Engine: Electricity

1. A Step up the voltage from the 450 VAC main bus to the voltage required for the refrigerated container feeder bus.
2. B Reduce the kVA loading on the 450 VAC main distribution system main switchboard.
3. C Step down the voltage from the 450 VAC main bus to the voltage required for the refrigerated container feeder bus.
4. D Prevent any unintentional grounds in the refrigerated container distribution system from affecting the 450 VAC main distribution system.

Tip: press A-D to answer