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.
Several characteristics of SF6 circuit breakers can explain their success: 1  Simplicity of the interrupting chamber which does not need an auxiliary breaking chamber. 2  Autonomy provided by the puffer technique. 3  The possibility to obtain the highest performance, up to 63 kA, with a reduced number of interrupting chambers.