Question 424Electricity & Electronics - Assistant Engineer

The correct answer is C. According to 46 CFR Subchapter J, when power ventilation is required for battery installations, the ventilation system must have blower blades that are non-sparking, and the system must be interlocked with the battery charger to prevent charger operation unless the ventilation fan is running. This ensures that the battery compartment is properly ventilated to prevent the buildup of explosive hydrogen gas. The other options are incorrect because: A) allowing the ventilation to serve other spaces may not provide adequate ventilation for the battery compartment; B) the regulation requires the ventilation system to be interlocked with the charger, not just the charger and ventilation system to operate simultaneously; and D) the regulation does not specify that only lead-acid batteries are allowed.