WIRING DEVICES

PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to this
sections.
B. Requirements of the following Division 16 Sections apply to this section:
1. “ Basic Electrical Materials and Methods.”
1.02 SUMMARY:
A. This Section includes the following:
1. Outlet boxes and plates.
2. Lighting switches.
3. Socket outlets.
4. Lighting Contactors.
B. Related Sections: The following sections contain requirements that relate to
this section:
1. Division 16 Section “Circuit and Motor Disconnects” for devices other than
snap (lighting) switches and plug/receptacle sets used as disconnects for
motors.
2. Division 16 Section "Electrical Identification” for requirements and legends
to be engraved on wall plates.
3. Division 16 Sections “Telephone Systems” and “Master Antenna TV
Systems” for wiring devices required.
1.03 SUBMITTALS:

A. Product Data: submit manufacturer’s data on each electrical wiring device
specified for approval by the Engineer.
B. Submit Samples of those products indicated for sample submission in
Engineer’s comments on product data submittal. Include colour and finish
samples of device plates and other items per Engineer’s request.
C. Standards Compliance: Comply with requirements of applicable local codes,
IEC 60669-1 and IEC 60884-1 pertaining to wiring devices.
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1.04 QUALITY ASSURANCE:
A. Regulatory Requirements: Comply with provisions of the local regulations,
codes and standards applicable in the project/host country. Components shall
be standard approved manufacturers products, uniform and modular.
B. Standards Compliance: provide wiring devices, which are listed and comply
with applicable standards for the various applications indicated in the
specification.
C. Standards Compliance: Comply with requirements of applicable local codes,
IEC 60669-1 and IEC 60884-1 pertaining to wiring devices.
1.05 SEQUENCE AND SCHEDULING:
A. Schedule installation of finish plates after the surface upon which they are to
be installed has received final finish.
PART 2 – PRODUCTS:
2.01 MANUFACTURERS:
A. Manufacturers: subject to compliance with requirements, manufacturers,
specifications, design drawings and regulation.
B. For approved manufacturers refer to recommended manufactures list.
2.02 GENERAL
A. Each type of wiring devices where applicable shall be the same manufacture
and where necessary of the same maker's catalogue number or description to
provide consistent appearance and finish.
B. Flush mounting wiring devices shall be fitted into purpose made back boxes
only. All wiring devices shall be flush mounted except in electrical and
mechanical plant rooms.
C. All boxes or sections of boxes for use with wiring devices must incorporate a
suitably marked earth terminal. Accessory plates shall be secured to boxes by
not less than two fixing screws. Where these screws do not provide adequate
earth continuity to metal plates including parts to be earthed then a bonding
connection shall be provided from the earth terminal to the plate or part. The
bonding shall be protected with a green/yellow insulated sleeve. The above
requirement shall not apply to the earth socket on a socket outlet when directly
connected to a protective conductor.
D. Where more than one phase of a supply exists in a multi gang box the
following requirements shall apply:
- A clearly visible label showing the maximum voltage present shall be
arranged as a warning notice before access can be gained to live parts.
- Wiring and accessories connected to each phase shall be
separated from each other by fixed screens or barriers.
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2.03 ELECTRICAL OUTLET BOXES AND PLATES-GENERALLY:
A. Surface or Recessed Boxes: provide compatible type with conduit or cable
system and of shapes and sizes compatible with standards applicable to
switches, socket outlets and lighting fixtures approved.
B. Unused Openings: close with knock-out closers manufactured for the purpose.
C. Blank Plates: provide blank plates on outlet boxes installed in the tenant space
or on which no apparatus is installed or where apparatus installed does not
have suitable cover for box. Blank plates for wall outlets are to be attached by
a bridge with slots for horizontal and vertical adjustment.
D. Non metallic boxes are to be used for recessed outlets in ceiling or wall.
2.04 METALLIC OUT BOXES:
A. Manufacturers: obtain metallic outlet boxes from same manufacturer of
conduit system or equally approved compatible with wiring device specified,
and to the satisfaction of the Engineer.
