construction measurement iii week 4 electrical single phase
TRANSCRIPT
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Construction Measurement III(SBQ 3314)
Electrical Installations Single Phase
Lecture By Dr Sarajul Fikri Mohamed
Department of Quantity Surveying, FAB, UTM Skudai Johor, Malaysia
05th January 2010
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Pre-cast and Pre-stressed ConcreteCIVIL WORKS
Electrical Installations
Fire Fighting Installations
Air Conditioning Installations
Unit/Split Package/Central
Landscape Works
Single Phase Three Phase
Gas Installations
ELECTRICAL WORKS
MECHANICAL WORKS
LANDSCAPE WORKS
Hard Landscape Soft Landscape
MAIN COURSE COMPONENTS
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2009 Sarajul Fikri Mohamed
Read and check drawing
Drawing numbering and scale
used.
Taking off list Heading and Description
Take off
Annotation / Side Cast
Query list
Final checking
BQs FOR ELECTRICAL
INSTALLATIONS SINGLE PHASE
PROJECT DRAWINGS
Output
3
Building services technology
Electrical components
Measurement rules: SMM2
Description Taking Off
Case Study
KNOWLEDGE
Table of contents
ELECTRICAL INSTALLATIONS: SINGLE PHASE
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2009 Sarajul Fikri Mohamed
1. Electrical installations: main components
2. SMM2 measurement rules for electrical installations
3. Taking off list for electrical installations
4. Heading and description.
5. Case study: CADANGAN MEMBINA DEWAN SERBAGUNA TAMAN
KOTA JAYA, KOTA TINGGI, JOHOR
6. Studio work
Table of contents
ELECTRICAL INSTALLATIONS: SINGLE PHASE
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2009 Sarajul Fikri Mohamed
Electrical installation
and components
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Electrical distribution
ELECTRICAL INSTALLATIONS
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Electrical distribution
ELECTRICAL INSTALLATIONS
Power transmission and distributions
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Types of electrical work
ELECTRICAL INSTALLATIONS
From substationto substation
External
Supply
From DB to powerpoints and fittings
InternalSupply 240V with a less
load and domesticuse
Single
Phase
415V with abigger load andsupply needed for(comercial danindustrial)
Three Phase
Two options
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Voltan yang dikenakan ialah 415 v dan juga boleh mencecah 880 v bagikilang yang menjalankan kerja berat seperti kilang besi dan kilang simen.
Ia mempunyi tiga pengalir hidup dan neutral.
Pengalir-pengalir hidup dikenalkan dengan kod-kod aksara berikut:
LI atau R (red): Fasa pertama
L2 ataU Y (yellow): Fasa kedua
L3 atau B (blue) : Fasa ketiga
Single and three phase
ELECTRICAL INSTALLATIONS
Bagi penggunaan rumah kediaman, voltan tiga fasa adalah terlalu tinggi dan
merbahaya.
Oleh itu voltan rendah daripada satu fasa lebih sesuai digunakan untuk tujuan
domestik.
