is not activated, the software automatically jumps to the graphic in which the error message is triggered.

X. EIB WinSwitch (Analog Display): Display of analog values in 1 byte, 2 byte, or EIS 5 standard

as numbered value, as pointer instrument or as bar display with value-dependant color display.

Parameterization enables the value to be scaled automatically.

Y. Computer Hardware Requirements: The PC shall be an IBM Compatible with the following hardware requirements as a minimum:

1. System Configuration: Intel 700 MHz Pentium III processor on Intel motherboard with 2 on-board serial ports and oneon-boardbi-direct parallel port with ECP/EPP support; 512 KB pipelined burst cache memory; 128 MB SD RAM; one floppy drive 3-1/2 inch 1.44 MB; one CD drive 48X; 30 GB hard drive with the necessary controllers; PCI 64-bit 3D video SVGA graphic card with 32 MB EDO; compatible power supply and voltage stabilizer.

2. Color Monitor: 17" SVGA color monitor; low resolution type.

3. Keyboard: Microsoft 101-keys English/Arabic keyboard.

4. Mouse: Microsoft mouse with the necessary drivers and supporting software.

5. Terminal Software: Operating system shall employ Microsoft "Windows" software and


enable multiple programs to run concurrently. All the basic

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features shall be made available to the operator (subject to security password level) via pull-down window menus.

2.17 PHOTOELECTRIC CELL

A. Photocell shall be flush mounted, weatherproof device for control of outdoor lighting as shown on the drawings. There shall be a detector which reads

and translates the intensity of light in terms of switching on and off. It shall be made of cadmium sulphic cell which is a semi-conductor

device whose electrical resistance varies with the intensity of light falling on it.

B. A snap-action single pole switch shall be controlled by the current passing through the cell. A heater mounted on a bimetal strip shall be connected in series with the cell and the two components shall be connected to a power source. Variation in the resistance of the cell due to changes in daylight intensity varies the heating effect of the bimetal strip and by careful calibration the switch-on point will be selected.

C. The cell shall be encased in an impact resistant translucent cover to protect it from damage and ultraviolet rays. The

photoelectric cell shall be completely weatherproof and not effected by moisture

vibration or changes in temperature. Photocell shall be250V, single pole, single throw, rated for load served. ON-OFF operation shall be field adjustable.

2.18 LIGHTING POLES

A. Provide manufacturer's standard galvanized steel lighting poles of sizes shown on the drawings. Thickness of steel sheet and cross-section of the pole shall be suitable for the height of the pole and wind velocity of 160 km/hr blowing in most

unfavorable direction. Poles shall be complete with all required accessories and luminaire brackets. All components of poles shall be hot dipped galvanized after completion of fabrication. Minimum thickness of zinc coating shall be 500 gm/m²on both the inside and outside faces of the pole.

2.19 MARKER TAPE

A. Shall be detectable polyethylene plastic tape with metallic core, 150 mm width, 100 micron nominal thickness and obtained from approved supplier. It shall be continuously printed in Arabic and


English16050-17


alternately with words CAUTION; BURIED ELECTRIC/ TELEPHONE LINE BELOW, as appropriate.

2.20 MANHOLES AND HANDHOLES

A. Shall be of cast-in-place reinforced concrete; sizes as shown on the drawings. Concrete shall be Class 30 conforming to Section 03300 - CAST-IN PLACE CONCRETE, with Type V cement. All the interior surfaces shall be coated with (two coats) 650 micron coal tar epoxy. All exterior surfaces shall have single

layer, fully bonded, 4 mm thick waterproofing membrane with 3 mm thick bitumen impregnated protection board.

B. Manhole Covers: Manhole covers and frames shall be of gray cast iron casting, heavy duty for traffic areas and medium duty for

other areas, all complying with ASTM A48 or BS 497, Appendix A. Type and size shall be as shown on the drawings or selected by the Engineer. The words "ELECTRIC"/ "COMMUNICATION " as appropriate, in Arabic and English shall be cast in covers.

