What does the term 'ATO' stand for?

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Multiple Choice

What does the term 'ATO' stand for?

Explanation:
Automatic throw-over is a term used for switching a load from one source to another automatically to maintain service when the primary path fails or is taken out of service. In practical terms, an ATO scheme senses abnormal conditions and moves the load to a backup source without human intervention, which is why this interpretation fits best. The other options relate to manufacturing terms or describe a protective relay type, which aren’t what ATO stands for in this context.

Automatic throw-over is a term used for switching a load from one source to another automatically to maintain service when the primary path fails or is taken out of service. In practical terms, an ATO scheme senses abnormal conditions and moves the load to a backup source without human intervention, which is why this interpretation fits best. The other options relate to manufacturing terms or describe a protective relay type, which aren’t what ATO stands for in this context.

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