ELECTRICAL

Rotana Hotel.Suites.Resorts

Table of Contents

A. GENERAL GUIDELINES .......................................................................................... 03

B. ELECTRICAL SYSTEM ............................................................................................ 03

C. LIGHTING................................................................................................................. 05

D. POWER .................................................................................................................... 06

E. EMERGENCY POWER ............................................................................................ 07

F. FIRE ALARM SYSTEM............................................................................................. 09

G. MISCELLANEOUS ELECTRICAL ............................................................................ 11

H. UNINTERRUPTIBLE POWER SUPPLY FOR COMPUTER SYSTEM ..................... 15

I. COMPUTER OUTLET WIRING ............................................................................... 15

J. COMPUTER OUTLET WIRING ............................................................................... 16

K. SWIMMING POOL ELECTRICAL INSTALLATION ................................................. 16

L. DIMMING SYSTEM................................................................................................... 17

M. LIGHTING PROTECTION........................................................................................ 19

N. AIRCRAFT OBSTRUCTION LIGHT ......................................................................... 19

O. CLOCK SYSTEM ..................................................................................................... 19

P. HOLD UP AND BURGLAR ALARMS ....................................................................... 20

Q. TELEVISION SECURITY SURVEILANCE ............................................................... 21

R. WALL BOX DIMMER................................................................................................ 21

S. MOUNTING HEIGHTS ............................................................................................. 21

T. IDENTIFICATION NAMEPLATES............................................................................. 22

U. SHOP DRAWINGS & RECORD DRAWINGS .......................................................... 23

V. OPERATING & MAINTENANCE INSTRUCTION ..................................................... 24

W. TESTS ..................................................................................................................... 24

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A. GENERAL GUIDELINES

• Information contained in this section is intended to set minimum Rotana Standard

and it is not to provide complete design solutions to project specific situations.

• Design of the project shall comply with the local governing laws, codes,
regulations or the following Rotana Design Standards..

• Conflicts with these standards shall be referred to Rotana for resolutio.

B. ELECTRICAL SYSTEM

Design Considerations

• General: Provide an energy efficient electrical system which requires a minimum

level maintenance, maximum level of safety and is within budgeted costs.

• Reference: The electrical system design shall comply with the most current issue
of local applicable codes, including but not limited to NEC, NFPA 72 and NFPA
101, whichever is more stringent or British standard 16th Edition.

• Environment: System design and equipment selection shall take into

consideration, a hotel operating environment which requires quick and easy
maintenance with little to no available down time and a high degree of reliability.

• Equipment: Locate to provide minimum impact to the architecture and interior

finishes of the building.

Incoming Service

• Type: Electrical service shall be underground from a utility company transformer

at 480/277 V, terminating in a main service switchboard located in the main
electrical room.

• Sizing: Service capacity and main switchboard shall be computed in compliance

with local standards with 20% spare capacity.

Distribution

• Wiring General

- All wiring within the building shall be copper

- Wiring distribution shall be four wire color coded grounded system. Non –
continuous grounded systems, i.e. cable trays, shall have separate ground
with <25 ohms to ground.

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Power Distribution

• The preferred power distribution throughout the building shall be 480/277V to sub
distribution panels for lighting, receptacles, appliances circuits and mechanical
equipment.

• Tower distribution riser shall be vertical to sub distribution panels located every
floor.

• Branch circuits shall run horizontally.

Switchboards and Panels

• Main switchboard shall have breakers with a single main disconnect switch and
GFI protection.

• Sub distribution panel boards shall be circuit breaker type.

• Separate panels for light and power.

• Panel boards shall be located where possible to be within 30.5 m (100’) of its
loads.

• All panel boards shall be in secured rooms out of sight of the public view, on the
same floor as the load it serves.

Feeders

• Feeders shall be copper cable in cable trays and in conduit where in concrete
slabs and masonry walls.

• Feeders shall be sized per local standards with the exception of the elevator
feeders which shall be sized to carry full load without the use of demand factors.

Branch Circuits

• Branch circuit conductors shall be copper.

• Branch circuit loads shall be calculated with a maximum loading of conductors to

be 75% of the connected or calculated load, whichever is greater.

• Typical guestrooms shall be served with a 20A, 220V circuit fed from a panel
board on the same floor as the guestroom.