C. Ladder Rungs (If required): Provide manufacturer's standard ladder rungs as shown on the drawings with dimensions, spacing

and details as shown. Rungs shall be of 19 mm diameter solid galvanized steel bar molded to the

required shape. Provided with non-slip surfacing on top of each rung. Ladder rungs shall be installed during casting of reinforced concrete walls.

2.21 EXCAVATION AND BACKFILLING

A. Refer to Section 02200 - EARTHWORK.

3. PART 3 - EXECUTION

3.01 GENERAL CONSIDERATIONS

A. The installation shall conform to the applicable provisions of National Electrical Code and National

Electrical Safety Code.

B. The drawings indicate the extent and general location and arrangement of equipment, conduits and wiring.

1. The Contractor shall study the drawings and details and in supplement to the above mentioned drawings, all works to be done shall be in accordance with


approved shop drawings. All outlets and equipments shall be properly located and readily accessible.

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2. Lighting fixtures, equipment and outlets shall be located to avoid interference with mechanical or structural features and symmetrically located in coordination with ceiling systems.

3. Major equipment shall be assembled and installed in accordance with the manufacturer's instructions.

C. The Contractor shall provide power supply to all electrically powered equipment or devices as required under other Sections of the Specifications and/or as shown on the drawings. The Contractor shall be responsible for power supply cables and wiring up to the power supply terminals or disconnect devices (if any) of the particular equipment or device.

D. Should the Contractor make equipment substitution or use equipment that may result in increased loads and changes in feeder and raceway

sizes, and result in larger protective equipment, such changes shall not be considered an additive change order.

3.02 DIRECT BURIAL CABLE INSTALLATION

A. Cables shall be laid out along the trench from moving reels. The cables shall be laid in the trench to allow for expansion and contraction.

B. Cables operating above 600 volts shall be buried at a minimum depth of 1000 mm.

C. Cables shall have a horizontal separation of 1000 mm minimum from water and sewer pipelines.

D. Precast concrete blocks shall be provided over the primary cables. Concrete blocks shall

be as detailed on the drawings. Caps shall be within 200 mm above the top of the cable, and shall be placed on sand which has been hand placed and compacted around the cables. Concrete for all caps shall be Type V cement and have a compressive strength of 14 MPa at 28 days. A continuous orange or yellow colored plastic maker tape minimum 150 mm wide shall be placed above the concrete cap 300 mm below grade level. The tape shall be imprinted with the words "Caution Buried Electric Line Below" in Arabic and English spaced 1500 mm on center.

E. Concrete cable markers, minimum 600 mm long and 200 mm square shall be placed at all changes in direction and at all splices/joints, and as noted on plans.

F. Primary, secondary and street lighting cables crossing


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under street, driveways and other paved areas shall be installed in reinforced concrete encased duct banks.

G. Primary cables shall be terminated with heat shrinkable termination or other types as per cable manufacturer's recommendations. Avoid splices as much as possible.

H. The contractor shall submit names of their qualified MV cable jointers/splicers and make a sample splice/demonstration in the presence of the Engineer prior to start of cable splicing for approval.

3.03 WIRING METHODS

A. Conduits

1. Conduit system shall be installed in accordance with Articles 346 and 348 of ANSI/NFPA 70.

2. Minimum size of raceways for branch circuit wiring shall be 20 mm diameter.

3. Raceways shall be concealed within walls, ceilings and floors where possible and shall be kept 150 mm away from parallel runs of flues, steam or hot water pipes.

4. Raceways shall be supported and secured at intervals of not more than 2440 mm.

5. Exposed raceways shall have runs installed parallel or perpendicular to walls, structural members or intersections of vertical planes and ceilings.

