WR - RES/19-20

ELECTRICAL SPECIFICATION
REV 00 – AUGUST. 2024

CLIENT: H.E. Dr. KHALID MOHAMED A AL-ATTIYAH

PROPOSED 3B+G+26 FLOOR

RESIDENTIAL TWIN TOWERS
ON PLOT WR - RES/19-20
LUSAIL, DOHA, QATAR
 Table Of contents

DIVISION 26 - ELECTRICAL
260000 GENERAL PROVISIONS FOR ELECTRICAL INSTALLATION. 7
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
PART 4: APPROVED PRODUCTS
260100 SCHEDULE FOR APPROVED SUPPLIERS OF EQUIPMENT 10
260519 CABLES AND SMALL WIRING 6
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
260526 EARTHING AND BONDING FOR ELECTRICAL SYSTEMS 6
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
260533 CODUITS AND CONDUIT BOXES 8
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
260536 CABLE TRAY, TRUNKING AND ACCESSORIES 5
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
260923 LIGHTING CONTROL SYSTEM 3
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
261200 DRY TYPE TRANSFORMER AND ACCESSORIES 5
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
262300 LV FACTORY BUILD ASSEMBLIES 8
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION

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262413 SUB MAIN DISTRIBUTION BOARD AND DEVICES. 4

PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
262416 DISTRIBUTION BOARDS AND DEVICES. 5
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
262419 MOTOR-CONTROL CENTERS 5
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
262726 WIRING ACCESSORIES AND GENERAL POWER 6
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
263213 STANDBY DISESL GENERATOR SET 9
PART 1: GENERAL
PART 2: EXECUTION
263323 EMERGENCY LIGHTING 5
PART 1: GENERAL
PART 2: PRODUCTS
263353 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS 5
PART 1: GENERAL
PART 2: PRODUCTS
263533 POWER FACTOR CORRECTION CAPACITORS 4
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
263600 TRANSFER SWITCH 3
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
264113 LIGHTNING PROTECTION 3
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION

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265100 LIGHT FIXTURE AND ACCESSORIES. 7

PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
DIVISION 27 - COMMUNICATION

270526 EARTHING AND BONDING FOR ELV SYSTEMS 2

PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION

271100 TELEPHONE AND COMMUNICATION SYSTEM 6

PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
274133 CENTRAL ANTENNA TELEVISION SYSTEM 9
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
275116 PUBLIC ADDRESS SYSTEM 6
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXAMINATION
275123 INTERCOMMUNICATIONS AND PROGRAM SYSTEMS 7
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXAMINATION
DIVISION 28 – ELECTRONIC SAFTEY AND SECURITY
281300 ACCESS CONTROL SYSTEM 2
PART 1: QUALITY ASSURANCE
PART 2: DESCRIPTION
PART 3: OPERATION
PART 4: HARDWARE
282100 CLOSED CIRCUIT TELEVISION SYSTEM 10
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
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283111 ADDRESSABLE FIRE ALARM SYSTEM 7

PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION
283173 EMERGENCY VOICE ALARM SYSTEM 6
PART 1: GENERAL
PART 2: PRODUCTS
PART 3: EXECUTION

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 SECTION 26 00 00
GENERAL PROVISIONS FOR ELECTRICAL
INSTALLATION

SECTION 260000

GENERAL PROVISIONS FOR ELECTRICAL INSTALLATION

PART 1 - GENERAL

1.1 SUMMARY

A. This section is to be read in conjunction with relevant items of all sections and drawings issued for this proposed
works.

B. This specification to be read in conjunction with QCS 2014 and in case of conflict between contract documents, and the
standards and codes compliance shall be the more stringent amongst the above.

