how to make automatic changeover |using two contactor and timer relay

Automatic changeover switch can be easily made with the help of two contactors. Simple wiring connection has been explained in this video. Please watch the complete video. #electrician #housewiring #homemade #idea दो काॅन्टेक्टर के माध्यम से दिए गए विडिओ के अनुसार ऑटोमेटिक चेन्जऑवर स्विच बना सकते है । Thanks 😊