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UTS6H: One Circuit trips when going from Gen Power back to Utility Power

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Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

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UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This question was originally posted by Rudy on APC forums on 1/30/2015


Hi, I've got a UTS6H being powered by a Honda EU2000i. I had my first outage last week, and everything worked great. (Still have some learning to do related to load shedding). However, my issue is that whenever I got from Generator power back to Utility Power (whether when testing or with a real power outage), one circuit breaks. It's the Circuit to the kid's bedrooms. Which is the one circuit that I don't want to break. It's not a huge deal, I just have to go down and reset the circuit, but has anyone come across this and found a solution? The Kid's bedroom circuit also powers the home theater. But, when I test, everything in the home theater is off. Feel free to ask questions about the setup if that can get me to a resolution.


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BillP
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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Rudy on APC forums on 2/3/2015


Thanks Angela, I'll try a new breaker and report back.

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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Angela on APC forums on 1/30/2015


What type of breaker is it that is tripping in the panel? 

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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Rudy on APC forums on 1/31/2015


it's just a 15 amp circuit. Set to Lights on the UTS.

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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Angela on APC forums on 2/2/2015


But what about the breaker? What type is it - a standard breaker or something like AFCI/GFCI?

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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Rudy on APC forums on 2/2/2015


It's a standard breaker. Though I may need to do a double check if the bathroom GFCIs are on this breaker. I didn't think they were. In fact, I have another breaker labeled by the builder as Bath GFI.

 

Thanks Angela.

 

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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Angela on APC forums on 2/2/2015


Hi Rudy,

I chatted with my colleague who knows a lot more about these things than I do. He said he could only think that the circuit was actually becoming overloaded. (We asked on the AFCI/GFCI because the UTS won't work well with those). The breaker could be too sensitive, though, I imagine you have other circuits with this same one/type. Breakers aren't also super-duper accurate either so do you think you could be close to overloading this circuit by chance? And also, frequent trips may have resulted in a weak connection since they are typically meant for tripping once and replacing.

BillP
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Re: UTS6H: One Circuit trips when going from Gen Power back to Utility Power

This reply was originally posted by Rudy on APC forums on 2/3/2015


Thanks Angela, I'll try a new breaker and report back.