Construction Of PVS Conduit Wiring System Of Two Bedroom Bungalow
TABLE OF CONTENT
Title Page
Litter of Transmittal
Release Page
Approval Page
Dedication
Acknowledgement
Abstract
Preface
CHAPTER ONE
1.0
INTRODUCTION
1.1
Types of Conduit System
1.2
Uses and Advantages
1.3
Choice of Conduit
1.4
Materials Used
1.5
I.E.E Regulation
CHAPTER TWO
2.0
REVIEW OF COMPOUND UNITS
2.1
Accessories
2.2
Circuit Diagram of Lighting, Ring and Consumer Control Unit.
2.3
Table of Space Factors
2.4
Load Schedule
2.5
Rating Factor
CHAPTER THREE
3.0
Construction Procedure
3.1
Conduit Installation
3.2
Conduit Capacity
3.3
Wiring System
3.4
Conduit Wiring
3.5
Building Plan with Design of Electrical Wiring Systems
3.6
Layout Diagram of P.V.C Conduit
CHAPTER FOUR
4.0
Operation and Testing
4.1
Verification of Polarity Test
4.2
Insulation Test
4.3
Earthling Test
4.4
Types of Earth Electrode
4.5.
Circuit Breaker
4.6
Fuses
4.7
Calculation Under Diversity
4.8
Durability
4.9
Safety
4.9.1 Applications
CHAPTER FIVE
5.0
Conclusion
5.1
Recommendation
5.2
Bill of Quantity
5.3
Bibliography
CHAPTER ONE
1.0
INTRODUCTION
In today’s domestic residence, electricity play a vital function base on how it is
used. The institute of electrical engineering (IEE) wiring regulation (15th
Edition) defines an electrical installation as an assembly of associated
equipment for the fulfillment of specific purpose and having contain coordinated characteristics.
Based presented by engineering principle and intelligent conformity to the
safety provision of the National Electrical Code. In the application of
conductors, switches, insulators, fuses, circuit breakers, consumers control
units, lighting fixtures and other related institution component. The design
information is presented so as to clearly instruct the installer in constructing the
overall electrical installation to achieve the design intent and implement the
engineering concept.
1.1
TYPES OF CONDUIT
There are different types of conduit namely;