6. Field made bends and offsets for steel conduits shall be made with approved hickey or conduits bending machine.

7. Changes in direction of runs shall be made with symmetrical bends or cast fittings.

8. Deformed raceways shall not be installed.

9. Trapped raceways in damp and wet locations shall not be permitted.

10. Care shall be taken to prevent the lodgment of plaster, dirt or trash in raceways, boxes, fittings and equipment during the course of construction.

11. Clogged raceways shall be entirely freed of obstructions or shall be replaced.


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12. Steel conduits shall be fastened to all sheet metal boxes and cabinets with locknuts.

13. Bushing shall be installed on the ends of all steel conduits and shall be of the insulating type where required by ANSI/NFPA 70. Bell ends or terminal adapter and bushings shall be installed on the ends of all PVC conduits.

14. Raceways crossing expansion joints in concrete slabs shall be provided with suitable expansion fittings or other suitable means shall be provided to compensate for

the building expansion or construction.

15. Wooden plugs inserted in concrete or masonry shall not be acceptable as a base for raceways fastenings, nor shall raceways or pipe straps be welded to steel structures.

16. Raceways shall be secured by pipe straps or shall be supported by wall brackets,

strap hangers or ceiling trapezes, fastened by wood screws on wood, toggle bolts

on hollow masonry units, expansion bolts on concrete or brick and machine screws or welded threaded studs on steel work.

17. Nail-type nylon anchors or threaded studs, driven in by a powder charge and

provided with lock washers and nuts are acceptable in lieu of expansion

bolts or machine or wood screws. Conduits larger than 25 mm diameter shall not be installed inside structural masonry slabs.

B. Stubbed Conduits

1. Conduits for connection to free standing equipment shall be provided with a short

elbow and an adjustable brass top of coupling of brass or bronze threaded inside

for plugs, set flush with the finished floor.

2. Wiring shall be extended in rigid threaded conduit to equipment except where required, flexible conduit not exceeding 300 mm length may be used 150 mm above floor.

3. Screwdriver operated threaded flush plugs shall be installed in conduits from

which no equipment connections are made.


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C. Flexible Connections of Short Length

1. Flexible connections shall be provided for all motors and equipment subject to vibration or movement.

2. Liquid-tight flexible conduit shall be used in all wet locations, or where

motors are installed exposed in mechanical equipment rooms.

D. Wires and Cables

1. Conductors in raceways shall be thermoplastic insulated copper unless otherwise specified or indicated.

2. Wire connectors of insulating material or solderless pressure connectors properly taped shall be utilized for all splices where possible.

3. Soldered mechanical joints, insulated with tape shall be kept to a minimum.

4. Conductor sizes shall not be less than the sizes indicated.

5. All wire joints shall be covered with two thicknesses of insulating tape, covered

with two layers of friction tape. All tapes shall be applied half-wrapped.

6. Branch circuit conductors shall not be smaller than4 mm² except for circuits of more than 30.48 m frompanel to load center, 6 mm² shall be used.

7. Class 1 remote-control conductors shall be not less than 2.5 mm² for control wires.

8. Coding and Identification

a. Conductor identification of branch circuits shall be by color coding. Coding shall be as follows: Phase A = red, Phase B = yellow, Phase C = blue, Neutral = Black, Ground = green.

Conductors smaller than 16 mm² must have colored insulation. Conductors 16 mm² and larger may be wrapped with colored tape at all boxes, panels, and switchboards.

b. Control circuit conductor identification shall be made by color-coded insulated conductors,


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plastic coated self-sticking printed markers, permanently attached stamped metal foil markers or approved equivalent means.

c. Conductor identification shall be provided within each enclosure where a tap splice or

termination is made.

d. Control circuit terminals of equipment shall be properly identified.

e. Terminal and conductor identification shall match that shown on approved shop

drawings. Hand lettering or marking shall not be acceptable.

E. Boxes and Supports

1. Boxes shall be provided in the wiring or raceway systems wherever required for

pulling of wires, making connections and mounting of devices and

fixtures.

