Red Faultry Building Wiring Light on BE650G 1

[SLR1]

Have a BE659G 1 purchased for power backup for my electric recliner as we have occasional power outages and I didn't want to be stuck in chair if one occurred. The unit has tripped the breaker many several times and I noticed that the red "Faulty Building Wiring" is on and never goes off.  What is this trying to tell me other than that the breaker is thrown?

Obviously I know absolutely nothing about Electrical  operations in this kind of stuff. Any help available will be helpful!

[Teken]

Based only on the information you have provided there are a few assumptions and possibilities. 

I have appended the user manual for your specific APC UPS model which calls out what the Building Wiring Fault LED means:

https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=SCON-89HM7B_R1_EN.p...

If you just purchased this unit as you said and it’s tripping the breaker please contact APC Technical Support to initiate an RMA.

Depending upon what type of breaker is present such as a standard, AFCI, GFCI, Combo AFCI / GFCI the possibility are these:

Standard Breaker: Over load or high current draw exceeding the 80% duty cycle which is causing the breaker to trip.

AFCI: The breaker is detecting an electrical arc in the wiring or a false positive.

GFCI: The breaker has detected more than 5 mA imbalance between the hot & neutral wires. This can also be a false positive or nuisance trip. 

Combo AFCI / GFCI: Same as above examples.

If we ignore all the above and assume the UPS is fine. More often than not the circuit is simply over loaded and thus tripping the breaker.

Verify all connected loads on the branch circuit and more than likely that is the root cause.

In other cases you will find a UPS will trip a AFCI / GFCI breaker (nuisance trip). Because they leak a small amount of current due to their design as seen in this APC Resource Link:

https://www.apc.com/us/en/faqs/FA158850/

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