Electrical Design Course

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Electrical Design manual for commercial & residential projects Upto 33KV voltage level
1. General : Fundamentals of electricals
  • Types of electricity
  • Source of electricity
  • Generation, Transmission & distribution of electricity
  • Ohms law
  • Symbols
  • Definitations, Terms & terminologies
  • Important formulas
2. Codes & Standards to be followed
  • Indian electricity rules
  • National electrical code of India (NEC)
  • National building code of India (NBC)
  • Applicable standards issued by Bureau of Indian standards (BIS)
  • Institute of Electrical & Electronics Engineers (IEEE)
  • Regulations of local fire authorities.
  • Requirements stipulated by Pollution control Board for Noise, Air &
  • Water Pollution
3. Electrical equipments and it’s application used in the installation
  • Control devices
  • Measuring devices
  • Circuit protection devices
  • Transformers
  • Diesel generators
  • Capacitors
  • Bus ducts, Busbars, Cables (HT/LT) & wires
  • Motors & Pumps
  • Luminaries – General & Emergency
  • Isolators & socket outlets
  • UPS/Inverter& Battery banks
  • Earthing or Grounding
  • Lightning arrestor
  • Building Management Systems(BMS)
4. Means of electrical distribution for installation
  • Panels(HT/LT)/Switch Board/Motor control centers (MCC’s)/Final Distribution boards (DB’s)
  • Cable trays,trunking or raceways, conduits & underground Pipes (Concrete/PVC)
5. Major electrical loads used in the installation
  • Lighting load – Internal & external
  • Utility power load
  • HVAC loads like Chillers, AHU’s, FCU’s, Pumps, Fans etc.
  • PHE & FF loads like Water transfer pumps, Booster pumps, Fire
  • Fighting pumps, Jockey pumps etc.
  • Lifts (Elevator) load
  • Computer & data centre (Server) loads for office building
6. Electrical design calculations
  • Load & maximum demand calculation
  • Transformer sizing calculation
  • DG sizing calculation
  • Short circuit calculation
  • Voltage drop calculation
  • Capacitor sizing calculation
  • Cable sizing calculation
  • Earthing calculation
  • Lighting calculation
  • UPS/Inverter sizing calculation
  • Battery sizing calculation
7. Various design stages & Sequence of electrical design procedure
Concept design stage:
  • Understanding the building plans, elevations & sections
  • Gathering specific data from the utilities(Electricity board)
  • Understanding clients specific requirements
  • Assessment of the type of installation like outdoor/indoor substation(Point of supply)
  • Preparation of basis of design which should include the cost estimate.
Schematic design stage:
  • Preparation of Load calculation to arrive maximum peak demand
  • Sizing of all Equipments,cables,cable trays
  • Electrical design calculations
  • Preparation of single line schematic of electrical distribution system with metering options
  • Preparation of equipment layouts like Substation, plant rooms.
  • Preparation of lighting, small power, earthing & miscellaneous layouts
  • Preparation of technical specification
Detailed design stage:
  • Preparation of detail layouts including sectional details wherever required
  • Coordination with other services like HVAC,PHE & FF layouts
  • Preparation of bill of quantities(BOQ)
  • Issue for tender
Construction design stage:
(Generally this stage is performed by electrical Contractors)
  • Preparation of shop drawings based on the tender drawings issued by Electrical consultants for installation.
  • After installation the entire installation shall be tested & commissioned with the respective authorities.
  • As built drawings shall be prepared and handed over to client’s representative.

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