What different between Ladder Diagram Schematic Diagram and Wiring Diagram

What different between Ladder Diagram Schematic Diagram and Wiring Diagram

Uploaded by: Eliana

On: 24 Nop, 2018

Viewed:1,251 times - 2 day, 11 hour, 31 minute, 41 second ago

Downloaded: 0 times -

Category: Wiring

What different between Ladder Diagram Schematic Diagram and Wiring Diagram Rating:
27 out of 100 based on 297 user ratings

Wiring Diagram Definition

Wiring Diagram Definition

Wiring diagrams tend to show a close representation of the interior position of electrical components in a control cabinet and/or circuit. Sometimes wire diagrams can closely represent a picture. The only difference is components are represented by electrical symbols whether they are NEMA standard or IEC standard symbols, whereas a pictorial will have a more realistic representation of an electrical component.

Wiring diagrams can be very accurate for depicting equipment layout. All connection wires are shown and connected from one component to another. Wiring diagrams are used widely by electricians when connecting electrical or electronic equipment and by technicians when maintaining equipment.

fan wiring diagram.gif

Schematic Diagram Definition

Schematic diagrams do not often show the physical relationship or layout of the components in the circuit; however, schematic diagrams are useful for understanding the sequence of operations or the operation of the circuit.

Schematic diagrams are not intended to illustrate the physical size or appearance of the device nor the location. In troubleshooting, electrical schematics are essential because it enables a technician to trace the circuit and its function without regard to the actual location or physical size of the component.

schematic view of a simple circuit.gif

Ladder Diagram Definition

A ladder diagram is used to point out relationships between circuit components, not the actual location of the components. Ladder diagrams provide a fast and easy understanding of the connection of electrical components in a circuit or operation.

fan wiring diagram.gif

The arrangement of symbols in ladder diagram should promote clarity and understanding. Graphic symbols, abbreviations, and device designations are drawn per industry standards. The circuit should indicate the most direct path of logical sequence. Lines between the symbols can be horizontal or vertical but should be drawn to minimize lines from crossing each other.

Ladder diagrams should not be confused with a one-line diagram. A one line diagram has only one line between individual components. Ladder diagrams; however, often show multiple lines leading to and from components whether they are series or parallel connections.


The ladder diagram, shown in figure 4, is easy to read since there are only two basic parts- the rails and the rungs. The rails are the two dark vertical lines that represent the power source to the control circuit. The control circuit voltage is usually rated at 12V-120V depending on the rated values of the loads connected in the circuit. The rungs are the horizontal lines that illustrate how the control devices and loads are interconnected to make up the control circuit.

1.A ladder diagram translates similarly to a book. Read the ladder diagram from left to right then up to down in order to understand the sequence of the operation.
2. The loads in a ladder diagram are always and shall be connected in parallel on the rungs.
3. The load is the last component connected to the right side of the rail unless there is a protective contact that opens the circuit in the case of an overload event.
4. Control devices are connected between the left side of the rail and the load or other control devices and the load. Control devices are never to be connected from the left rail to the right rail. The result of this type of connection will result in a short circuit.

ladder diagram 2.gif


Related Posts

Ford Escort 90-99 Electrical Schematic + Wiring Diagram

Take a look at the diagram then you will see the numbers to see the number's description you can watch it below or upper just arrange which suit.

7 - generator;
23 - storage battery;

How to make a civil wiring diagram

Creating an electrical scheme is of primary importance for making an electrical installation. Not only does it allow you to have everything under control (or almost), shedding light on the general ...

05 Saturn Ion Fuse Box

Saturn ION 2005 Fuse Box Diagram Auto Genius 01/11/2018 · Saturn ION (2005) – fuse box diagram. Year of production: ...

How to Read Automotive Wiring Diagrams

Wiring diagram is very important things for mechanic who will repair or fix a car, cause wiring diagram will guide you to fix the problem occur on your car by following the flow of wire. Automotive...

Lets talk about Electronics and What is Electronics?

Electronics is an enjoyable hobby that can even be turned into a career at some stage. It can be enjoyed by people of all ages starting from about 12 years old. This hobby entails building circuits...

How to wire three-way switches

In this tutorial will show you how to wire three-way switches for your home. It would be mighty inconvenient to have to cross a darkened room in order to turn on the wall switch at the opposite ent...

As the fastest growing demand of circuit and wiring diagram for automotive and electronics on internet based on different uses such as electronic hobbyists, students, technicians and engineers than we decided to provide free circuit and wiring diagram base on your needed.

To find circuit and wiring diagram now a day its easy. E-learning through internet as a right place to search an exact circuit and wiring diagram of your choice and it's much fun and knowledgable. On internet you will find thousands of electronic circuit diagrams some are very good designed and some are not. So you have to modify them to make them according to your needs but some circuits are ready to make and require no changes.

There are many categories of circuit and wiring diagrams like automotive, audio circuits, radio & RF circuits, power supply circuits, light circuits, telephone circuits, timer circuits, battery charger circuits etc. There are many types of circuit and wiring diagrams some are very easy to build and some are very complicated, some are so small and some contain huge list of parts.

We provides free best quality and good designed schematic diagrams our diagrams are free to use for all electronic hobbyists, students, technicians and engineers. We also provides a full educational system to students new to electronics. If you are new to electronics you are a student or a electronic hobbyist and want to increase your knowledge in electronics or want to understand electronics in a very easy way so this is the right place for you we provide electronics beginner guide tutorials to easily understand complicated electronic theory. Our mission is to help students and professionals in their field.