1. electrical symbol

1. ELECTRICAL
SYMBOLS

2. ELECTRICAL
SYMBOLS
A graphical
representation of
basic electrical and
electronic devices or
components.
It is used in circuit and
electrical diagram to
recognize a component.

3. ELECTRICAL
SYMBOLS
Name Meaning / Function Symbol
Electrical Wire Conduct Electricity
Connected Wires Wires are Connected
Not Connected
Wires
Wires are not Connected
Electrical Wiring Symbols for Wire

4. ELECTRICAL
SYMBOLS
Electrical Wiring Symbols for Ground
Name Meaning / Function Symbol
Earth Ground
Protection against
Electrical Shock
Chassis Ground
Connected to Chassis of
a Circuit
Common Ground
For Analog and Digital
Grounding

5. ELECTRICAL
SYMBOLS
Power Supply Symbols
Name Meaning / Function Symbol
Voltage Source
Constant Voltage
Source
Current Source
Constant Current
Source
AC Voltage Source
Source of AC
Voltage
Battery
Constant Voltage
Source
Battery Cell
Constant Voltage
Source
Generator
Mechanical Voltage
Source

6. ELECTRICAL
SYMBOLS
Lamp and Light Bulb Symbols
Name Meaning / Function Symbol
Lamp or Light Bulb
Generates Light with
Flow of Current
Lamp or Light Bulb
Generates Light with
Flow of Current
Lamp or Light Bulb
Generates Light with
Flow of Current

7. ELECTRICAL
SYMBOLS
Switch and Relay Symbols
Name Meaning / Function Symbol
SPST Toggle Switch
Disconnect Current when
Open
SPDT Toggle Switch
Select Between 2
Connections
Push Button Switch (N.O)
Switch Momentary –
Generally Open
Push Button Switch (N.C)
Switch Momentary –
Generally Closed
DIP Switch Onboard Configuration
SPST Relay Single Pole Single Throw
SPDT Relay Single Pole Double Throw
Jumper Jumper to Close Connection
Solder Bridge Solder Connection

8. ELECTRICAL
SYMBOLS
Other Important Electrical Wiring Symbols
Name Meaning / Function Symbol
Electrical Switch box
Box to Install
Switches
Circuit Breaker
Trip to Break
the Electric
Circuit and Stop
Flow of Electricity
Dishwasher Outlet
Outlet for
Dishwasher
Fan Outlet Outlet for Fan

9. ELECTRICAL
SYMBOLS
Junction Box Install Junction Box
TV Outlet Outlet for Television
Exhaust Fan Outlet for Exhaust Fan
Water Heater Outlet
Outlet for Water
Heater
Telephone Jack Outlet
Outlet for Telephone
Jack

10. ELECTRICAL SYMBOLS
Electrical Panel Install Electrical Panel
Distribution Box Install Distribution Box
Thermostat Install Thermostat
Air Condition Install Air Condition
Fire Alarm Install Fire Alarm

11. Draw the following symbols of the
following.
1. Wires connected 6. Earth ground
2. Generator 7. Bulb
3. Current source 8. Battery cell
4. Chassis ground 9. SPST toggle switch
5. Voltage source 10. Wires not connected.