• Suites and special rooms shall be circuited as required.

• Circuiting form panel boards shall generally be horizontal.

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• Circuits for service appliances and mechanical equipment with loads over 900 W,
shall be individual circuits.

Receptacles

• Public Spaces: maximum of five per 20 A, 220V circuit, located at lamp locations
and for cleaning at 8m (25 ft.) radius.

• Ballroom/Meeting rooms: maximum of two per 20 amp, 220V circuit, located for
convenience every 8m (25ft) along wall with one on each side of a door.
Additionally, provide one 100 amp, 3 phase circuit to each ballroom section.

• Guest corridors: maximum of three per 20 amp, 220V circuit, located every 15
m (50 ft) along corridor walls.

• Administration areas: maximum of five per 20 amp, 220V circuit, located at desks
and work areas for electronic equipment, convenience and lamps.

• Mechanical areas: maximum of five per 20 amp, 220V circuit, located within 8 m
(25 ft) of all mechanical equipment in mechanical rooms and on roofs.

• Exterior of building: maximum of five per 20 amp, 220V circuit residual current
circuit protected, located around building for landscape trimming, generally in
vicinity of exit doors at porte cochere and major landscape areas.

Shielded Cable

All cable used for property management system, point of sale system and
audio/video system shall be fully shielded.

C. LIGHTING

Design Considerations

• Service and Access

- Lighting fixtures shall be located to enable reasonable access for service and
re lamping

- Ground mounted exterior fixtures shall be located to enable reasonable

access for service and re lamping.

• Types

- Suite and special room lighting shall be as reviewed by Rotana.

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- Public space lighting in the restaurant areas is generally halogen and

incandescent lighting.
- Ballroom shall have dimmable incandescent, non – dimmable fluorescent,
adjustable track and decorative lighting.
- In guest corridors, prefunction, stairwell and public toilets, lighting is generally
fluorescent with some incandescent.
- Back of house lighting is designed by the electrical engineer and is generally
fluorenscent.

• Circuiting

Wall washers, down lights, emergency exit, and decorative fixtures shall be on
separate circuits. No decorative fixtures shall be wired to emergency circuits.

• Lighting Levels

Design lighting systems to provide minimum foot candle (FC) levels in

compliance with table – lighting requirements at the end of this document.

• Lighting Controls

Switching

- All guestrooms shall be locally switched.

- Guestroom corridors: continuously on panel board switch. Day time and night
time mode.
- Back of house – switched daily, local switch.
- Public area – dimmer controlled, dimmer switch.
- Public area – continuously on, panel board switch.
- Public area – switched daily, local switch.
- Exterior site and parking lot – photocell/timeclock.

Dimming

- Ballroom: four scene (minimum), preset, remote controlled with black out
capability with emergency lighting transferred from off to on through the
dimmer equipment.
- Restaurants: four scene (minimum), preset, locally controlled.
- Lobby: four scene (minimum), preset. Locally controlled.
- Swimming pool: slide type wall dimmer boxes
- Meeting rooms: slide type wall dimmer boxes with black out capability with
emergency lighting transferred from off to on through local contractors.

D. POWER

Devices

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• Receptacles: Commercial grade rated for 20 amp, 220V in all areas.

• Switches: Commercial grade rated for 20 amp, 220V in all areas.

• GFI Outlets: Residual current circuit protectors shall be provided for all
receptacles as required by code including, but not limited to, guest bathrooms,
pool areas, employee shower areas and outlet for all portable appliances in
kitchen areas.

• Device Plates: Ivory or light finish for all devices including guestrooms except
stainless steel plates (with ground) shall be provided for kitchen outlets.

• Shunt – Trip: Provide shunt – trip to shut off all power to appliances under
exhaust hood in fire condition.

E. EMERGENCY POWER

Design Considerations

• General

- In geographical areas with power reliability issues, use prime generators to

supply essential power requirements.
- Prior to beginning design, obtain 2 year grid history showing number and
duration of all out ages.

• Type: Diesel engine driven generator with synchronization and automatic transfer
switches to activate generator upon loss of power.

• Rating: Rated to provide power for all code required and critical loads. Automatic
transfer switches shall be provided to activate the generator.

