genme
Ok - there is a little red button with wording that says "Push to Trip" on the service utility breaker on our service rated transfer switch (0H7265B). I see no information in the manual about this button. Is this breaker a GFCI or something else?
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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hoghead
It is a trip test for the main breaker
When u push it ,it will trip the breaker
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genme
Thanks. Standard breakers (that I am familiar with) don't have this feature. Can anyone speculate as to why Generac has this feature?
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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ceb58
So you can get your post count up.:D
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genme
ceb58;10290 wrote:
So you can get your post count up.:D


:D

Skip, feel free to subtract 1 from my and ceb's post count. :D
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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Dave_eng
Let me preface my remarks by saying I am a Mechanical Engineer with general knowledge of electrical things derived from years working in facilities management. There are many on this forum with far more detailed electrical knowledge than I have!

A circuit breaker like the ones in your home require you to move a lever to shut down the power for an individual circuit. On larger breakers, say on a 200 amp main breaker for an entire home, the effort to move the lever, is quite high. Further, you have to go to the breaker in order to cause it to shut down, To provide more flexibility in where a breaker can be activated and to reduce the effort required to activate it, a special breaker is often used. It is caused a "Shunt Trip" breaker. It works just like a normal circuit breaker with one additional function. A shunt-trip breaker also has a built-in magnetic coil that can be energized externally to trip the breaker.

If you took any shop classes in high school you likely saw shut trip breakers in use. Big red buttons called "emergency stop" located in many locations around the room for the teacher to use if something bad was starting to happen.

I cannot comment specifically on the particular red button but perhaps it is to make it easy to trip the breaker for a variety of reasons.

Hope this info is helpful.

Dave p
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