According to 46 CFR, Subchapter J (Electrical Engineering), which statement is true concerning a circuit breaker located in the machinery space and installed in a 440V AC distribution system?

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Accepted Answer

It must have an interrupting rating sufficient to interrupt the maximum asymmetrical short-circuit current available at the point of application.

Answer

It can be dependent upon mechanical cooling to operate within its rating.

Answer

It can have a long-time delay trip element set above the continuous current rating of the trip element or the circuit breaker frame.

Answer

It must have an ambient temperature rating of 40 degrees C.

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