Voltan piawai satu fasa ialah 240 v. Biasanya satu pengalir hidup digunakanbersama pengalir neutral iaitu:
RN
YN
BN
Three Phase
Single Phase
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VIDEO PRESENTATION I
SINGLE PHASE ANDTHREE PHASE : THE THEORY
Fakulti Alam Bina
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2009 Sarajul Fikri Mohamed
INCOMING SERVICES
MAIN INSTALLATION
POWER INSTALLATION
LIGHTING INSTALLATION
CABLES
Main components
ELECTRICAL INSTALLATIONS
ELECTRICAL APPLIANCES
CONDUIT AND FITTING
LIGHTNING PROTECTION SYSTEM
TESTING
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Electrical distribution
ELECTRICAL INSTALLATIONS
INCOMING SERVICES
MAIN INSTALLATION
POWER INSTALLATION
LIGHTING INSTALLATION
ELECTRICAL APPLIANCES
FINAL SUB-CIRCUIT
CABLE
CONDUIT
LIGHTNING PROTECTION
TESTING
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VIDEO PRESENTATION 2
BASIC HOMES ELECTRICALSYSTEM
Fakulti Alam Bina
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POWER
INSTALLATION
LIGHTING
INSTALLATION
ELECTRICAL
APPLIANCES
3 pin switch socket Fluorescent light
Wall light
EXIT sign
High bay light
EL light
Exhaust fan
Sweep ceiling fan
CONDUIT &
FITTING
CABLES TESTING
Chased into brickwallCeiling level
2x1c/2.5mm PVC cable2x1c/1.5mm PVC cable
On completion of the electricalinstallation test all switches, switch
socket, wiring etc and make good
all defects an leave everything
perfect working order to the
satisfaction of the S.O and TNB
Main components
ELECTRICAL INSTALLATIONS
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Electrical typical legend in M&E drawings
ELECTRICAL INSTALLATIONS
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DB & FUSES
ELCB
MAIN SWITCH FUSE
TNBMETER
CUT OFF FUSE
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To monitor and record the total amount of electrical
energy that is being consumed for the purpose ofcharging consumers through the issuance of
electricity bills .
Property of TNB
2 types of meter
Analog
Digital
METERING BOARD
TNB CUT OUT FUSE
Consumers back up protection 2 purposes:
As a measure of back up protection to the fuse in theDistribution Board and also ELCB
As mean of cutting of electrical supply to the consumerswhen required
Cutout fuse is connected to live wire and it is use tocontrol current supply. Both belong to TNB.
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Main switch
ELECTRICAL INSTALLATIONS
Locate at the main incoming supply of the consumers Distribution Board
The purpose is to cut all of the power supply to the consumer in the event thatany maintenance work needs to be carried out.
Connect, cut off and control the current if their any excess current.
A two terminal one way switch that contains fuse.
Main switch
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Circuit breaker : ELCB
ELECTRICAL INSTALLATIONS
A mechanical device to connect and cutout circuit It will cut off any faulty circuit immediately Sensitive to lightning 2 types:
Earth Leakage Circuit Breaker: ELCB Miniature Circuit Breaker: MCB
ELCB
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This is where distribution of electrical energy to various connected load takeplace inside the consumer premises.
It also distributes the path for the earthing and neutral wire, and acts asmeans of flowing leakage and return current respectively.
Distribution board
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Miniature circuit breaker : MCB
ELECTRICAL INSTALLATIONS
MC
B& FUSE
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No. Of Ways Outline Dimensions (mm)
M.C.B. SIZE L W H H1
8.0 143 215 71 93
10.0 175 255 71 93
14.0 175 320 71 93
18.0 182 380 71 93
22.0 210 460 71 93
Consumer unit: 1 row : 8-22 modules
ELECTRICAL INSTALLATIONS
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No. Of Ways Outline Dimensions (mm)
M.C.B. SIZE L W H H1
28 434 320 71 93
Consumer unit: 2 row : 28 modules
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No. Of Ways Outline Dimensions (mm)
M.C.B. SIZE L W H H1
42 434 320 71 93
Consumer unit: 3 rows : 42 modules
ELECTRICAL INSTALLATIONS
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RCCB AND RCBO INSIDE A DISTRIBUTION BOARD
WIRING IN DISTRIBUTION BOARD
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WIRING TO DISTRIBUTION BOARD
MAIN SWITCH AND ELCB
MAIN SWITCH
4 POLE ELCB
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Measurement rules
ELECTRICAL INSTALLATIONS
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29
Clause Description
R4-R5 Equipments and Control Gear
R6-R8 Fittings and Accessories
R9-R13 Conduits, trunking and cable tray
R14-R17 Cabling
R18 Final Sub-circuits
R19 Earthing
R20-R21 Ancillaries
R22 Sundries
R23-R24 Builders Work
Related SMM2 clauses
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Measurement rules
ELECTRICAL INSTALLATIONS
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R.2 CLASIFICATION OF WORK
a. Incoming servicesb. Standby equipmentc. Mains installation-switch gears, sub-main cables.
