Engine: Electricity

1. A Power and lighting batteries must be of the lead-acid type only.
2. B When power ventilation is required, the ventilation may be accomplished by a ventilation system that serves other spaces.
3. C When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent simultaneous operation.
4. D When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent charger operation unless the ventilation fan is running.

Tip: press A-D to answer