B. Recessed and Concealed Boxes: galvanized pressed steel, with knock-outs for
easy field installation. Special boxes are to be punched as required on site.
C. Exposed Surface Mounted Boxes: .galvanized cast iron with threaded hubs.
D. Outdoor surface or Recessed Boxes: galvanized cast iron with threaded hubs
and neoprene gaskets to ensure water tightness and with stainless steel or non
ferrous, corrosion resistant screws.
2.05 MOULDED PLASTIC OUTLET BOXES:
A. Type: heavy gauge pressure moulded plastic, minimum 2 mm thick, self
extinguishing , with softening point not less than 85deg. C. Boxes are to have
provision for securely terminating conduits and are to be manufacturer’s
standard for required application.
B. Fittings: provide brass inset threads to receive cover screws and for mounting
devices or accessories, push-fit brass earth terminals, and steel insert clips to
provide additional support for pendants or for heat conduction. Provide
Neoprene gaskets for weatherproof installations.
2.06 PLATES AND CORD-OUTLETS:
A. Wall plates: single and combination, of types, sizes, and with ; ganging and
cutouts as indicated. Provide plates which mate and match with wiring devices
to which attached. Provide metal screws for securing plates to devices with
screw heads colored to match finish of plates. Provide wall plate . Provide wall
plates with engraved with engraved legend where indicated. Conform to
requirements of section “Electrical Identification” Provide plates possessing
the following additional construction features.
B. Cord Extension Plates: are to have threaded cord grip bushings of same
material and finish as plates.
C. Stainless Steel Plates: heavy gauge, pressed stainless steel, satin finish,
minimum 1mm thick, for use in service areas and corridors, stores, electrical
and mechanical rooms and the like, except where otherwise indicated.
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D. White Plates: heavy gauge, for indoor use in, control rooms, Operator rooms,
BMS, security rooms, public corridors, and the like, except where otherwise
indicated, for similar installations.
E. Cable/cord outlet is to be used for up to 45 A, 250 V rating for connection of
power/control cable of fixes appliances. Plate is to have threaded cord grip to
anchor cable securely to cover. Box is to include fixed terminal block and
cable clamp for termination of cable/cord within.
2.07 SWITCHES AND PUSH BUTTONS:
A. All switches for lighting circuits shall with IEC 60669-1 and shall be quick
make and break for use on a.c. supplies. Switches shall be single pole and rated
not less than 10A, 220 V for use only on a.c systems, including fluorescent or
inductive loads.
B. Switches shall be one-way or two-way or intermediate or push button as
indicated on the drawings.
C. Switches for lighting shall be of the plastic insulated cover plate switch type
with rocker operation, and in single or multi gang formation where installed in
groups.
D. In damp or outside positions, switches shall be IP54, single pole. The switch
enclosure shall be metallic weatherproof.
E. Push buttons single units or forming part of a multi gang unit shall be rated at
10A, 220V. The pushbutton switch shall be single/double-pole and arranged
for push to make/to break the contacts as applicable for the application.
F. All push buttons shall be illuminated type.
G. All lighting switches located inside the archive shall be self fire extinguishing.
2.08 LIGHTING SWITCHES:
A. General: quick-make, quick-break quiet type with silver alloy contacts in are
resisting moulded base, with toggle, rocker or push-button as specified, for
inductive or resistive loads up to full rates capacity, and arranged for side
and/or back connection.
B. Remote Lighting Control Panel (LCP) For Contactor Control: multiple 3-
position toggle switch assembly, with an “on” pilot light for each circuit
controlled (remote contactor). Panel and box are to be sheet steel construction,
with see-through steel framed acrylic door and trim, handle and lock.
Enclosure protection IP 42 to IEC 144 for indoor installation and IP 55 for
outdoor installation.
2.09 SOCKET OUTLETS:
A. General: provide injection moulded plastic base socket outlets with selfadjusting,
non-expanding contacts to prevent permanent distortion, arranged
for side and/or back connection and with screw terminals accepting at least
three parallel branch-circuit wires.
