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Reading Electrical Drawings

 

Class Length 1-Day

Includes "Hands-On" Tracing Through Electrical Drawings

 

Course Outline

 

Standards

        NEMA-ANSI-IEEE

        IEC

 

Symbols

        All Common (NEMA & IEC)

        Switches, Loads, Contacts

 

Circuit Reading/Tracing

        Multiple Loads

        Momentary

        Holding

        Start/Stop

        Interlocks

                Electrical & Pushbutton

        Permissive

        Logic Circuits

                AND, OR, NOT, Combinations

        Master Control

        Solenoid Control

                Hydraulic & Pneumatic

        Motor Starting

                Jog

                Run

                Multiple Start/Stop

                Pushbutton Sequencing

                Hand/Off/Auto

                Jog/Off/Run

                Forward/Reverse

                Time Delay (On/Off)

                Two Speed

 

Control Circuit Drawing Topics

        Ladder & Single Line Drawings

        Component Location Drawings

        Cross Referencing

        Wire Numbers

        Terminal Strip Connections

        Components (Loads & Switches)

        Current Flow

        Lines - Rungs - Rails

        Manual Control

        Automatic Control

        Magnetic (Isolating) Control

        Two-Wire

                Wiring Diagrams

                Ladder Drawings

        Three-Wire

                Wiring Diagrams

                Ladder Drawings

        Slow Speed Compelling

        Motor Control Center Typicals

       

Troubleshooting Basics

        Using the Ladder Diagrams

        Locating Components

        Using Terminal strips

        Using Wire Numbers

 

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