d. Power installatione. Lighting installationf. Heating installationg. Electrical appliancesh. Electrical work
k. Clock installation
I. Sound distribution
m. Alarm systemn. Earthing system installation
p. Lightning protection installation
q. Special services
r. Any other installation
s. Trunking, ducting and cable trays
Measurement rules
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LOCATION OF ELECTRICAL WORKS
R3 - Location of work
a. Internallyb. Externally
Measurement rules
ELECTRICAL INSTALLATIONS
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ELEMENT: ELECTRICAL SERVICES ubb/N/01
BIL UNIT KUANTITI
A Preamble
B
M 3.05
M 3.05
C
M 1.00
M 1.00
To Collection
All quantities in this bill are provisional quantities
subject to remeasurement upon construction of the
said item. The tenderer must allow for testing the
electrical installation and handling over of test
certificate to S.O.
Incoming Services-Externally (All Provisional)
25mm x 25mm Telekom PVC trunking from lightingarrestors run at high level and drops to computer
server.
100mm UPVC class 'D' pipe complete with long
bend extended beyond drain for entry of TNB,
incoming cable to MSB inclusive of excavation and
backfilling.
4 x 25mm pilestas (AC) cable in UPVC class 'D'
pipe (m/s) buried underground to TNB panel.
75mm x 38mm electrical trunking from meter to
DB/M3B.
Incoming Services-Internally (All Provisional)
Cadangan Membina Dan Menyiapkan Sebuah Makmal KomputerDi Sekolah Kebangsaan Sri
Selangor, Petaling Jaya, Selangor.
KETERANGAN HARGA
(RM)
JUMLAH
(RM)
BILLS OF
QUANTITI
ES FOR:
INCOMINGSERVICES
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ITEM DESCRIPTION UNIT
POWER INSTALLATION
(INTERNALLY)
Cable
A2 x 1C-2.5mm2 PVC insulated colour coded
cable as specified drawn into conduit.
M
Cl R.2.1(d)
Classification of work
Cl R.3.1(a)
Location of Work
Cl R.14.2
Generally
Cl R.15.2(a)
Cables
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Measurement rules
ELECTRICAL INSTALLATIONS
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EQUIPMENT AND CONTROL GEAR (NO)
R4 Equipment (generator, motors)
Control gear (isolator, switch fuses)
Packaged item described with a manufacturers detail.
Limiting dimension on size shall be given.
Connecting cable ends or cable tails shall be deemed to be
included with the item.
Platework and supporting steelwork Section P.
Measurement rules
ELECTRICAL INSTALLATIONS
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METERING BOARD
Equipment and Control Gear
Measurement rules
ELECTRICAL INSTALLATIONS
Manufacturers details and dimension on size
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Usually for houses and small loaded.
Situated inside building.
Including equipment such as circuit breaker and fuse
SMM2 Refer to clause R.4.1(NO.)
Distribution board
ELECTRICAL INSTALLATIONS
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EQUIPMENT SUPPORTS : R5
Equipment supports enumerated and described (NO)
Method of fixing given in the description with clauses R.1.5-6.
Measurement rules
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FITTING AND ACCESSORIES (N0)
R6 Fittings (clock , alarm bells)
Accessories (socket outlets)
R7 Pendant fittings NO length stages 300mm
R8 Accessories - NO (in gang)
a) rated capacity
b) type
c) no. accessories in each gang
Measurement rules
ELECTRICAL INSTALLATIONS
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Measurement rules
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Switch socket outlet & socket
point.
Different Types for different
capacity. SMM2 Refer to clause R.18.2
(No.)