B. Socket shall be German standard 10/16A DIN (2P+E)..
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C. Duplex Sockets: provide two socket outlets mounted in parallel under one
common plate with break-off feature for two circuit connection.
D. Weatherproof Socket outlets provide types indicated, enclosed in surface or
recessed mounted cast metal box and with spring-retained gasketted hinged
flap. Enclosure is to be pre-designed box and cover for type of socket outlet
specified.
E. Floor Socket Outlet: single phase, German standard, suitable for installation in
heavy duty, water tight floor box with cover to match floor finish, subject to
the Engineer’s approval (Refer to section 16135 of the specification for floor
box requirements)
F. Industrial type switched sockets shall be used in Electrical/Mechanical plant
rooms, parking, workshops etc. and shall be of all rigid metal construction for
surface mounting.
G. Three phase sockets shall be 3 poles + neutral + earth 16 Amp. Unless other
wise indicate made of rigid metal construction.
H. Sockets shall be supplied complete with plugs.
I. All sockets located inside the archive shall be self fire extinguishing.
2.10 PLUGS:
A. Type: compatible with type of socket outlet specified, break resistant, of
impact resistant moulded insulating material (separable construction) with
solid brass pins and cord grip and of shape providing easy hand-grip for
removal. Special purpose type plugs are to be approved by the Engineer.
B. Quantity: supply number equal to 20% of total number of each type of socket
outlet supplied.
C. Cord and Plug Sets: match voltage and current ratings and number of
conductors to requirements of the equipment being connected.
1. Cord: rubber-insulated, stranded copper conductors, with silicon rubber
jacket. Grounding conductor has green insulation. Ampcity is equipment
rating plus 30 percent minimum.
2. Plug: male configuration with nylon body and integral cable-clamping jaws.
Match to cord and to receptacle type intended connection.
2.10 CEILING OUTLET (LIGHTING OUTLETS)
A. Ceiling outlet shall be considered as lighting outlet and shall be designed for
the safe and efficient permanent connection of cables to a wiring system to
lighting fixtures.
B. Ceiling outlet shall consists of a base and cover moulded in white non-tracking
insulating material.
C. The cover shall either screw on to the base or be held on the base by not less
than two screws. No connections or terminations shall be incorporated into the
cover but it may include an outgoing flexible cable clamp.
D. The base shall include terminals for incoming cable and outgoing flexible
connections with a separate terminal unit for the earth connection.
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E. The complete ceiling outlet and its attachment to the ceiling shall be designed
to support safely either the maximum weight suspended by a flexible cord
from the ceiling outlet in accordance with IEE wiring regulations, or a
luminaries directly attached to the ceiling outlet and having a weight up to a
maximum of 25 Kg complete including shades and lamps.
F. Ceiling outlet shall incorporate means for avoiding any mechanical load or
strain from flexible cables being transmitted to the terminals.
2.12 LIGHTING CONTACTORS
A. Type: double pole for single phase and neutral circuits, and triple pole for three
phase circuits, mechanically held, electrically operated, rated 600V, of current
ratings shown on the Drawings, and complying with IEC 947-4 category AC
5a for discharge lamps and category AC 5B for incandescent lamps.
B. Contacts: copper alloy, with silver cadmium alloy double break contacts
designed for switching inductive ballast loads and switching of tungsten lamp
loads.
C. Auxiliary Contact: as required to provide specified interlocks and signals as
shown on the Drawings, or required by the Specification, with one N.O and
one N.C spare contacts.
D. Enclosure: unless forming party of system housed in sheet steel panel,
contactor is to be provided with IP 42 enclosure for indoor use or IP 65
enclosure for outdoor use.
E. Local Control: each contactor whether part of a system or separately enclosed
is to have on pilot lights
F. Central Control: provide interfacing elements to match with control system,
BACS system, and remote control wiring terminals as necessary and as shown
on drawings.