• Fuel Storage: Diesel fuel storage for the generator shall be provided for 72 hours
of running at full load.

Applicable Systems

Emergency power system shall be provided for the following systems:

• Emergency lighting

• Electric fire pump and jockey pump

• Fire Alarm System

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• Telephone System, Security system, PMS, POS, call accounting, Fidelio and
UPS system.

• Kitchen walk – in freezers and refrigerators.

• Building automation system and air compressor.

• Sewage ejectors and sump pumps.

• Smoke control system (including panels) and stairwell pressurization fans.

• Minimum one service and one guest elevator serving all floors, transferable to
any elevator.

• Sewage plant, if any.

• Domestic water plant.

• Air conditioning (1) chiller (depending on power condition in Qatar)

Emergency Lighting

Emergency lighting shall be provided for code required egress, hotel operations and
security as follows:

• Exit signs

• Egress paths and stairwells

• Public stairs and steps

• Fire command room

• Telephone equipment room

• Mechanical, electrical and elevator rooms

• Public toilets

• Employees lockers and toilets

• Exercise room and sauna

• Engineering/maintenance office

• Administrative offices

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• PABX room

• Security office

• Parking garage

• Exterior exit doors

• Pool lighting

Note: Battery emergency system shall be provided per local codes.

F. FIRE ALARM SYSTEM

Design Considerations

• Type: Stand alone, multiplex type to allow for the individual zoning required for
activation of the smoke control system and to allow for reprogramming as
required with printer in the Fire Command Center.

• Annunciation: Fully automatic and manual and provides complete annunciation of

smoke detectors (space and duct) sprinkler flow switches, tamper switches and
manual pull stations.

• Initiation: The system initiates alarm tones, performs elevator recall, releases
electronic hold open devices on doors and activates the smoke control system in
the alarmed zone.

• Communications: Two – way fire department communication is provided via

telephones and the fire control station.

• Remote Annunciator: A remote annunciator panel is provided in the PABX room

System Devices

a. Area Smoke Detectors:

• Type: Photo- electric

• Location: area smoke detectors shall be located in the following locations:

- Guest corridors spaced no more than 13 m (42’) apart

- All mechanical, electrical, telephone and elevator equipment rooms.
- All elevator lobbies for purposes of elevator recall.

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- Al all fire/smoke doors for purposes of releasing hold open devices in elevator
lobbies, ballroom and meeting room doors, any other doors designed to held
open into egress paths.
- All public areas at a maximum area or 84 m2 (900 ft2) per detector
- All back of house areas at a maximum of 84 m2 (900 ft2) per detector, only if
smoke control is required.

b. Guestroom Smoke Detectors:

• Smoke detector with audible sounder base fully addressable provided in all
guestrooms and suite.

c. Duct Smoke Detectors:

• Photo electric type provided in the return duct work of all HVAC units and
connected to the fire alarm system.

• Supply duct smoke detectors, provided downstream of all HVAC units over 0.9
m3/sec (2,000 cfm), shall shut down the unit upon sensing smoke. This detector
will annunciate at the fire alarm panel but will not activate the smoke control
system.

• Alarm and communication speakers:

- Alarm speakers with strobes, for purposes of sending automatic alarm tones
from the fire alarm panel, shall be recessed type in public areas and surface
mounted type in back of house areas.
- The tone is of such character that it can be clearly heard at 5 dBA above
ambient sound level but minimum 85 dBA.
- Alarm speakers with strobes shall be provided in all public and back of house
areas (including corridors, elevators, stairwells and enclosed garages)
- Alarm speakers shall be provided in all guestrooms.
- In accessible guestrooms provide with strobe connected to fire alarm sysytem

d. Fireman’s Telephones

• For purposes of two way communication between the fire command center and
the telephone jacks.

• Telephone jacks shall be located in elevators, elevator lobbies, interior entries

into exit stairwells, fire pump room, elevator penthouses, electrical switchgear
room, boiler room and engineers office.

• Manual pull stations shall be key re settable type located at the front desk only.

• Water flow and tamper switches: see sprinkler section.

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e. Annunciator Panels

• Annunciator panels shall be either digital or matrix type indicating floor or zone of
floor and type of device initiating the alarm or trouble.

