Evan's Space

Wonders of Physics

Double Insulation symbol on a hair dryer

2 Comments

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The double square symbol represents double insulation. This means that the electrical appliance (a hair dryer in this case) has double layers of insulation. Besides the rubber tubing which cover the wires, the other casing is made of electrical insulator (plastic in this case). This protects the user in the event if the wires become loose and touch the casing. The casing will not become ‘live’.

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2 thoughts on “Double Insulation symbol on a hair dryer

  1. looking everywhere for a double insulated blow dryer – what brand/product is that one there?

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