I ordered a new 250dx and need to know about breaker size.About the highest I will run the machine is 250amps@68En.I figure the draw will be about the same as 270 balanced or so. If I run a 100amp breaker will the machine kick off first?Or will the breaker trip in panel box.I obviously want machine to trip first,leaving fan on.My present wire is #6 TEC armoured cable which I feel will run the 100amp Ok,but if I need a 125amp breaker I will run a bigger cable.Anyone have any experience on this?

Thanks