Electrical

For international quality buildings there are lot of electrical systems are there which shall be designed and erected as per international codes and standards like NEC. The improper designs of a project of Electrical systems without proper calculations will result in dangerous situations. This module contains lighting system, power system, fire alarm system, Telephone system, CCTV, MATV, clock, nurse call, data and networking cabling which are required to be carried out by an Electro Mechanical Contracting Company.

BUILDING ELECTRICAL SYSTEM

Electrical Engineering is a very wide field in Engineering. As the development in different countries all over the world is increasing, the scope of Electrical Engineering and the demand for Electrical Engineers are also increasing. New buildings are erected as part of the development of the county. “Building Electrical System” course gives an overview of the procedures involved in the planning, designing, estimation, execution,testing and commissioning of small and big buildings.

The course contents are;

INTRODUCTION

  • Fundamental of Electrical Engineering
  • Role of Electrical Design Engineer in the design of buildings
  • Design of Simple Electrical circuits, List of symbols
  • Electrical Supply systems
  • Domestic wiring
  • Voltage systems in different countries
  • Auto Cad Drafting practice
  • Understanding the architectural and structural drawings of buildings for the design,coordination and execution of Electro mechanical systems

PROJECT PRINCIPLES

  • Project organization chart – Client, PM, Main contractor, E&M contractor,
  • Subcontractors, etc…
  • BOQ, Specification and Contract drawing
  • Various job opportunities for degree holders and technically sound candidates
  • Procedure of design and shop drawing
  • Standards and codes to be followed in electrical system design (NEC, IEC, NEMA, BS tec..)

LIGHTING DESIGN

  • Selection of Lighting fixtures for different types of applications
  • Different types of Lamps
  • Lux Calculation using DIALUX software
  • Preparation of Lighting layouts and details
  • Arrangement of lighting fixtures, circuiting of light points, switches
  • Lighting control systems
  • Emergency lighting and exit sign lighting
  • External and site lighting

POWER DESIGN

  • Design of power layouts for different types of buildings
  • Types of sockets, power sockets, three phase sockets, disconnect switches
  • Normal, Emergency and UPS power circuits
  • Equipments power

LOAD ASSESSMNET

  • Lighting load calculation
  • Load calculation of general purpose sockets and equipments
  • AHUs, Chillers, package units, split AC, window AC, FCUs, exhaust fans, boiler, water heaters, pumps, elevator, fire pumps loads  Connected load, demand factor, demand load, maximum demand

PANEL BOARDS

  • Branch panels, sub main and main panels
  • Preparation of panel board schedules
  • Load balancing in panels
  • Selection of branch and main circuit breakers, short circuit current
  • Circuit breakers – MCB, MCCB, RCCB, RCBO, ACB
  • Panel enclosures, busbars, installation of panels
  • MCC Panels

LOW VOLTAGE CABLES & CABLE SELECTION

  • Cables

                       – Conductors and insulation

                       – Copper and Aluminium conductors

                       – Different types of cables – Single core, 3 core, 4 core, 3½ core cable

                      – Armored and unarmored cable and its applications

  • Cable Selection

                   – Current carrying capacity of cables

                   – Practical method for determining the smallest allowable cross sectional area of circuit conductors

                   – Derating factors for cables installed in air and ground

                   – Conductors in parallel

                   – Cable arrangements

  • Voltage drop calculation

CONDUITS  &  FITTINGS USED IN ELECRICAL INSTALLATION

  • PVC, EMT, Rigid steel conduits
  • Underground pipes
  • Flexible conduits
  • Liquid tight and weather proof conduits
  • Conduit couplings, adaptors, clamps
  • Octagonal boxes, back boxes, pull boxes and their applications
  • Threaded rods, c-channels, supports

CABLE TRAY

  • Different type of cable trays
  • Cable trunkings and cable ladders
  • Installation methods of cable trays
  • Fittings and accessories
  • Preparation of cable tray layouts
  • BOT –Bottom of tray
  • Coordination with HVAC system, fire fighting, drainage, water supply, chilled water piping and other systems

SUBSTATIONS, ELECTRICAL DESIGN CALCULATION

  • Preparation of single line diagram
  • Design of sub main and main panels
  • Selection of transformer, oil type and dry type transformers, loading of transformers
  • Diesel generator, prime and stand by generator, ATS, fuel tanks and pumps
  • UPS Selection, Battery sizing
  • Capacitors banks for power factor improvement, capacitor bank sizing calculation
  • Brief description about medium voltage switch gear, ring main unit, medium voltage cable
  • Preparation of trench layouts, site layouts for external cables directly buried in soil or laid in duct banks
  • Introduction to Busway

EARTHING & LIGHTNING PROTECTION

  • Need of earthing
  • Type of conductor-solid conductor, stranded conductor, bare tape
  • Earth rods and pits
  • Air terminal rods, spacing of air terminal rods
  • Square clamps, DC tapes
  • Down conductor and ground conductor

FIRE ALARM SYSTEM

  • Need of fire alarm system in building
  • Preparation of fire alarm layouts
  • Smoke detectors & heat detectors
  • Manual call station and sounders
  • FACP-Fire alarm control panels
  • Looping of detectors
  • Duct detectors, beam detectors

LOW CURRENT SYSTEM

  • Data network system
  • Telephone system
  • IP-Telephony system
  • Public address/sound system
  • CCTV system
  • Master clock system
  • MATV system
  • Introduction to Building management system (BMS)

BOQ & SPECIFICATION

  • Bill of Quantity
  • Costing and budgeting
  • Project specification

Course Duration: 2 Months + 1 Month Gulf Live Project Training (Regular), 1 Month (Fast Track)