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Is the 24Vdc power supply for Micrologic Trip Units supposed to be grounded or ungrounded?

Issue:
Does it matter whether the 24Vdc power supply for Micrologic Trip Units is grounded or ungrounded?

Product Line:
Micrologic Trip Units

Environment:
Applies to Micrologic 2.0A, 3.0A, 5.0A, 5.0P, 6.0P, 5.0H and 6.0H Trip Units, Document 48041-084-01

Resolution:
The attached document 48041-084-01 is included in the carton with the Micrologic Trip Units. On the second page, it states that the 24Vdc power must not be grounded.
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