Measurement rules
ELECTRICAL INSTALLATIONS
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SOCKET
Power installation
ELECTRICAL INSTALLATIONS
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TV Co-axial socket outlet 1 gang 15A Switched
Socket Outlet
13A 2 gangswitched socket outlet
13A 2 gang switched
socket outlet with neon
Power installation
ELECTRICAL INSTALLATIONS
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13A 2 gangs/s/o
13A 2 gangs/s/o with neon
Bell push switch
Telephonesocket
Power installation
ELECTRICAL INSTALLATIONS
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Fluorescents Lights and
emergency light.
Specification refer to
manufacturer.
SMM2 Refer to clause
R.4.1(NO.)
Lighting installation
ELECTRICAL INSTALLATIONS
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Fluorescent light
KELUAR emergency sign
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Measurement rules
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Fan, MATV point and
telephone point.
SMM2 Refer to clause R.6,R.22.1 (NO.)
Electrical appliance
ELECTRICAL INSTALLATIONS
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Measurement rules
ELECTRICAL INSTALLATIONS
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CONDUIT, TRUNKING AND CABLE TRAYS
R9.1 Conduit and fittings. (m)
a) type
b) size
c) specificationd) saddles & crampets pattern
e) nature of background
Except for final sub-circuit (measured overall conduit fittings)
e.g tees, elbows, bend, cover plates, bushes, locknuts, nipples,stopping-lugs and reducing bushes), short running lengths and
branches).
Measurement rules
ELECTRICAL INSTALLATIONS
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PVC Conduit
Conduit, trunking and metal tray
ELECTRICAL INSTALLATIONS
Galvanized Iron Conduit
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CONDUIT, TRUNKING AND CABLE TRAYS
Classification :
a) conduits fixed to surfaces
b) conduits fixed in chases
c) conduits embedded in floor screeds
d) conduits embedded in concrete
Measurement rules
ELECTRICAL INSTALLATIONS
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Conduit inside the suspended ceiling
Conduit, trunking and metal tray
ELECTRICAL INSTALLATIONS
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Conduit, trunking and metal tray
ELECTRICAL INSTALLATIONS
Conduits fixed in chases
brickwall
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Drilling works to chases wiring to the brickwall
Conduit, trunking and metal tray
ELECTRICAL INSTALLATIONS
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CONDUIT, TRUNKING AND CABLE TRAYS
R9.2 Special boxes, adaptable box, floor trap boxes,
purposes made boxes, rectangular junction boxes required fordrawing in cables , flameproof boxes & expansion joint
( N0 EXTRA OVER)
Measurement rules
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Munson ring
Conduit support
ELECTRICAL INSTALLATIONS
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Conduit Adaptor
(Isometric to PG Thread)
Coupling
Flange Coupling
Long Nipple Short Nipple
Solid Male
BendReducer
Conduit assecories
ELECTRICAL INSTALLATIONS
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Stainless
Steel ChainLead
WasherNeoprene
Washer Stopping Plug
Locking Ring Locknut Female BushMale Bush
Conduit assecories
ELECTRICAL INSTALLATIONS
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Terminal Box Angle Box Through Box
Inspection Elbow Branch Two
Way BoxTee Box
Conduit assecories
ELECTRICAL INSTALLATIONS
El i l d i
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Electrical conduit
ELECTRICAL INSTALLATIONS
M t l
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CONDUIT, TRUNKING AND CABLE TRAYS
R9.3 Flexible conduits & extensible conduit (NO)
i) size ii) overall length iii) type
iv) size & type termination glands
R9.4 Components & special boxes (N0)
( for making connection of conduit in trunking )
Measurement rules
ELECTRICAL INSTALLATIONS
M t l
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CONDUIT, TRUNKING AND CABLE TRAYS
R10.1 Trunking (m)
i) type
ii) size
iii) no & size compartment
iv) method of connecting
R10.2 Fitting (NO) and EXTRA OVER
R10.3 Connection between trunking & item of equipment &control gear use flanges and or the forming of apertures
(N0)
Measurement rules
ELECTRICAL INSTALLATIONS
T ki
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A rectangular metal made system
that either horizontally or vertically
fixed to wall.