Non-metallic conduit

Light gauge conduit

Heavy gauge conduit

Flexible metallic conduit

This wall conduit

Rigid conduit
1.2
USES AND ADVANTAGES / TYPE
1.1.3 NON-METALLIC CONDUIT:Many types of non-metallic conduit are available, but schedule polyvinyl
chloride (PVC) is the one mostly used. It is a regid heavy walled flame –
retardant, heat and sunlight – resistant conduit. It may be used in wet on day
location in walls, in ceiling and above or below the ground. It is advisable not
to substitute PVC irrigation pipe for schedule low PVC conduit. This type of
conduit can be use with metal a non-metallic boxes but the non-metallic boxes
are not the same as those use with type NPLC cable.
1.3.0 LIGHT GAUGE CONDUIT
Light gauge conduit is produced from trip steel which are form into a tube.
This type of conduit has an open seam and is only used for small installation at
a below 25oc, the light contraction of the tube makes is unsuitable for bending
although it can be set.
1.3.1 HEAVY GAUGE CONDUIT
There are two types of heavy gauge conduit. Heavy gauge welded conduit and
solid draw conduit.
Heavy gauge welded conduit is formed from strips of heavy gauge sheet steel
and is welded at the seam. This is the most common type of conduit and is
supplied in size from 16mm to 32mm. Solid brawn conduit is produced by
drawing and heated to over a raw forming a heavy gauge seamless tube. This
type of conduit is more expensive than welded steel conduit and is only used
for flameproof installation.
1.3.2 FLEXIBLE METALLIC CONDUIT
This types of conduit is generally called Greenfield resembles armored cable in
appearance but is more adaptable than cable because various sizes and numbers
of wire can be pulled into it after it is installed.
This type of conduit be used plastic-covered Greenfield when the internal that
have a determinative effect on the wire insulation this metal conduit has a
thermoplastic outer sheath covering similar to that used on type T wire, the
characteristics and uses of which are detailed in.
1.3.3 THIS WALL CONDUIT
Electrical Metallic Tubing (EMT), commonly called thin-wall conduit, is a
metallic tubing that can be use for expose on concealed electrical installations.
Ti use should be contended to dry interior locations because it has a very
plating that does not protect it form rusting when exposed to the elements or
hurried condition. It is less expensive than regul conduit and much easier to
installation, the process of bending require less effort, and the ends do not have
to be threaded. In companion to the other wring systems. It ranks behind regid
conduit but ahead of the other types of wring when considering the quality and
durability of the installation. For this reason and because of the decreased cost
in material labour, it is most generally specified for home building
construction.
1.3.4 RIGID CONDUIT
Black enamel a galvanized regid conduit is approved for used under most
conditions and in most locations. Metal conduit and fittings that are protected
foam corrosion enamel may only be use indoors and in areas that are not
subject to severe corrosion. Although regid conduit is generally the most
expensive type of wining, installation, its inherent strength permits installation
without running beards and provides additional damage protection. Its capacity
facilitates carrying more conductors in one run that in any other system and its
rigidity permits installation with fewer supports than the other types of wiring
systems.
1.3
CHOICE OF CONDUIT
Today PVC is available alternative to other materials for virtually any
application. Its combination of advantage make it a preferred choice when a
conduit system is needed. Although there are many types of wiring ystem
which can be used to provide a safe efficient, imperative and economical
installation but in this project we emphasis on P.V.C. conduit wiring system.
This when PVC was initially introduced to the electrical field, it was
considered a substitute material with limited and special applications for
example, because of its PVC design and resistance to corrosion, PVC was
found useful in damp, corrosive environments such as chemical and fertilizer
plants. As its use by engineers and contractor increased and its system design
expanded, PVC’s advantages become evident. Installation of conduit wiring
provides mechanical protection and accessible safety to persons and property
and provides convenient and accessible electrical raceway system has adequate
capacity for future expansion and is readily adaptable to changing conditions.
This write-up provides most up to data and comprehensive information about
PVC conduit from basic raw material to installation characteristics of the
finished product.
1.4
MATERIALS USED
Though, there are many types of conduit materials with regard to I.E.E
regulation. Therefore, the materials used in this very project have been outlined
in details under bills of quantities. The I.E.E regulation strictly explained the
actual installation of wring and most of the material used shall be compliance
with the appropriate British standard specification provide materials. The
following discussion will review the advantage of those standard materials as
well as their limitation. Regid conduit has the same size designation as water
pipe conduit smaller than ½ inches can only used in finished building where
extension are to be made under plaster. In this installation 5/16 inch condition
are to be made under plaster. In this installation 5/16 inch conduit or tubing is
permitted. The size of conduit is determined by the inside diameter for e.g ½
inch conduit has an inside diameter of approximately ½ inch. Standard conduit
has an inside diameter of approximately ½ inch. Standard conduit size used in
interior wiring are ½, ¾, 1, ½, 1¼, 2 and 2 ½ large size are available for special
use in certain commercial and factor installations.
1.5
I.E.E REGULATION
These regulation covers in details the actual installation of wiring and
apparatus in the building and requirement that most of the materials used shall
comply with the appreciate British standard specification provided materials
are tough from times of repute, no difficulty should arise in concention with
BSS.
Generally the I.E.E. regulation related principle to the design selection,
inspection and testing of electrical installation, whether permanent or
temporary safety especially from fire, shock, and burns. Hence good
workmanship and proper materials shall be used and all equipment shall be
suitable fro the maximum power demanded by the current using equipment
when it is function in its intended manner.
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