Question 247Electricity & Electronics - Assistant Engineer

The correct answer is B) The trip point should not be larger than 115% of the generator rating for a continuous rated machine. This is based on the requirements in 46 CFR Subchapter J, Section 111.12-1(b), which states that the longtime overcurrent trip setting for a generator circuit breaker should not exceed 115% of the generator's continuous rating. This ensures that the circuit breaker will trip before the generator is overloaded and potentially damaged. The other options are incorrect because A) and C) set the trip point too low, which could allow the generator to be overloaded, while D) sets the trip point too high, which may not provide adequate protection for the generator.