A good mechanical protection.
Made from 18 gauge steel sheet. Available size:
50mm x 50mm
70mm x 100mm
150mm x 75mm
150mm x 150mm
Equipped with bend, tee, and
junction.
Trunking
ELECTRICAL INSTALLATIONS
T ki
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Cable and trunking use for connection from main to distribution board or
distribution board to socket. Size and Material.
SMM2 Refer to clause R.15, R.9 (M)
Trunking
ELECTRICAL INSTALLATIONS
T ki fitti
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90r Gusset Bend
Front Lid(Traditional)
90r Gusset Bend
Inside Lid
(Traditional)
45r BendOutside Lid
45r Bend
Front Lid
90r Gusset Bend
Front Lid45r Bend
Inside Lid
Trunking fittings
ELECTRICAL INSTALLATIONS
Measurement rules
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CONDUIT, TRUNKING AND CABLE TRAYS
R10.4 Pin racks (NO)
i) type; and ii) size
R11.1 Busbar Trunking (m)
Clauses R.10.1
a) type; b) width; c) rated capacity; and
d) method of capacity
R11.2 Tap-off units, feeder units, fire barries & the like (NO)
Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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CONDUIT, TRUNKING AND CABLE TRAYS
R12.1 Trays (m)
i) type; ii) width; and iii) method of jointing
R12.2 Stools (NO)
i) type; and ii) size
R12.3 Fitting (NO and EXTRA OVER )
Measurement rules
ELECTRICAL INSTALLATIONS
Cable tray
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Cable tray
ELECTRICAL INSTALLATIONS
Measurement rules
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Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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CABLES
R15.1 Cables (m)
measured as the net length of the conduit, trunking or tray.
other cable measured as fix (without any allowance for sag)between boxes, equipment control gear, fittings, accessories
etc.
except for final sub-circuits.
Measurement rules
ELECTRICAL INSTALLATIONS
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The conductors used in domestic installations are called cables andconsist of a conductor of low resistance such as copper and aluminiumsurrounded by an insulator of high resistance such as rubber andplastic.
Cable sizes are known by the nominal cross sectional area of theconductor and up to 2.5mm2 are usually of one strand.
Flexible PVC insulated cord
Types of wire
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Types of wire
ELECTRICAL INSTALLATIONS
Measurement rules
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Cables
R15.2 Cables (m)
i) type ii) size iii) classification
CLASSIFICATION
a) drawn into conduits or ducts
b) laid or drawn into trunking
c) laid or drawn into trunking and laced into ciucuit
d) fixed to surfaces
e) wrapped around pipework
f) laid in trenches
g) fixed to insulators in overhead lines
h) suspended from catenary cables
R15.4 Cable joints (NO)
R15.5 Line taps (NO)
i) size ii) type of cable iii) shrouds (type)
Measurement rules
ELECTRICAL INSTALLATIONS
Cable classification
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Underground cable Fixed to wall Fixed in ceiling
Cable classification
ELECTRICAL INSTALLATIONS
Measurement rules
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CABLE
R15.6 Cable termination glands (NO)
i) type & size of cable ii) type of gland
R15.7 Conduit: boxes, adaptable boxes & the like used with
cable termination glands (NO - separately)
i) type ii) size of cable iii) joint-boxes, sealing boxes (type)
R16.1 Components for supporting cable given in the descriptionof the cable stating type and spacing.
Alternatively, components of combination system (NO)
Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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CABLE
R17 Connections to public mains, making good public highway and
other work which may only carried out by Public Undertaking
or Local Authority PROVISIONAL SUM
Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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FINAL SUB-CIRCUITS
R18.1 Distribution sheets and drawing showing layout shall be given.