2. Boxes for metallic raceways shall be of cast metal hub type when located in normally wet locations, when surface mounted on

exterior surfaces, in hazardous areas and when installed exposed up to2130 mm above exterior floors and walkways.

3. Boxes in other locations shall be sheet steel or plastic.

4. Each box shall have the volume required by ANSI/NFPA 70 for the number of conductors enclosed in the box.

5. Boxes for mounting lighting fixtures shall not be less than 100 mm except the smaller boxes may be used if required by the fixture configuration.

6. Boxes installed for concealed wiring shall be provided with suitable extension rings or plaster covers, as required.

7. Boxes for use in masonry walls shall be square cornered tile type or standard boxes having square cornered tile type covers.

8. Cast metal boxes installed in wet locations and boxes installed flush with the outside of exterior masonry surfaces shall be gasketed.


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9. Separate boxes shall be provided of flush or recessed fixtures when required by the fixture terminal

operating temperature, and fixtures shall be readily removable for access to boxes unless ceiling access panels are provided. In suspended ceilings, all fixture housing shall be supported

properly from structural members.

10. Anchorage and Support

a. Types of fasteners and methods of fastening in general shall be as specified herein before for conduits.

b. In overhead spaces, cast metal boxes threaded to raceways shall not necessarily be separately supported except where

used for fixture support. Cast metal boxes having threadless

connectors and sheet boxes shall be supported directly from the building structure or by bar hangers.

c. Where bar hangers are used, the bar shall be attached to raceways on opposite sides of the box and shall be supported

with an approved type fastener not more than 356 mm from the box.

d. The Contractor shall refer to other drawings for information concerning depths of reinforcing steel to avoid conflict when anchoring.

F. Boxes for Use with Raceways System

1. Boxes shall not be less than 38 mm deep except where shallower boxes required by structural conditions

are approved.

2. Boxes for other than lighting fixture outlets shall not be less than 100 mm square except that 100 mm x50 mm boxes may be used where only one raceway enters the outlet.

G. Pull Boxes

1. Pull boxes shall not be less than the minimum size required by ANSI/NFPA 70 and shall be


constructed of galvanized steel or cast metal boxes.

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2. Boxes shall be furnished with screw fastened covers.

3. Where several feeders pass through a common pull box, thefeeders shall be tagged to

indicate clearly the electrical characteristics, circuit number and panel

designation.

4. Feeders of different voltages must be in separate boxes; also, signal circuits must be in a separate box from power circuits.

3.04 DEVICE PLATES

A. Device plates shall be installed with all four edges in continuous contact with finished wall surface without use of mats or similar devices.

B. Plaster fillings shall not be permitted.

C. Plates shall be installed vertically and with an alignment tolerance of 4 mm.

3.05 TELEPHONE SYSTEM RACEWAYS

A. Where indicated, they shall be installed in accordance with requirements that no length of run shall exceed:

1. 22.86 m for 20 mm.

2. 45.73 m for 25 mm or larger sizes.

3. Raceways shall not contain more than two 90o bends or the equivalent.

B. Additional pull or junction boxes shall be installed to comply with the foregoing limitation whether indicated or not.

C. Inside radii of bends in conduits of 25 mm size or larger shall not be less than 10 times the nominal diameter.

D. Nylon wire or pulling twine not less than 2.5 mm² shall be installed in all branch raceways that are to remain empty with not be less than 203 mm of slack left at each other end.

3.06 TESTS

A. After the interior wiring system installation is completed, the Contractor shall conduct an operating


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test for approval.

B. The equipment shall be demonstrated to operate in accordance with the requirements of the specification.

C. Testing of the grounding system shall be made as specified in Section 16452 - GROUNDING.

D. Ground resistance (Megger) tests shall be performed on lighting and power circuits.

E. Cable and circuit breaker testing, and testing in general shall be as per the National Electric Code.

F. All phase balancing and loading tests shall be accomplished and data of such tests shall be submitted to the Engineer.

END OF SECTION

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