Circuit Breaker Trip Ratings

John Noffke 121018OGR Forum Member

Good Day Everyone,

I know this topic comes up quite a bit here and I thank folks for posting on it again. I am rebuilding my layout and am going to add thermal 10 amp circuit breakers between my MTH Z4000 and my bus lines of 16 AWG wire. Most of the breakers I have found will trip after 1 hour at 150% of the load. They will break within in a few seconds only after it reaches close to 200% of the load. I am reading this to mean 20 amps and the breaker trips fast. Less than that, and it will take time.

My question is this rating okay given my wire gage and power system? Do I want to search for something that trips faster?

Thanks for the feedback!

1/15/1910:50 PM

Original Post

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