Alternate currents
Tesla left Edison in 1885.
He formed his own laboratory “Tesla Electric Company” in 1887 on Grand street in New York.
He built single-phase and several poly-phase systems.
On May 16 1888, at an AIEE meeting in New York, Tesla presented a lecture entitled “A New System of Alternate Current Motors and Transformers.”
Shortly after, G. Westinghouse employed Tesla as a consultant.