C. In the adoption of standards and requirements, the Contractor shall take the following precedence:
1. Drawings
2. Specification
3. Bill of Item or Quantities (BOQ)
4. Local codes of practice
5. International standards and requirements
6. Engineer’s decision

1.2 SCOPE OF WORK

A. These Specifications cover the following systems that are intended to be used for the Project in accordance with the
Drawings and as directed and approved by the Engineer:
1. Indoor and outdoor Lighting Distribution System
2. Lighting Control System
3. Power Distribution System
4. Standby Generator and Distribution System
5. Earth / Grounding System
6. Fire Alarm and Emergency Lighting Systems
7. Mass notification ( Evacuation ) System
8. Telephone and Communication System
9. Background Music and Public Address System
10. TV System
11. Access control
12. CCTV system
13. INTERCOM
14. Other Misc. System
15. Any related builders work

1.3 GENERAL INSTRUCTIONS

A. Works under this section shall be governed by Conditions of Contract & Relevant applicable Sections.

B. The contractor will be deemed to have, prior to tender, studied the full working drawings of project, visited the site and
to have acquainted himself with all relevant details affecting his work.

C. The Contractor shall bring to the Engineers attention, prior to submitting his tender, in writing, any discrepancies
between the Contract Documents and the above, no claims for money or extension of time shall be entertained for such
discrepancies after award of Contract.

D. The work shall include design check, supply, installation, testing, commissioning, adjusting and setting to work.
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E. By virtue of carrying out a check on the complete design, the contractor is to assume full responsible for the correct
functioning of the system and to carry any liabilities or guarantee as may necessary to protect all parties in this regard.

F. Contractor shall be responsible for coordination of all engineering services and liaison work with local authorities for
service connection.

G. Contractor shall include for any items not shown, but required by satisfactory operation of system comply with local
authorities.

H. Coordinate with Structural drawings for exact opening of floors, roof, beam, etc. to Engineer approval.

I. The Contractor contract shall include for client staff training in the Operation and Maintenance of the works.

J. The Contractor contract shall include for promptly rectify defects during the maintenance period.

K. All works of a temporary or permanent nature which are by implication associated with the works specified, and by
accepted standards of good practice and customs of the trades to be employed by the Contractor, and which are
necessary and essential to render the Building Services Installations complete shall also be included in the Tender.

L. Any item not covered in this section shall apply equally and wherever appropriate to any item in any other section of
this Volume.

1.4 REGULATIONS AND STANDARDS

A. The works shall be installed, tested and commissioned in accordance with latest issue of:
1. Qatar construction standard (QCS).
2. Regulation for Electrical Installations as issued by the Qatar General Electricity and Water Corporation
(QGEWC) Qatar.
3. Regulation for Electrical Installations as issued by the Institution of Electrical Engineers (I.E.E).
(for points not included in QGEWC Regulations)
4. National Electrical Code (N.E.C) issued by National Fire Protection Association (NFPA).
5. Standards relating to Electrical Installations and equipment as issued by International Electromechanical
Commission (I.E.C.) and British Standards Institute (BSI).
6. Chartered Institution of Building Services (CIBS) recommendations.
7. Regulation for Fire Detection System & Life Safety and Mass Notification each to be according NFPA section.
8. Local Fire Authority Regulations issued by Qatar Civil Defense Department (QCDD).
9. Local Telephone Authority Regulation (OOREDOO).
10. General & Technical Specifications of the Security Surveillance System issued by MOI.

B. In case of conflict among the referenced standards and codes, the more stringent provision will govern by engineer
direction.

C. If any redesign or modification of the Works is necessitated by the adoption of another approved code or due to Local
Electrical Authorities or safety instruction requirements, the extra cost incurred (if any) both for redesign and material
shall be borne by the Contractor.

All equipment and materials supplied for this contract shall be manufactured in strict compliance with the latest
relevant recommendations of the IEC, if available. Otherwise they shall comply with the latest relevant Euronorm
specifications unless otherwise specified or approved.

1.5 INTERFERENCE AND ERRONEOUS LOCATIONS

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A. The Contractor shall verify on Site all data and final locations of work done under other Sections of these
Specifications, required for arranging the Electrical Works.

B. In case of interference with other works or erroneous locations with respect to equipment or structures, the Contractor
shall supply all labors and materials necessary to complete the work in an acceptable manner.

