Electrical installation of an office block

Τίτλος

Electrical installation of an office block

Θέμα

Electrical drafting--Detailing

Electrical engineering

Δημιουργός

Tziortzis, Stelios

Πηγή

Higher Technical Institute

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

2001

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

EED0396

Σύνοψη

The main objective of this project is to design the electrical installation and main
electrical services of a block of offices. The design should include the normal
electrical installation, the structured cabling system including the telephone network
and the cabling for the computer network and the lightning protection system.
This block of offices consists of a basement, a ground floor and other 4 floors. The
ground the first and second floor have the same owner so they will feed from the
same meter (Ml). Third floor b€,f longs to a different owner so it will be feed from
another meter (M2) and the third floor will be feed fro meter 3 (M3). The lift and all
other communal loads will be feed from meter Mk.
The first chapter of this project examines the theory of protection and earthing. This
chapter is very important because protection is one of the main goals that must be
fulfilled in order to avoid accidents and losses of life.
Chapter 2 examines the theory of inspection and testing. This is also a very important
chapter because before feeding with power our installation, it must be first inspected
and tested from us and then from EAC. If our installation does not fulfill the
requirements for safety during the inspection of the EAC we must redesign the
installation in order to have the permission to feed it with electricity.
Chapter 3 is based on the theory and calculations for illumination design. The
illumination calculations are carried out to find the require number of fitting to be
used. In my project I have an example calculation with the point to point method in
order to show how complicated are the calculations to be done by hand. The actual
illumination design of this project was done with the help of the computer program
SLI.
The electrical design calculations are carried out at chapters 4 to 7. The electrical
installation in cct's ie. Lighting cct's, power cct's (socket outlets and fixed
appliances). In the electrical design calculations we find the appropriate overcurrent
protective device (type and rating), live and CPC conductors cross sectional areas
and we take into consideration voltage drop limitations and thermal constrains for the
Cpc.
At Chapter 8 and 9 I have designed the structured cabling system of the building.
Structured cabling systems are very popular in nowadays. In a structured cabling
system voice and data are transferred in a common cable (CAT5 in our case) with the
help of the computer network. In the structured cabling systems the telephone
network is the same as the computer network.
Finally at chapter 10 I carried out the calculations for the lightning protection system
Which is very essential in tall buildings with very high concentration of people.