• Devices requiring alarm annunciation include pull stations, are smoke detectors,
water flow switches, return duct smoke detectors, kitchen hood sprinkler
systems, heat detectors, sprinkler valve tamper switches (indicates trouble) and
supply duct smoke detectors (indicates trouble).

• Annunciator panels shall be located in the engineering BMS room and in the
PABX operator room.

G. MISCELLANEOUS ELECTRICAL

Lighting Protection

• Provide for total building protection and installed as required by local code.

• Comply with UL (Master Label), FM and local codes.

Aircraft Warning Lights

Comply with local airport authority.

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Lighting Table

Watts Min. Type Lighting

Item Location /SM Lux Remarks
(SF) (FC)
Main- Incand Fluor Décor Land
tained scape

Main 108 Photocell and time clock.

Entrance (10)
Four scene preset remote
Entrance 43 161 X X X dimmer with panel at front
Lobby (15) desk

Luggage 269 X Fluorescent

Room (25)
Incandescent in Women’s
Public powder room only.
Toilets 22 (2) 269 X X Fluorescent cove lighting at
1 (25) water closets & lavatories.

Coat 22 (2) 161 X Wall box dimmer

Rooms (15)
Applies to all areas
including walks, driveways,
Site 11 (1) parking, service areas,
steps and ramps. Photocell
and time clock.
Land Protected by GFI. Photocell
scaping 22 (2) and time clock.

Flag Poles 54 (5) Photocell and time clock.

215
Building (20) Photocell and time clock.
Exe.
2 Business
Centre
Low voltage and adjustable
3 Casual 65 (6) 215 accent lighting may be
Restaurant (20) X X used. Four scene preset
dimmer. Include control
panel at maitre’d stand.
269/ Recessed fixtures with
Fitness 22 (2) 538 X warm white lamps, shielded
Centre (25/50) form below.
Fluorescent only in pool
32 (3) 151/ equipment room. Pool
4 Pool 538 X X lamps min 500 W on GFI &
(15/50) emergency power.
Outdoor
Recreation
Indoor
Recreation

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Lighting Table contd…

Watts Min. Type Lighting

Item Location /SM Lux Remarks
(SF) (FC)
Main- Incand Fluor Décor
tained
Fluorescent task lighting at
cashier and wall display
areas. Track lights (75 W)
5 Retail 65-86 215 X X accent lighting on dimmers.
(6-8) (20) Cashier lighting on
emergency power.
Utilize decorative as main
Pre 32 (3) 161 X X source and incandescent as
function (15) supplemental.
Fixtures to be low
brightness with 45
shielding. Halogen and
metal halide may be
considered in ceilings over
6 m (20 ft). Each subdivide
equipped with fully
dimmable incandescent
65-68 269/ X X X system and a fluorescent
Ballroom (6 – 8) 430 system controlled by switch.
(25/40) Locate recessed dimmer
control station at public
entrance doors. Provide
individually controlled head
6 table track light. Decorative
chandeliers and sconces,
incandescent, fluorescent
and tack lighting all
individually controlled.
Halogen and metal halide
maybe considered in
ceilings over 4.25 m (14 ft).
Each subdivided equipped
with dimmable
incandescent system with
Meeting 65-86 269/ X X X remote dimmer allowing
Rooms (6–8 ) 430 combined dimming control
(25/40) of all rooms. Provide
remote dimmer jack in each
subdivide. Fluorescent
systems controlled by local
switch. Provide individually
controlled head table track
light. Decorative
chandeliers and sconces,
incandescent and flurescent
all individually controlled.

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Lighting Table contd…

Watts Min. Type

Item Location /SM Lux Lighting Remarks
(SF) (FC)
Main- Incand Fluor Décor
tained

Banquet 21-32 161 X Recessed fixtures locally

Storage (2-3) (15) switched.

Guest 22 (2) 108 X Lighting provided by table

Rooms (10) lamps.

Guest 323 X X Low voltage over vanity &

Room Bath (30) bath

Guest 108 X X Indirect fluorescent and wall

Corridors (10) sconces

Elevator 108 X X Decorative incandescent,

Lobbies (10) fluorescent & wall sconces.
Service
7 Elevator 108 X Single 32 W, 1.5 m (4’)
Lobbies (10) vandal proof tube.