1.6 CLIMATIC CONDITIONS

A. The Climate of Qatar in the summer months is hot and humid, a humidity of 100% at 30°C has been recorded.

B. All Materials and Electrical Equipment shall be suitable to operate satisfactory for continuous periods in the condition
stated above and under following climatic conditions:-

(i) maximum sun radiation temperature in summer - 84 °C

(ii) maximum ambient temperature in summer - 52 °C
(iii) average max. ambient temperature in summer - 45 °C
(iv) minimum ambient temperature in winter - 0 °C
(v) the altitude of Qatar may be taken as sea level.

1.7 KAHRAMAA REQUIREMENTS

A. The Contractor shall attend to and afford all facilities to the KAHRAMAA and shall provide all necessary work to
facilitate all main feeder work.

B. The Contractor shall be responsible for foreseeing any requirement as requested by the above mentioned authorities,
and shall follow the Engineer's instructions on Site.

C. The Contractor shall be responsible for preparing any workshop drawings concerning transformer rooms, electrical
(meter) rooms, feed-in routings, and shall consult the electrical authorities in accordance with the Engineer's
instructions, to seek the approval of these authorities.

D. The Contractor shall also be responsible for follow up of the application for electrical connection. The application form
shall be filled in by the Contractor who shall follow up with the concerned authorities for final electrical connection to
the project.

1.8 ELECTRICAL SERVICE

A. Materials and equipment shall be suitable in all respects for operation on electrical systems under following climatic
conditions: -
1. The electrical power system will operate on 415/240volt ± 6% Volt, 3-phase, 4-wire, 50 Hz system.
2. The low current systems shall operate on the voltages specified or as recommended by the respective system
manufacturer and the acceptance of the Engineer.

1.9 BUILDER’S WORK

A. The expression ‘Builder’s Work’ shall mean the ancillary work carried out by the Contractor in connection with the
Electro mechanical installation. The Contractor shall submit builders work drawings for approval of Engineer giving
complete information in accordance with the contract program.

B. Details of all foundations for apparatus, construction of ducts, sumps, draw pits, manholes, chases, structural steel
works, cutting away and making good in walls, floors, ceilings, etc., not detailed on tender drawings shall be
responsibility of contractor.

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C. The priming and painting of ferrous, non-ferrous and timber surfaces whether concealed or exposed.

D. The contractor shall entirely responsible for accuracy of information given for the builders’ work and in accordance
with contract program.

1.10 SHOP DRAWINGS, SAMPLES AND OTHER SUBMITTALS

A. The contractor shall submit the sample material, warrantee certificates, shop drawings, manufacturer’s Installation
Instructions, certificate of origin, Product credentials, Tests and Certificates, Field Test Reports.

B. The Contractor shall, upon the request of the Engineer provide plain paper copies of the standards' extracts to which
references are made in the specifications.

C. Two copies of the brochures submitted shall be originals as published by the Manufacturer. Other copies may be clear
plain copies of paper.

D. Submitted brochures shall include at least two copies of Manufacturer's original publications, other copies may be clear
plain copies of paper.

1.11 AS BUILT OR RECORD DRAWINGS SUBMITTALS

A. The contactor shall include Record (As-Built) Drawings with complete wiring diagrams, including complete terminal
strip layout and identification, and wire termination and tagging for all conductors.

PART 2 - PRODUCTS

2.1 MATERIAL

A. All electrical materials and equipment to be used for the project shall be new and shall be manufactured by one of the
manufacturer listed in acceptable manufacturers’ list in relevant section.

B. Materials proposed to be used shall fulfill the requirement like Local availability of spare parts and Local technical
support with factory trained technicians.

2.2 NAMEPLATES

A. Nameplates in Arabic and English shall be installed on all devices or pieces of equipment for which the use or
identification may not be readily apparent, such as, but not limited to, starters, relays, contactors, controls,
pushbuttons, indicating lights, switches.

B. Nameplates shall be made of laminated sheet plastic, 3 mm thick, or of anodized aluminum, approximately 1.5 mm
thick, engraved to provide black letters on a white background, and fastened in place with corrosion-resistant
screws, or as specified by local authorities. Name plates for IP55 panels shall be fixed with adhesives.

C. Nameplates shall also be provided on all manufactured assemblies to identify the assembly as well as feeders, circuits,
compartments, switches, internal components, etc.

