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Zigzag Neutral Bushing Name

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yesterlectric

Senior Member
Location
PA
Occupation
Electrician
I’ve only installed a couple grounding transformers and it’s been a while. For a medium voltage zigzag grounding transformer, what is the proper name for the center point/neutral? Is it XO or HO? Reason to wonder is primary vs secondary isn’t the same as a more common transformer.
 
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