Designing a Two-Source Power System with Automatic Switchover

AI Thread Summary
The discussion centers on designing a two-source power system that automatically switches between a normal AC source and an inverter. The goal is to prioritize the normal AC source, with the inverter serving as a backup when the primary source fails. The user initially considered using relays but later determined that a contactor would be more suitable for the design. Safety concerns regarding working with 120V AC are acknowledged. The conversation concludes with the user confirming the solution found.
newbie123
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Hello,

I have two 120V sources. One is inverter and one is normal AC from sticking contact. And i want only one of them as output. Output will be from inverter or 120V from sticking contact.

I want normal AC from sticking contact to be active. If it is shutdown so i want output will automatically switched over to inverter. And if 120V from sticking contact is back so i want it automatically switch to 120V sticking contact.

I have thinked to use relays, but need some help. How to design it out.

Thanks
 
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Playing with 120V ac is pretty dangerous, you better watch out. Does it need to be controlled by a low DC current or will a switch work?
 
Hi,

I have found out. I neeed a contactor to do this work. Thanks
 

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