D. Nameplates shall be located in a position to be easily readable after completion of the installation of the equipment.

PART 3 - EXECUTION

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INSTALLATION

3.1 GENERAL REQUIREMENTS

A. The Contractor shall supply all necessary labor and material, and shall install, complete and make ready for use, the
above mentioned systems including the installation and wiring of miscellaneous equipment and devices, as indicated on
the drawings and as herein specified.

B. The Contractor shall carry out the whole of the Electrical works in a workman like and substantial manner and in strict
conformance with the codes, Standards and requirements listed in the following clauses, or approved equal.

C. All equipment and material supplied for this project shall be manufactured in strict compliance with the standards listed
in the following clauses or acceptable equal.

D. If actual ratings of equipment supplied under other sections are different than the values indicated on the Drawings, the
Contractor shall implement all necessary modifications at no extra cost, to the acceptable of the Engineer and as
approved relevant Local Authorities.

3.2 ENGINEER'S DRAWINGS

A. The Engineer's Drawings issued with these Specifications are complementary to these Specifications.

B. These Drawings indicate the approximate location of all-electrical devices and equipment. The exact and final location
shall be subject to the prior acceptance of the Engineer on Site.

C. The Contractor shall check Architectural, Structural, Air-Conditioning, Plumbing and any other available Drawings to
avert any possible installation conflicts. Should drastic changes from original plans be necessary to resolve such
conflicts, the Contractor shall secure the Engineer's written permission on necessary adjustments before any installation
work is started.

D. All accessories and appurtenances that the Engineer deems functionally necessary for a complete installation shall be
supplied and installed by the Contractor whether or not explicitly indicated or described, at no extra charge.

E. Discrepancies shown on different Drawings or between Drawings and actual Site conditions, or between Drawings and
Specifications shall be brought to the attention of the Engineer for a decision.

3.3 TESTING AND COMMISSIONING

A. The Contractor shall test and commission the works to the approval of the Engineer.

B. The Electrical works shall be tested and commissioned in accordance with the Chartered Institution of Building
Services commissioning codes.

C. The Contractor shall include for the provision of all chemicals and other consumables required for testing,
commissioning and setting to work of each section of the Works.

D. The Contractor shall prepare a list of these consumables giving quantities necessary for each section of the works and
the recommended suppliers.

E. The Contractor shall use an approved independent specialist commissioning engineer for the capital plant and
equipment, under no circumstances the Contractor shall use his own staff for such things.

F. The Contractor shall submit to the Engineer for approval his “close down” program for the works; the program shall
address the following:
1. Start of testing and commissioning date.
2. Completion of testing and commissioning date
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3. Date and duration for each plant’s testing and commissioning.
4. Power and Water on date
5. Telephone Service on date

G. The Contractor shall submit to the Engineer for approval, a detailed method statement for each testing and
commissioning activity before one month of starting T & C along with T & C check list.

H. The contractor shall test the following in general

1. Insulation megger tests on wires & cables
2. Continuity and resistance tests
3. Socket outlets proper wiring tests
4. Operational tests on all electrical equipment
5. Insulation resistance tests of motors, distribution boards and panels
6. Testing of lighting installations
7. Earth loop impedance test for socket outlets
8. Earth resistance measurements test for MV/LV

I. The Engineer shall be notified seven calendar days or more in advance when any test is to take place, and it shall not be
started without his permission.

J. The Contractor shall ensure that he gives the Engineer at least two (2) working days written notice of any tests
requiring witnessing.

K. The Contractor shall maintain written records of all tests. Successful test records shall be counter signed by the
Engineer and bound into the Operation and Maintenance Manual.

3.4 OPERATION AND MAINTENANCE MANUALS

A. The Contractor shall provide detailed operation and maintenance draft manual to the Engineer for approval at least two
(2) weeks before the Practical Completion of the project.

B. The Testing and Commissioning results may be subsequently added to the draft manual and shall be retained on site
until the final manuals are approved by the Engineer.

