How to Read Electrical Schematics

This course is ideal for:

• Apprentices
• Plant managers
• Maintenance supervisors
• Engineers
• Facility managers
• Building contractors

and anyone involved in installing, maintaining, or troubleshooting power systems in industrial, commercial, or institutional environments.

Course Outline: How to Read Electrical Schematics, Drawings and Blueprints

1. INTRODUCTION TO ELECTRICAL DRAWINGS, BLUEPRINTS, AND SCHEMATICS

• Overview of the different types of documentation and their purposes.
• Electrical Drawings: A general term covering all types of diagrams used in work.
• Electrical Blueprints: Focus on the physical layout and installation of systems in buildings and facilities.
• Electrical Schematics: Functional diagrams showing the operation and connections of circuits using symbols.

2. READING AND INTERPRETING PRINTS

• Understanding the layout and organization of different prints.
• How to identify the type of document you are working with (drawing, blueprint, or schematic).

3. ELECTRICAL SYMBOLS

• Common symbols used in drawings, blueprints, and schematics.
• Understanding NEMA, IEC, and ANSI device numbers and their significance across different document types.

4. ARCHITECTURAL BLUEPRINTS (CONSTRUCTION DRAWINGS)

• Introduction to blueprints specific to many installations.
• Understanding plan views, floor plans, elevations, sections, and pictorial views.
• Using detail drawings and schedules for installation purposes.

5. SINGLE-LINE DIAGRAMS AND POWER DISTRIBUTION SCHEMATICS

• How to interpret single-line (one-line) diagrams used for power distribution.
• Understanding block diagrams, power risers, and one line represents power distribution schematics for system operation.

6. COMMON COMPONENTS

• Identifying common components across blueprints, drawings, and schematics.
• Understanding component applications and operations.

7. TROUBLESHOOTING USING ELECTRICAL SCHEMATICS

• Using schematics to perform voltage, resistance, and continuity checks.
• Understanding manual and automatic circuits.
• Diagnosing typical problems using schematics as a guide.

8. ELEMENTARY ELECTRICAL DIAGRAMS (SCHEMATICS)

• Ladder diagrams: Depicting sequential control of systems.
• Wiring diagrams: Showing the physical connections between components.
• Three-line diagrams: Detailed representation of three-phase systems.
• Block diagrams: Simplified representations of system components and their interactions.

9. REVISING AND MARKING UP ELECTRICAL DRAWINGS, BLUEPRINTS, AND SCHEMATICS

• Making changes to field copies during the installation process.
• Maintaining archival copies for future reference.

COURSE SCHEDULE:

Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time