TLE

• Electrical Symbols


  Are small drawings or pictograms used to represent various electrical devices
• Electrical Symbols

  Symbols

  
• Electrical Symbols

  Symbols

  
• Safety Alert


  Indicates that a person should observe extra awareness
• Prohibition 


  Means that any activity is not allowed as stated by the symbol
• Danger


  Specifies hazardous situation which will result to a serious injury
• Warning


  Specifies a potentially hazardous situation if not avoided could result to injury
• Read & Understand


  Instruction manual means that a person should make some reading before doing an activity
• Wear eye protection


  Indicates that a person should wear glasses or any related protection for the eyes
• Electrical Hand 


  Indicates electrical hazard is present in the area
• Voltage Danger


  Indicates high voltage in the area and surrounding equipment
• Electrical wiring diagram


  The flow of current in a conductor or wite can be represented by diagrams
• Pictorial Diagram


  Is a sketch or electrical circuit that shows the external appearance of each component
• Schematic Diagram


  Is a sketch showing the components of the circuit using standard electrical symbols.
• Series Circuit


  Is a circuit in which lamps are arrange in a chain, so that the current has only one path to take.
• Parallel Circuit


  Is a circuit in which lamps are connected across wires. The voltage across each load or parallel circuit is the same.
• Electrical Plan


  Is a graphical presentation of electrical wiring connections to install if a particular house or building.
• 3 formulas of Power

  P= V×I

  P= V² / R

  P= I² × R
• Voltage


  V = I × R
• Current

  I = V/ R
• Resistance 


  R= V / I
• 0.001

  Milliwatt
• 1,000

  Kilowatt
• 1,000,000

  Megawatt