Electrical Myth
While searching through the forums recently, I came across two posts in which an old electrical myth is repeated- "Circuit breakers will trip at 80% of their rating." For any breaker which has not deg...
Forum Discussion
Salvo wrote:
I sure did read them. Perhaps you didn't? All the curves go vertical at the rated current.
It's just that the first curve's time is shortened before the curve goes "vertical". It's an incomplete curve because the author wanted to emphasize high-current and short duration breaker triggers. Don't let that fool you!
Sal
You're right however I needed to reread my own post before replying to you. I didnt have an issue with the 100% mark, just the absoluteness of it. they may blow at 100% or at some value higher than that. It's reason for the banded area, variability.
