New QO DF breakers

[oakselectric]

Have just installed new QO DF breakers in two new houses serviced by two different power companys first house has had problems since day 1 all DF breakers are tripped when home owner gets home from work this has happened about 8 times in the last 7 months ,sometimes 2 or three days in a row 2nd house has not had a problem since start up 5 months ago, any help or suggestions would be a great help Thanks

 

[ptonsparky]

Have just installed new QO DF breakers in two new houses serviced by two different power companys first house has had problems since day 1 all DF breakers are tripped when home owner gets home from work this has happened about 8 times in the last 7 months ,sometimes 2 or three days in a row 2nd house has not had a problem since start up 5 months ago, any help or suggestions would be a great help Thanks

I am not familiar with QOs but many others have diagnostics on board. You should be able to recover the codes.

 

[brantmacga]

What are your voltages? I had an issue awhile back where the poco sent 130/260 to the building and was tripping every GFI. Once they got the voltage down everything worked as it should.


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[ActionDave]

Temporarily swap them out with straight GFCI breakers to see if you have any wiring errors. After that talk to your supply house or SQ D. They will give you a new breaker. The manufactures are using the NEC to force the public to do their beta testing so don't be shy about asking for the newest one as many times as it takes to get the tripping to stop.

Below is an excerpt from an article in May issue of Electrical Contractor magazine and a link to the entire article.

http://www.ecmag.com/section/safety/fire-fighters-arc-safety-bends-toward-afcis

“You do as much testing as you possibly can, but as soon as you put it out in the field, there are going to be surprises,” she said.


Bryant said AFCI manufacturers now regularly re-evaluate their devices’ performance against new-to-market electrical and electronic products.


“We’ve done is we’ve purchased these devices,” she said. “If we deem them safe, then we’re able to ignore some of those algorithms. Ultimately, this is a safety device. If it’s tripping and your power’s going out, it’s going to drive you crazy. Our job is to try to make it work to the best of its ability in the field. It’s a fine line.”