Electrical · E-5E8GK

Typical Transformer Grounding Detail

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A typical dry type transformer with a 480V delta primary and 208Y/120V secondary is housed within an enclosure. Line side conductors connect to terminals L1, L2, and L3, while load side conductors tie into terminals 0A, 0B, and 0C. An equipment grounding conductor runs from the line side to the enclosure, and an equipment bonding jumper matches the size of the system bonding jumper. The XO secondary terminal connects via a system bonding jumper and routes to a grounding electrode conductor sized per sheet E7.10.

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