Danny D. wrote:

If I gave you a 40 amp circuit breaker and it kept switching at
34 amps, you'd not be so cavalier about the huge difference.

Bad example! Have you looked at the tolerance on the trip current of
a circuit breaker? It may not trip below 40 amps but don't expect it
to trip at 41 amps, not for a very, very long time anyway!

--
Chris Green
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