What size primary fuses (Class E type) are needed for a 1500kva, 4160v to 277/480v Liquid Filled Transformer? The fuses are for an HVL ahead of the transformer.

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Issue:
What is the size of the primary fuse required for a 1500 KVA, 4160V to 277/480V liquid filled medium voltage transformer?

Product Line:
Medium voltage transformer

Environment:
Installation/specification

Resolution:
A 250E fuse will be required.