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re: Generator help and questions for a newb

Posted on 4/28/24 at 10:23 pm to
Posted by LSUtigerME
Walker, LA
Member since Oct 2012
3806 posts
Posted on 4/28/24 at 10:23 pm to
Your source (generator) is only putting out 30A maximum and has its own breakers to protect itself.

You can use an adapter to plug the 30A source into the 50A inlet box without any issues. The 50A inlet breaker is sized to protect the wires in the house, not the source (generator). The generator will have its own protection.

Since you have the interlock, there is also not a risk of accidentally powering up the cord/inlet box from the service connection, which could send 50A to the 30A rated cord.
Posted by bapple
Capital City
Member since Oct 2010
11910 posts
Posted on 4/28/24 at 10:28 pm to
quote:

You can use an adapter to plug the 30A source into the 50A inlet box without any issues. The 50A inlet breaker is sized to protect the wires in the house, not the source (generator). The generator will have its own protection.



+1

It's not a big deal to utilize something that is oversized, like running 30A through a 50A receptacle. Where you'll run into problems is if something is undersized, like a cable or breaker. In that case you'd constantly trip the breaker or have to worry about melting that cable.
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