Vending 108 X Consistent with corridors &

(10) elevator lobbies.
269/
Guest 11 (1) 538 X Recessed fluorescent
Laundry (25/50)
House-
keeping 22 (2) 377 X Recessed fluorescent
and LInen (35) locally switched.

Exit Stairs X Single 32 W, 1.4 m (4’)

vandal proof tube.

Executive 22 (2) 161 X X Fluorescent only in pantry.

Lounge (15) Lighting provided by table
lamps.

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H. UNINTERRUPTIBLE POWER SUPPLY FOR COMPUTER SYSTEM

The UPS shall be capable of being operated in any of the following modes:

• Normal mode

During normal operation, the UPS shall be used to provide precise regulated and
transient – free power to the critical load. The primary a.c. sourch shall be used
to supply power to the rectifier and battery charger separately via an isolation
transformer. The rectifier shall provide regulated d.c. power to support the
inverter while the separate battery charges is maintaining the battery plant in fully
charged condition. The inverter shall convert the d.c. power into regulated a.c.
power for the load.

• Emergency Mode

Upon failure of the normal a.c. power input, input power for the inverter shall
automatically be supplied from the battery plant for 15 minutes. When the a.c.
power is restored, input power to the inverter shall automatically be supplied form
the rectifier while the battery plant is being recharged by the battery charger. If
the input power does not return, the UPS shall automatically shut itself down
while sounding an audible alarm, when the lower limit of the battery plant is
reached.

• Bypass Mode

If UPS failure occurs, a static switch shall transfer the load to the a.c. main power
within ¼ cycle. Retransfer of the load to the output of the UPS shall be manually
accomplished. For maintenance furnish and install make before break manually
initiated maintenance bypass switches to bypass and isolate the UPS system
without interruption of the load.

The UPS shall have built in protection against under voltage and over current,
including voltage and current surges on the output caused by load transfer.

I. COMPUTER OUTLET WIRING

• Provide, adjacent to each computer system outlet and point of sale outlet, a
duplex receptacle which shall be on a dedicated and isolated ground circuit. As
many as four receptacles can be grouped together on a single branch circuit and
wired to the nearest emergency utility panel.

• A utility panel serving computer outlets shall be provided with a separate isolated
ground bus. Provide separate ground wire in conduit form panel isolated ground
bus to ground bus located in switchboard room.

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• In addition provide, adjacent to each point of sale and computer outlet, a junction
box and conduit extended to computer room for communication cable.

• All computer cables to be supplied and installed by electrical contractor,

termination by a computer manufacturer. Cable information shall be furnished by
Rotana for each particular installation.

J. TENNIS AND SQUASH COURT LIGHTING

• Tennis Court

Tennis court lighting for club play shall consist of twenty two 8 foot 0 inch long
four lamp continuous fluorescent lights, eleven on each side of the court. Lights
to be mounted 16 feet 6 inches above the court and tilted at a 45 degree angle.
The lights shall be suspended from four posts on each side. Each post shall
have an 11 foot 0 inch davit arm. Post shall be constructed of aluminum, light in
weight, capable of withstanding 100 miles per hour wind.

Fixture housing shall be 1/8 inch thick extruded aluminum for structural support
and cool ballast operation. Door assembly shall be of heavy gauge extruded
aluminum frame with prismatic high impact lens. Reflector assembly shall be
made of prefinished aluminum, finished in white baked enamel.

• Squash Court

Squash court shall consist of a sufficient quantity of fluorescent luminaires to

provide an average illumination level of 30 foot candles (300 lux). The lamps
shall be protected by an impact resistant lens.

K. SWIMMING POOL ELECTRICAL INSTALLATION

• Distribution panel serving pool shall have an isolated ground bus connected to
switch gear ground bus not connected to pool neutral.

• Pool lights shall be 300 watts, 12 volts wet niche type with an individual shielding
isolating transformer provided for each light. Transformers should be located as
close as possible to lights to minimize the voltage drop.

• No electric outlets of over 24 volts shall be located within 3 meters (10 ft. 0 in) of
the pool perimeter unless such outlets are protected with earth leakage circuit
breakers.

• Any metal part of fixture or conduits in contact with pool water shall be brass or
any other approved non-corrosion – resistant material.