R18.2 Points (NO)
i) cable & conduit installations
ii) ampere rating
iii) classification
CLASSIFICATION
a) Lighting points: one way or two way
b) Socket or switch socket pointsc) Immersion heater points, cooker outlet points etc.
Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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Measurement rules
ELECTRICAL INSTALLATIONS
Measurement rules
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EARTHING
R19.1 Tapes for earthing (m)
i) size; ii) type; andiii) type & spacing of saddles, cleats, clip holdfasts & the like
R19.2 Conductor connections & junctions (NO)
i) type; and ii) size
R19.4 Test clamps (NO)
i) type ii) size; and iii) method of connecting
Measurement rules
ELECTRICAL INSTALLATIONS
Earthing installation
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Typical earth-electrode pit
Earthing using cooper stripEarthing & Bonding requirement
Earthing installation
ELECTRICAL INSTALLATIONS
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Earth electrode pit
Cooper strip
Measurement rules
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EARTHING
R19.5 Earth electrodes (NO)
i) type ii) size; and iii) driving electrode into ground
R19.6 Air termination points (NO)
i) type ii) size; and iii) method of connecting
ELECTRICAL INSTALLATIONS
Lightning protection installation
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Air Termination (NO.)
Copper Tape Roof Conductor. (M)
SMM2 Refer to clause R.19.6, R.22.2, R.19.
Lightning protection installation
ELECTRICAL INSTALLATIONS
Measurement rules
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ANCILLARIES
R20 Loose keys, tools, spares and the like (NO separately)
i) type; and ii) quantity
Rack for holding tools (NO)
ELECTRICAL INSTALLATIONS
Measurement rules
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SUNDRIES
R22.1 Marking the position of holes, mortice, chases & the like
(ITEM)
R22.2 General earth bonding & earthing (ITEM)
R22.3 Disconnecting, setting aside & refixing equipment (ITEM)
R22.4 Temporary operating each installation (ITEM)
R22.5 Testing each installation (ITEM)R22.6 Preparing plans or diagrams of the installations (ITEM)
ELECTRICAL INSTALLATIONS
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2009 Sarajul Fikri Mohamed
Summary of
measurement rules
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
1) Main Installation
sub main cables stating the type and size m R.2.1.c
meter panel shall be described with no R.4.2
manufacture's detail
specification
distribution board ditto no
cables stating the type, size and the m R.15.2
location ( net length )
conduits stating the type, external size m R.9.1
and the location
sundries
mark the holes & etc. stating the nature of works & item R.22.1
relevant particulars
general bonding each installation item R.22.2
testing ditto and stating particulars of item R.22.5
any special insurance cover
required by Employer
SUMMARY OF MEASUREMENT RULES
SUMMARY OF MEASUREMENT RULES
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
2) PowerInstallation
fittings & accessories
socket unless stated all shall be enumerated no R.6.1
cables stating the type, size and the m R.15.2
location ( net length )
conduits stating the type, external size m R.9.1
and the location
final sub-circuit stating the ampere rating no R.18.2
sundries
mark the holes & etc. stating the nature of works & item R.22.1
relevant particulars
general bonding each installation item R.22.2testing ditto and stating particulars of item R.22.5
any special insurance cover
required by Employer
SUMMARY OF MEASUREMENT RULES
SUMMARY OF MEASUREMENT RULES
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
3) Lighting Installation
fittings & accessories
switch unless stated all shall be enumerated no R.6.1
cables stating the type, size and the m R.15.2
location ( net length )
conduits stating the type, external size m R.9.1
and the location
final sub-circuit stating the ampere rating no R.18.2
sundries
mark the holes & etc. stating the nature of works & item R.22.1
relevant particularsgeneral bonding each installation item R.22.2
testing ditto and stating particulars of item R.22.5
