A word of history on Class I vs. Class II, as I understand it.
In the beginning there was no such thing as earth grounding in
homes and offices for the needed electrical appliances. The
equivalent of our present double insulation was required to prevent
against electric shock.
When structures began to include earth grounded outlets, this
method of protection required only basic insulation, i.e. cheaper
for the average appliance cost of materials, hence a rapid use
of Class I designs.
However, given what I know about each, I prefer Class II devices
for home appliances and tools, as there is no dependence on the
ground path, which may be compromised in the device, the cord,
extension cords, house wiring, and so on.
Just my personal opinion.................
George Alspaugh
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