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• Unbroken copper ground wire shall be provided from the panel serving the pool
bonded to all metallic conduits, piping, steel, etc., in pool.

• Pool motors and controllers shall be connected to a circuit protected by a ground

fault circuit interrupter.

L. DIMMING SYSTEM

• General

The lighting of all bars, restaurants, ballroom, lobby and other areas required to
be dimmed shall be controlled by a preset SCR type dimming system silicon
controlled rectifier type, employing two rectifiers in a “back to back” electrical
configuration to provide, at all times, symmetrical alternating current output to the
lamp loads controlled. Dimmer assemblies shall be factory assembled and
wired, and shall contain the proper number and capacity of silicon controlled
rectifiers mounted in heat sinks, and printed circuit type control cards containing
dimmer bias and curve adjustment controls, as well as firing and protective
circuitry (one per dimmer). An individual fully magnetic primary circuit breaker for
each dimming channel type, and a “control power” circuit breaker shall be
provided.

• Power Output

Each dimming unit shall carry its full rated load indefinitely. The kw dimmer
rating shall refer to tungsten filament lamp loads only. Lighting loads from full
rated load to 10 watts load shall be controlled in a stepless output in a range from
zero to full voltage.

• Dimming Curve

The standard dimming curve shall be square law so that changes of specified
magnitude on the controller shall produce an apparent corresponding change in
light output. The dimmer shall always be shut off at the “Off” position of the
potentiometer regardless of the “zero” setting so that, when the control voltage is
off, the output square law curve shall be 12.5 volts.

• Output Wave Form

Regardless of load, the load current and voltage from a dimmer unit shall be an
alternating output completely symmetrical with respect to the zero voltage and
current axis. There shall be no direct current introduced in the line.

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• Interference and Filtering

Since the output of silicon controlled rectifiers, if unfiltered, will cause fibrillation
of commonly used incandescent filaments, as well as electrical/electromagnetic
interferences in even properly installed systems, the dimmer shall incorporate
suitable filtering to make the use of such rectifiers compatible with such filament
and systems.

• Control and Power Isolation

Electrical isolation between the control and power circuits shall be complete.
Insulation breakdown between these circuits shall be tested at 1500 volts rms.
No phase relationship between line and control is required nor any common
reference voltage. Control negative and dimmer neutral shall, therefore, be
independent.

• Fader Sensitivity (DIP)

The output voltage curve shall not deviate from a straight line.

• Dimmer Board

Dimmer board shall have all necessary dimmers, nondim circuits, relays,
contractors, contactors for emergency circuits, load circuit breakers and the
preset panel.

• Preset Panel

Preset panel shall consist of groups of four rows of linear slide potentiometers
with a graduated scale (1-10), each group shall be labelled as to the room or
area controlled. Adjacent to each row of potentiometers shall be a rear –
illuminated when activated momentary contact button. Above preset no. 1 shall
be a rear illuminated when activated momentary contact button which, when,
pressed, shall cause all lights to fade out. Fade rate shall be fully adjustable
from 5 seconds to 60 minutes and shall use such devices as ramp generators.

• Remote Control Stations

Remote stations shall have six rear illuminated when activated momentary
contact buttons labelled “ON, OFF, 1, 2, 3, 4”, which are parallel to the button
controls as the preset panel.

• Special Control Devices

Provide limit switches in sliding partition tracks for control of parallel dimming
circuits in adjacent room. Where deemed appropriate, provide a local “take
control” preset panel.

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M. LIGHTING PROTECTION

The system shall consist of copper points mounted on cast copper bronze bases
around the periphery of the roof. The points shall be interconnected by means of
copper conductor cable so as to form a closed loop. Form the closed loop, down
conductors shall be coursed down from each level. These conductors shall be
bonded together where they enter and leave the core area. From the base of the
core area, the conductors shall be run to the periphery of the main structure and
coursed down the exterior columns behind the façade and terminate in ground rods
outside the foundation walls. One of the grounds shall be interconnected to the
switchboard room ground bus.

In dry soil areas, a counterpoise conductor connecting all ground rods is

recommended.

The British Preventor System of lighting protection is acceptable if approved by local

authorities.

