Arc protection circuit breaker tripping ?
 
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kengineer
(@kengineer)
Eminent Member
Arc protection circuit breaker tripping ?

I was wondering if anyone has run their printer on an arc protection circuit breaker?

My printer will trip this style of breaker within half an hour of running.

It works fine other than that, does not trip a low amp regular breaker or exhibit any issues, I love the thing, I feed it files, it makes them solid, just not on an arc protected circuit.

Opublikowany : 03/11/2017 6:43 pm
yuggniiks
(@yuggniiks)
New Member
Re: Arc protection circuit breaker tripping ?

This is also happening for me. I'm in the U.S., and had to install a combo Arc/Ground Fault breaker for the room I have the printer. Sometimes it trips the breaker within 20min other times I have a successful 8hr print. It is not consistent. Very annoying though. I've contacted prusa support a few times and they are unaware of the issue.

Opublikowany : 02/01/2018 5:07 pm
phil_d
(@phil_d)
Active Member
Re: Arc protection circuit breaker tripping ?

Any electric motor can trip an arc fault circuit interrupter (AFCI). This has been an issue since their inception and is why AFCIs aren't installed on appliance circuits. Vacuum cleaners, treadmills, even microwave ovens are known to trip them. AFCIs are intended to protect against electrical fires by detecting hazardous arcs. They are overcurrent protection devices and they trip, i.e. open the circuit, when the current remains at or above a threshold value for a set period of time.
Of course, the simplest solution here would be to plug into a different circuit without AFCI or GFCI protection.
But here's some more info in case you wanted to delve deeper into this issue:
There are three types of AFCIs, and they differ in which types of faults they are able to detect. Without going into unnecessary detail, Branch/Feeder types detect the fewest types of arc faults, Combination breaker AFCI detects more, and Breaker AFCI and GFCI detects the most types of arc faults.

The AFCI/GFCI breakers are much more sensitive than the other two types because GFCIs trip at a much lower current threshold, so if combination breakers are not required, you may try swapping for one of the other types of AFCI breakers. Naturally, anything you do to decrease the sensitivity of your AFCI takes away from the protection that they afford you.

Opublikowany : 02/01/2018 7:58 pm
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