The Black & Decker outdoor products are double insulated and because of this the unit does not require a third prong for grounding. Double insulation is an insulation system to protect the user from electric shock. Double insulation is comprised of basic insulation, which provides the first layer of protection, and supplementary insulation, which provides protection in the event that the basic insulation fails.
Why doesn't my Black & Decker corded outdoor product have a third prong for grounding?
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