8. Add the distance of your answer to the position of the first mark and make the second mark. In this case, 6 inches plus another 6 inches places the second mark at 12 inches.
Breaking capacity or interrupting rating is the current that a fuse, circuit breaker, or other electrical apparatus is able to interrupt without being destroyed or causing an electric arc with unacceptable duration.reaking capacity current corresponds to a voltage, so an electrical apparatus may have more than one breaking capacity current, according to the voltage.
For the purposes of selecting the interrupting rating of a circuit breaker, one should only concern oneself with the rms symmetrical current rating of the system, along with the system %pf or X/R ratio and the circuit breaker interrupting rating.