Motors

Electric motors have been around since the turn of the 20th century. There is a lot of information here about them including their history, theory and code provisions. Listed below are the links to the various motor topics.

• Electromagnetism and Motor Principles
• In order to understand how motors work it is important to understand how magnetism works with electricity.


• Direct Current Motors vs. Alternating Current Motors
• Here you will learn about how the two types of current affect motors.


• Phase and Frequency of Motors
• Learn how single phase and three phase affect motor frequency.


• Three Phase Motors
• Here there is a lot of in depth theory and application of three phase motors.


• Squirrel Cage Motors
• This section explains the uses, construction and principles of squirrel cage motors.


• Charts for Sizing Overcurrent Protection for Motors
• These useful charts are based on NEC 430.


• Relevant Nikola Tesla Patents
• Nikola Tesla was an inventor whose genius produced 111 patents. Here you will find patents that involve his motor discoveries.

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