N. AIRCRAFT OBSTRUCTION LIGHT

The system shall consist of two lights mounted at the highest point on the roof,
arranged in twin lamp combination, complete with mounting post and water proof
distribution box. The warning lights shall be controlled by a time switch to put the
lamps on one by one automatically. The system shall have current relay mounted
adjacent to the lamps to indicate current flow when lamps are on and sound on
alarm if there is no current flow when switch is in the “On” position. When an alarm
occurs, the systems should be capable of switching over by means of auxiliary
relays from one lamp to another.

Requirements for above system should be checked with local authorities.

0. CLOCK SYSTEM

The clock and time stamp system should consist of a completely supervised impulse
clock system, with the master controller equipped to supervise and synchronize all
clocks and time stamps by impulses at least once each minute.

• Master Clock

Chief Engineer’s Office

• Time Card Recorder

Staff Entrance

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• Clocks

- Reception Desk
- Reservation Office
- Main Kitchen
- Banquet Pantry
- Food Preparation Room
- Staff Dining
- Staff Locker
- Employees Dining
- Staff Training
- Male Employees Lockers
- Female Employees Locker
- Laundry
- Housekeeping
- Beauty Shop
- Barber Shop
- Health Club
- Administration area
- Accounting Office
- Telephone Switchboard
- Pool area
- Secretarial
- Reception
- Purchasing Office
- Maintenance Shops

P. HOLD UP AND BURGLAR ALARMS

Hold up alarm system should consist of alarm switches connected to audible and
visual annunciators in the Security office, the Telephone switchboard room and the
Resident Managers Office, as well as to the nearest police station and /or a security
organization providing 24 hour a day surveillance service provide foot operated
switch for each front office cashier the pay master and hand operated switches
under desktops of General Cashier, Chief Accountant and Payroll Office.

Burglar alarm system should consist of alarm switches connected to audible and
visual annunciators in the Security office, the Telephone Switchboard room and the
Resident Managers Office and a visual annunciator only at the Front Desk
Concierge station.

Burglar alarm switch locations shall be provided at all emergency exit doors or exit
door from the Hotel service area which are not under immediate and constant
supervision of Hotel supervisory personnel.

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Q. TELEVISION SECURITY SURVEILLANCE

A closed circuit television system should be provided to monitor the activity in certain
areas, locations to be determined in consultation with Rotana Operations and
Technical Services. Generally, 30 cm. Monitor screens and selector controls will be
located in the area where these monitors will have maximum use and including
location in the Front desk, with cameras located as required to observe the following
locations:

• Front desk entire length

• Guest elevator lobby

• Employees entrance

• Service entrance loading dock

• Lobby including front entrance (ballroom entrance if separated)

• Garage and/or parking lots

Panning cameras with appropriate controls including zoom shall be provided as

required to suit conditions.

R. WALL BOX DIMMERS

Dimmer switches shall be linear slide type with positive off position. Dimmer shall be
capable of operating rated capacity without affecting design lifetime. Dimmers shall
be voltage regulated so that a +/- 10% variation in line voltage shall cause no more
than a +/- 5% variation in load voltage when dimmer is operating at 5% light output.
Dimmers shall be properly filtered so as not interfere with radio or audio visual
equipment. Dimmers shall be Lutron Nova H or T star.

S. MOUNTING HEIGHTS

Standard mounting heights to the center line of wiring devices, bracket lights, clocks
and other electric outlets above the finished floor shall be as follow:

• Convenience receptacles, telephones, radio microphone 230mm

& TV outlets

• Wall switches 1220mm

• Receptacles in service & work areas 1220mm

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 Rotana Hotel.Suites.Resorts

• Clock outlets 2290mm

• Decorative wall brackets 1830mm

• Volume Control 1370mm

• Manual dimmer knobs & remote dimmer controllers 1220mm

• Wall mounted telephones 1370mm

• Fire alarm pull station 1220mm

• Guestroom bathroom fluorescent lighting fixtures shall be

wall mounted between top or mirror and ceiling. Two
lamps shall be included.

