In the field of equipment maintenance, installation or modification, the ability to read and understand schematics and drawings is an absolute must. Any electrical working or drawing consists of lines, symbols, dimensions, and notations to accurately convey engineering’s design to the workers, who install the electrical system on the job. To be effective, technical staff should be able to read and understand electrical drawings and schematics for equipment maintenance, installation, or modification.
This course is designed to help students to understand the fundamentals of electrical drawings including logic diagrams, wiring lay out and CAD.
After completing this course, students will possess a professional knowledge on different types of drawings and diagrams and understand their purpose and flow.

 

WHO SHOULD COMPLETE THIS COURSE?

• HVAC Technicians
• Machine Operators
• Apprentices
• Alarm Technicians
• Electricians
• Facility Managers
• Non-Electrical Engineers
• Building Engineers
• Stationary Engineers
• Multi-craft/Cross Training Personnel
• Instrumentation engineers
• Mechanical engineers

 

COURSE OUTLINE

ELECTRICAL DRAWINGS

• Drawings – relevance to engineering
• Drawings in plant engineering
• Manufacturing organization
• Standards & their necessity
• CAD & drawing standards
• Typical engineering drawing & its parts

 

TWO DIMENSIONAL DRAWINGS

• Different types of drawing
• Sectional drawing & Block diagram
• Electrical layout drawing & types
• Area classification drawing
• Wiring diagram, Drawing scales, block
• Symbology for various types of drawings
• Symbols as per electro-technology standards
• Use of non-standard symbols

 

LINE & LOGIC DIAGRAMS

• Single line diagram – advantages & example
• 3 line diagram – applications  
• Terms associated with single line diagram
• Purpose of schematic diagram
• Power & control circuit diagrams
• Commonly used symbols
• Applications of schematic diagrams
• Cross reference between coils and contacts
• Practical exercise
• Logic diagrams & solid state logic circuits
• Logic gates – AND, OR, NOT, NAND, NOR and Exclusive OR

 

CABLING, WIRING LAYOUT AND CABLE SCHEDULE

• Different types of cabling drawings
• Wiring diagrams
• Different types of wiring drawings
• Difference between cabling & wiring drawings
• Cable schedule
• Example of cable schedule
• Example of conduit schedule
• Example of cable tray schedule
• Example of cable routing schedule
• Cable system drawings
• Example for cable layout
• Cable tray installation
• Example of control cable interconnection
• Conventions used
• Practical exercise – wiring drawing
• Conventions used for layout drawings

 

CAD & DRAWING PROCESS FLOW

• Introduction to CAD
• Capabilities of CAD – editing, accuracy, storage & product design
• Use of symbol & symbol libraries
• Symbol attributes
• Automated bill of material generation
• Layers and their use in sharing information
• Drawing management system
• Planning & assigning of drawings
• Drawing process flow and its steps
• Revision control and ownership of drawing
• Oil & gas application
• Hazardous area zones in layouts