On a Distribution Transformer, the terminal pads have some paste or grease on them. Should this material be cleaned off before the lugs are installed?

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Issue:
Grease on Transformer terminal pads

Product Line:
LV Transformers

Environment:
Applies to Low Voltage Transformers by SquareD/Schneider Electric

Cause:
Corrosion on terminal pads

Resolution:

No. The material is a zinc oxide anti-corrosion compound. Leave it on when mounting lugs, terminals, compression fittings, etc.