Practice question

What is the purpose of the BBS automatic transfer switch (ATS)?

  1. Switch the cabinet load from utility AC to the BBS inverter output when utility power fails or goes out of range
  2. Disconnect the MMU during flash
  3. Adjust offset
  4. Test individual load switches

Answer: A — Switch the cabinet load from utility AC to the BBS inverter output when utility power fails or goes out of range

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