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Servicing of Double-Insulated Products
In a double-insulated product, 2 systems of insulation are provided instead of grounding. On a double-
insulated product, grounding means is not provided and should not be added. Servicing a double-insulated
product requires extreme care and knowledge of the system, and is to be done only by qualified service
personnel. Replacement parts for a double-insulated product must be identical to the parts they replace. A
double-insulated product is marked with the words "DOUBLE INSULATION" or "DOUBLE INSULATED". The
symbol (square within a square)
may also be marked on the product.
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