Selecting Between a Three of Four Pole ATS

The choice between a three-pole or four-pole automatic transfer switch (ATS) depends on the grounding scheme for the system. To ensure you are specifying the correct type, it is important to understand how it affects the grounding of the system and the ground-fault protection for the emergency system. This white paper covers the criteria to be considered when selecting an ATS.

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Categories: KOHLER® White Papers
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