C. The final manuals shall be bound into A4 size plastic ring binders with front covers providing the following
information:
1. Project Title
2. Volume identification
3. Contractors name and address
4. Engineers name and address
5. Completion date
6. Table of contents
7. Contractor’s emergency contact telephone and fax numbers.
8. Record drawing list
9. Detailed description of each system
10. Start up instructions for each system.
11. Shut down instructions for each system.
12. Detailed routine maintenance instructions for each system
13. Blank maintenance log sheets
14. List of suppliers and local agent addresses
15. Schedules of equipment
16. Manufacturer’s operation and maintenance manuals

17. Schedules of manufacturers recommended spares and tools.

18. Testing and commissioning results.
19. Training manual.

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3.5 MODIFICATIONS AND CLEANING

A. If during the work, the Contractor wishes to make changes or modifications, then these modifications shall be
submitted to the Engineer for approval. If these changes result in extra expenses in design and/or material these
expenses shall be borne by the Contractor.

B. The Contractor shall be responsible for all cleaning of Services, accessories and equipment, which have been supplied
and/or installed as part of the contract to which these general requirements apply. Cleaning shall be undertaken
immediately prior to handover.

3.6 PROTECTION OF ELECTRICAL EQUIPMENT

A. Electrical equipment shall be protected against mechanical damage and from the weather especially from water
dripping or splashing upon it, at all times during shipment, storage, and construction.

B. Equipment shall not be stored outdoors. Where equipment is installed or stored in moist areas, such as unheated
buildings, open spaces, etc., it shall be provided with an acceptable means to prevent the moisture damage. This may be
uniformly distributed source of heat to prevent condensation.

C. Should any equipment or material be subjected to possible damage by water, it shall be dried out thoroughly and put
through a special dielectric test as directed by engineer, at the expense of the Contractor or shall be replaced by the
Contractor without any additional charge.

D. Should any equipment or material be subjected to possible mechanical damage, the Contractor shall repair or replace
the damaged equipment as instructed by the Engineer.

PART 4 - APPROVED PRODUCTS

4.1 Approved Manufacturers

A. The contractor may allow in his tender for alternative manufacturers to those in Clause G below “the Vendor List”.
However all alternative equipment shall have sales, service and spares back-up locally through local supplier within the
Qatar.

B. Where alternative equipment is offered the Contractor shall substantiate, to the satisfaction of the Engineer, that the
alternative is equivalent or superior in all respects to the specified items. The Engineer reserves the right to instruct the
Contractor to submit the stringent one for approval of specified manufacturers or alternate subject to satisfaction.

C. All similar equipment shall be from one manufacturer as far as possible and standardization of components shall be
utilized to reduce the quantity of spare parts to be held.

D. The contractor shall ensure that the equipment offered can be installed in the spaces provided, with due regard to ease
of maintenance and replacement. The contractor shall also ensure that delivery is suitable for the building program
through specified supplier. Any material or accessories installed at site without written approval by Engineer shall be
replaced with approved one without any additional cost.

E. Where a country of origin is given, this refers to the Head Office in the case of International Corporations. However,
for each product not manufactured in that Country separate approval must be obtained from the Consultant.

F. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers included in
section 260100 “SCHEDULE FOR APPROVED SUPPLIERS OF EQUIPMENT”

END OF SECTION 260000

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TRANSFER SWITCHES

SECTION 263600

TRANSFER SWITCHES

PART 1 - GENERAL

1.1 GENERAL INSTRUCTIONS

A. Works under this section shall be governed by conditions of contract and other relevant applicable sections.

B. This specification to be read in conjunction with QCS 2014 and in case of conflict between contract documents, and the
standards and codes compliance shall be the more stringent amongst the above.

1.2 SCOPE OF WORKS

A. Work includes providing all materials, equipment, accessories, services and tests necessary to complete and make ready
for system operation in accordance with Drawings and Specifications.

B. The automatic load transfer equipment shall be designed to comply with the following criteria:

1. Monitor voltage of normal power supply.

2. Initiate cranking of the generator on failure of normal power.
3. Transfer load from normal supply to generator when it reaches its rated speed, voltage and frequency.
4. Re-transfer load from generator to normal power supply when normal power is restored.
5. Shut down generator unit.
6. Co-ordinate with generator supplier to ensure compatibility for control operation

C. The system shall include conduits, fittings (couplings, bends, boxes, cover plates, reducers, adaptors, etc.) and all
necessary parts to install a complete conduit system.

