This course discusses the installation of direct current machines, installation of alternating current machines, motor safety and security measures. Direct current machine installation includes parallel connection of the direct current generator, how to connect the direct current motor, setting the rotation speed of the direct current motor. Alternating current machine installation includes the rotation direction and phase sequence of a three-phase motor, how to start a three-phase motor, the triangle star connection of a three-phase motor and regulating the rotational speed of a three-phase motor. Motor safety includes zero voltage safety, maximum thermal and magnetic safety