any special insurance cover
required by Employer
SUMMARY OF MEASUREMENT RULES
SUMMARY OF MEASUREMENT RULES
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
4) Electrical Appliances
fittings & accessories
switch unless stated all shall be enumerated no R.6.1
cables stating the type, size and the m R.15.2
location ( net length )
conduits stating the type, external size m R.9.1
and the location
final sub-circuit stating the ampere rating no R.18.2
sundries
mark the holes & etc. stating the nature of works & item R.22.1
relevant particulars
general bonding each installation item R.22.2
testing ditto and stating particulars of item R.22.5
any special insurance cover
required by Employer
SUMMARY OF MEASUREMENT RULES
SUMMARY OF MEASUREMENT RULES
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
5) Earthing System
Installation
cables given in accordance with clause R.15 m R.19.1
copper tape stating the type & size m R.19.1
conductor connection stating the type & size no R.19.2
test clamps ditto & method of connecting no R.19.4earth electrodes ditto & driving electrodes into no R.19.5
groundshall be given
air termination stating the type & size & method of no R.19.6
connection
sundries
mark the holes & etc. stating the nature of works & item R.22.1
relevant particulars
testing each installation and stating item R.22.5
particulars ofany special insurance
cover required by Employer
SUMMARY OF MEASUREMENT RULES
SUMMARY OF MEASUREMENT RULES
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ITEM METHOD OF MEASUREMENT UNIT CLAUSE
6) Builder's Work
excavating trenches for cables and pipe ducts n. exc. m R.24.1
55mm nominal size refer to clause
D.12.9 & exc. 55mm refer to clause
V.2cable covers stating the type & size m R.24.2
SUMMARY OF MEASUREMENT RULES
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2009 Sarajul Fikri Mohamed
Taking off list
Taking off list
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Preamble
General notes
Main installation
Meter panel (no)
Main Switch Board (no)
Distribution Board (no) Main & sub main cabling (m)
Conduit and trunking (m)
Sundries (no)
Testing (item)
Power installation
Fittings and accessories
Socket (no)
Point (no)
Cables (m)
Conduits (m)
Final sub circuit (no) Sundries
Mark the holes (item)
General earth bonding (item)
Testing (item)
ELECTRICAL INSTALLATIONS
Taking off list
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Lighting installation Fittings & accessories Swicth (no) Point (no)
Final sub-circuit (no)
Sundries Mark the holes (item) General earth bonding (item) Testing (item)
Lightning installation Copper tape (no) Test clamps (no) Air termination (no) Earth chamber(no)
SundriesMark the holes (item) Testing (item)
Builders work Excavation trenches (m)
ELECTRICAL INSTALLATIONS
TAKING OFF LISTS
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TAKING OFF LISTSDOMESTIC HOUSING SINGLEPHASE
1.Main Installation- sub main cables m
- meter panel no
- distribution board no
- cables m- conduits no
- sundries
= mark holes item
= general bonding item
= testing item
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2. Power Installation- fitting & accessories
= socket no
- cables m
-conduits m
- final sub-circuit no
- sundries
= mark holes item
= general bonding item
= testing item
TAKING OFF LISTSDOMESTIC HOUSING SINGLEPHASE
TAKING OFF LISTS
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3. Lighting Installation- fittings & accessories
= switch no
- cables m- conduits m
- final sub circuit no
- sundries
= mark holes item
= general bonding item
= testing item
TAKING OFF LISTSDOMESTIC HOUSING SINGLEPHASE
TAKING OFF LISTS
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4. Electrical Appliances- fitting & accessories
= switch no
- cables m
- conduits m- final sub circuit no
- sundries
= mark holes item
= general bonding item
= testing item
TAKING OFF LISTSDOMESTIC HOUSING SINGLEPHASE
TAKING OFF LISTS
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5. Earthing System Installation- cables m
- copper tape no
- test clamps no- conductor connection no
- earth electrodes no
- air termination no
- sundries
= mark holes item
= testing item
O S SDOMESTIC HOUSING SINGLEPHASE