2.13 FLOOR BOXES:
Large floor service boxes shall be a steel recessed floor box with four
wiring compartments or as indicated in drawings. Fully adjustable mounting
hardware. Wiring compartments shall be interconnected within the box with
removable dividers. Each floor box shall use flush activation. The cover shall be
suitable for the application. Specifically a flush access hatch with carpet trim or
flush furniture partition feed. The exact type of cover for each box will be
determined by the owner in conjunction with the interior finishes. Boxes with no
connections shall be equipped with the flush access hatch. The covers shall not be
installed until the floor covering or tile is installed. The boxes shall be protected
from damage during construction.
2.14 AUTOMATIC HAND DRYERS:
A. Appearance and Material: strong, shockproof aluminum alloy shell; low noise .
B. Structure : equipped with double protection temperature control.
C. Function Type : automatic operation.
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D. Double Protection Temperature Control: cuts off temporarily at 125o , fuse
blows out at 135o C; abundant air flow, 60 – second overtime protection.
E. Safety Features : overheating protection, anti-water leakage protection &
earthed against electric shocks.
F. Hand dryer cover shall be a one-piece, heavy-duty, rib reinforced, die-cast zinc
alloy. It shall be lightweight, unbreakable, rustproof and all exposed surfaces
shall be bright chrome plated or finished with chip-proof, electro statically
applied epoxy paint and fastened to a wall plate by two chrome plated tamperproof
bolts.
G. All internal hand dryer parts shall be coated according to Underwriters'
Laboratories, Inc. requirements.
H. Hand dryer Control assembly is activated by an infrared optical sensor located
next to the air outlet. The dryer shall operate as long as hands are under the air
outlet, with a 35-second lockout feature if hands are not removed.
I. The entire dryer shall be listed under the re-examination service of
Underwriters' Laboratories, Inc.
J. The hand dryer shall be guaranteed to be free from defects for a period of two
(2) years. Warranty shall include factory performed labor as well as the repair
or exchange of defective parts, at manufacturer's option.
K. Hand dryer heating element is constructed of Nichrome wire and mounted
inside the blower housing, thereby being vandal proof. It shall be protected by
an automatic resetting thermostat, which shall open whenever air flow is cut
off and shall close when flow of air is resumed. It shall produce an air
temperature of up to (57°C) at a (35°C) ambient room temperature at the hands
( [102 mm] below air outlet).
2.15 MULTIPLE SOCKET OUTLESTS STRIPS:
A. 16A – TWO CORD OUTLETS STRIPS:
- It will be located under raised floor tiles.
- It should be used for workstations power (Normal/UPS) feedings.
- Complied with BS.7671& BS.6396 .
- Fitted with suitable circuit protection.
- Provided with earthing kit.
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- Provided with suitable power plug for the incoming cable.
- Consisting of two or three 10A power cord outlets.
- Suitable for working in 35o C ambient temperature.
B. 10A – THREE SOCKET OUTLETS STRIPS:
- It will be located under workstations on the cable management system.
- It should be used for each three workstations power (Normal/UPS)
feedings.
- Complied with BS.7671& BS.6396 .
- Fitted with suitable protection fuse.
- Provided with earthing kit.
- Provided with suitable power plug for the incoming cable.
- Consisting of three 6A power sockets ( German standards ).
- Connected to the two cord outlets strip by 3*3mm2 multicore pvc/pvc
cable which has suitable cord at the both ends.
- Suitable for working in 35o C ambient temperature.
PART 3 - EXECUTION
3.01 INSTALLATION OF WIRING DEVICES AND ACCESSORIES:
A. Install wiring devices and accessories as indicated, in accordance with
applicable requirements, Local Electrical Code or Regulations and in
accordance with recognized industry practices to fulfill project requirements.
B. Coordinate with other work, including painting, electrical boxes and wiring
installations, as necessary to interface installation of wiring devices with other
work.
C. Install wiring devices only in electrical boxes which are clean, free from
building materials, dirt, and debris.
D. Install galvanized steel wall plats in unfinished spaes.
E. Locate switches at strike sides of doors, whether shown on the Drawings or
not. In locating outlets allow for overhead pipes, ducts, variations in
arrangement, thickness of finishing’s, window trim, paneling and other
architectural features. Electrical Design Drawings: generally shown
approximate locations of outlets and equipment. Exact locations are to be
determined from interior finishing’s and detail drawings. Any condition that
would place an outlet in an unsuitable location is to be referred to the Engineer.