1.3 APPLICABLE CODE AND STANDARDS

A. UL 1008 - Standard for Automatic Transfer Switches.

B. NFPA-70, NFPA-110 - National Electrical Code incl. use in emergency & standby systems.

C. IEEE 446, IEEE 241 - Emergency & Standby power systems.

D. NEMA ICS-2-447 - AC Automatic Transfer Switches.

1.4 MATERIALS AND DRAWINGS SUBMITTALS

A. Contractor shall submit manufacturer's data and installation instructions for system.

B. Contractor shall submit dimensional layout on architectural background drawings complete with sections, views,
control and power wiring diagram.

1.5 QUALITY ASSURANCE AND CONTROL

A. The Contractor shall supply high quality materials, fully type tested and certified by the relevant International Testing
Authorities.
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B. Conduits and fittings shall be distinctively marked as manufactured for electrical purposes.

C. Manufacturer Firm shall be regularly engaged in the manufacture of system of types, and capacities required, whose
products have been in satisfactory use in similar service for not less than 10 years.

1.6 GUARANTEE AND WARRANTY

A. Contractor shall submit the Guarantee certificate for the equipment furnished under these specifications against
defective parts and workmanship

B. The guarantee shall be under terms of the manufacturer's and dealer's standard warranties for a period of not less than
two years from date of completion certificate and include labor and travel time for necessary repairs at the job site.

PART 2 - PRODUCTS

2.1 EQUIPMENT

A. The automatic transfer switches shall be 415V, three phase, and neutral 4 pole contactor type in double throw
arrangement with microprocessor controls in accordance with QGEWC regulations.

B. The switches shall be transfer-bypass type, with draw out transfer mechanism and controls. Bypass switches shall
permit maintenance of the transfer switching and controls without interruption of service.

C. The enclosures shall be (IP55), finished in light grey enamel. The front panel shall be hinged for access for inspection
and maintenance. All sections shall be 2 mm zinc coated with corrosion resistant treatment.

D. The switches shall be double throw, mechanically and electrically interlocked, and mechanically held in both positions.

E. Failure of any electrical component or disarrangement of any part shall not permit the switch to remain in a neutral
position.

F. The operating mechanism shall obtain its power from the source to which the load is being transferred.

G. An auxiliary contact shall close, starting the engine - alternator set, when the voltage in any phase falls to 75% of rated
for an adjustable period of 0.5-6 seconds, factory set a 2 seconds. When the alternator voltage has risen to 90% of rated
on all phases, the switch shall transfer from the normal to the emergency source.

H. The switch shall retransfer to the normal source when all phases have remained above 90% of rated, for an adjustable
time period of 0 to 30 minutes.

I. The switch shall be equipped with a timer to keep the engine running for an adjustable period of 0 to 5 minutes after the
load has been retransferred to the normal source.

J. The switch shall be equipped with an in-phase monitor or equivalent arrangement for retransferring to the normal
source.

K. One 4-position off-auto-run-test control switch shall be provided on the front of the enclosure. The run position shall
start the engine without operating the transfer switch. The test position shall simulate a power failure and shall transfer
the load to the emergency source.

L. The switch shall transfer when the voltage in any phase falls to 70% of rated, and shall retransfer when all phases have
remained above 90% of rated, for an adjustable time period of 0 to 10 minutes.

M. The switch shall be equipped with a timer to delay transfer for an adjustable period of 0 to 30 seconds, to prevent
transferring during testing of the standby power system.
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N. One 3-position off-auto-test switch shall be provided on the front of the enclosure.

O. All control gear shall be calibrated for operating conditions in a 50°C ambient temperature.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Locate, install and connect transfer equipment.

B. Check relays and solid state monitors and adjust as required.

C. Install and connect battery and remote alarms.

3.2 Manufacturers:

Refer to list of Approved manufacture.

END OF SECTION 263600

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