Need suggestion for 125A bolt on circuit breaker

[Mgraw]

I've got them from the factory with type NGB 125amp breakers installed in the regular slots.

Yes the NGB will "fit" in the slot but you would need to purchase the NGB mounting kit and replace the breaker across from it with a NGB type. When I did that a couple years ago the cost for two breakers and the mounting kit was about $4000.

 

[ron]

Trust me I've considered running on the 100A considering that some of my measured values add up to 93A (new motor included, but measured on a separate circuit). The FLA adds up to 113A.

Some motors will run below nameplate if they are mechanically running on a lower part of the horsepower curve. Maybe the actual current drawn will be less?

 

[kwired]

Some motors will run below nameplate if they are mechanically running on a lower part of the horsepower curve. Maybe the actual current drawn will be less?

Very true fact, NEC thinks they all should be supplied with components based on full load though, but there also is no minimum setting for short circuit/ ground fault protection for general use applications, if this were something critical like a fire pump that would be a different ballgame.

 

[Nefarious Mind]

QJ2 200A breaker installed

QJ2 200A breaker installed

Ended up installing a QJ2 200A breaker and new mounting kit/faceplate. It ended up being the cheapest and easiest solution. The whole thing cost about $400 with some surplus and new parts. Thanks for the suggestions.