T. IDENTIFICATION NAMEPLATES

Engraved phenolic nameplate, 6 mm size (1/4 in) with white lettering on black
background, clearly indicating the function, designation and equipment controlled
should be provided for the following:

• High tension switch gear

• Low tension switch gear

• Distribution boards

• Panel boards

• Motor starters

• Disconnect switches

• Time switches

• Remote alarm bells or annunciators

In each panel board, a typewritten directory should be provided on the inside of the
door indicating the service controlled by each circuit.

Provide and install in switchgear room a laminated drawing of the building electrical
riser diagram.

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 Rotana Hotel.Suites.Resorts

U. SHOP DRAWINGS AND RECORD DRAWINGS

Manufacturers drawings or catalogue sheets of the following apparatus, giving full

fitness and other pertinent facts, shall be submitted to the Architect and Consulting
Engineer, and their approval secured before apparatus in question is ordered, built
or installed.

• Main service switch assemblies

• Metal clad main distribution switchboards

• Panel boards

• Sub distribution boards

• Fuses

• Transformers

• Regulators

• Primary switch

• Lighting fixtures, lighting equipment and lamps

• UPS system

• Emergency generator equipment

• Fire alarm system

• Dimming equipment

• Lightning protection system

• Miscellaneous systems

Record drawings of the actual installation shall be prepared by the Electrical

Contractor at the conclusion of the job, based upon careful records kept by him,
during the progress of the work, of all deviations from the design shown on the
Contract drawings, and be submitted to the Architect and Electrical Engineer for
approval.

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 Rotana Hotel.Suites.Resorts

V. OPERATING AND MAINTENANCE INSTRUCTIONS

Three sets of operating and maintenance instructions manuals, covering completely

equipment starting sequences of emergency generator, transfer switches,
switchboards, transformers shall be furnished to the Hotel Chief Engineer. In
addition, a list of manufacturers with name of local representative should be
submitted in order to expedite ordering of replacement parts, or servicing of
malfunctioning systems and components.

W. TESTS

Before the electrical facilities are placed in operation, the Contractor shall make
suitable tests and submit record copies of tests to establish to the satisfaction of the
Electrical Engineer and Hotel Chief Engineer that all equipment, devices and wiring
have been correctly installed are in satisfactory working condition and will operate as
intended.

The Electrical Engineer and Hotel Chief Engineer reserve the right to witness all the
following tests and they shall be notified three working days before they are to take
place. They shall include:

• Feeders and Branch Wiring Insulation Resistance

• Switchboard

- All current transformers secondary circuits

- All potential transformers secondary circuits
- Circuit breakers
- Maintenance of proper phasing throughout electrical distribution system

Circuit breakers at the switchboard shall be tested as follows

- Each circuit breaker shall be drawn out its cubicle, closed manually and its
insulation resistance measured from phase to phase and from phase to
ground.
- All adjustable direct acting trip devices shall be set using values given in the
approved relay settings for the job.

• Circuit Breakers

Before switchgear is energized, the following tests shall be performed on each

circuit breaker in its “TEST” position:

- Close and trip circuit breaker from its control switch, push button or operating
handle. Switchgear bus may be energized to permit test operation of circuit
breakers with a closing.
- Trip each electrically operated circuit breaker with its mechanical trip device.

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 Rotana Hotel.Suites.Resorts

- Test operation of circuit breaker latch check switch, where provided.

• Motors

Before connecting power cables to motors, proper rotation and insulation

resistance of all motors windings shall be measured. Measurements shall be
recorded. Measurements shall be repeated after power cable terminations are
completed.

All motors where practical shall be run uncoupled for a minimum period of 4
hours before the driven equipment is placed in regular service.

• Grounding

The resistance to earth shall be measured at the following locations:

- At each electrical system ground or system neutral ground. Resistance shall

not exceed 5 ohms for systems operating 600 volts or less between
conductors.
- At each ground provided for structure lightning protection. Resistance shall
not exceed 5 ohms.
- At one point at each grounding system used to ground electrical equipment
enclosures. Resistance shall not exceed 5 ohms.
- At one point at each grounding system used to ground wiring system
enclosures such as metal conduits and cable sheaths or armor. Resistance
shall not exceed 5 ohms.
- The above measurements shall be made before connection is made between
the ground and the equipment to be grounded.

• Alarm

All electrical equipment alarm shall be tested for proper operation by causing
alarms to sound under simulated abnormal conditions.

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