F. Unless otherwise shown or instructed, mount lighting switches and socket
outlets generally at 1200 mm and 300mm from finished floor level
respectively. Mount switches with long dimension vertical and operating
handle, if of the toggle type, up when switch is in the on position.
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G. Connect switches in the phase wire. Do not run neutral wire through switch
boxes switches having neutral shunt or bridge.
H. Provide additional outlets to those shown on the Drawings as required by
equipment manufacturers for control or other wiring.
I. Securely Exposed Outlet Boxes: securely fasten to wall with machine screws
to permanent inserts or lead anchors.
J. Provide neat openings for recessed boxes, allowing for thickness of finishing’s,
and use extension rings if required. Repair damaged finishing’s to original
condition before installation of fittings or plates.
K. Install exposed boxes and plates plumb, square and parallel to finished wall
surface. Exposed plates covering recessed boxes are to rest neatly on wall
surface without gaps, and fully covering the box.
L. Arrange grouped outlets uniformly and neatly so that use of devices is
convenient and clear.
M. Follow manufacturer’s instructions for installation of waterproof and explosion
proof fittings and connection to conduit system to fully achieve required degree
of protection.
N. Connection of appliance:
1. Where appliance is designed to adapt directly to outlet box, extend electrical
wiring to incoming terminals inside appliance.
2. Where appliance is not designed to adapt to outlet box, install connecting wiring
in flexible conduit or special flexible cable, mechanically protected, firmly fixed
to outlet box cover plate and to terminal box on appliance, with suitable
accessories.
O. Install wiring devices after wiring work is completed.
P. Install wall plates after painting work is completed.
Q. Tighten connectors and terminals, including screws and bolts, in accordance
with equipment manufacturer’s published torque tightening values for wiring
devices.
R. Protection of wall-plates and sockets upon installation of wall-plates and
sockets advise contractor regarding proper and cautious use of convenience
outlets. Prior to Owner accepting project, replace those items which have been
damaged, including those burned and scored by faulty plugs.
S. Provide equipment earthing connections for wiring devices, unless otherwise
indicated.
T. Verify exact locations of switches and receptacles with architectural and
interior design drawings.
U. Install switches indicated on plans for the various rooms directly adjacent to
the entrance door and as shown on the approved shop drawings.
V. Check the architectural drawings for the door swings and locate all switches on
the lock side of the openings. Verify in field prior to switch outlet installation.
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W. Coordinate all final mounting heights with architect's elevations and details
prior to installation. Where heights are different than those indicated or
specified, the architectural heights take precedence.
X. Where two or more switches control more than one 220 volt branch circuit,
barrier boxes to prevent 380 volts occurring in any one box.
Y. Where more than one wiring device is mounted in the same location, gang
mount such devices under a common face plate.
Z. Vertically align devices shown above each other on the drawings on a common
centerline unless shown otherwise.
AA. Where an outlet is indicate as serving a specific piece of equipment, locate
outlet as required by equipment or layout roughing drawings. Work from
approved equipment and roughing shop drawings to locate outlets.
BB. Fully coordinate switched mounted in architectural frames, posts and mullions
with all trades involved. Submit method of wiring and style switch to Architect
for approval.
CC. All lighting fixtures, sockets, switches and electrical outlets shall be fed and
connected by multi-core thermoplastic cables.
3.02 PROTECTION:
A. Protect installed components from damage. Replace damaged items prior to
final acceptance.
3.03 FIELD QUALITY CONTROL:
A. Carry out visual inspection of fittings and equipment for fixing and
workmanship.
B. Testing: prior to energizing circuits, .test wiring for electrical continuity, and
for short-circuits. Ensure proper polarity of connections is maintained.
Subsequent to energizing, test wiring devices and demonstrate compliance
with requirements, operating each operable device at least six times.
C. Test ground fault interrupter with both local and remote fault simulations in
accordance with manufacturer recommendations
END OF SECTION 16143