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Will the QO GFI or HOM GFI breaker work on a ungrounded delta system?

Issue:
Do the QO-GFI and HOM-GFI breakers work on ungrounded delta system?

Product Line:
Miniature Circuit Breaker

Environment:
HOM and QO Circuit Breaker

Resolution:
No, they require a solidly grounded 120/240 voltage system.
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