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A GFCI is the best protection against shock you can reasonably put on a 120V mains circuit, grounded or not. Surge suppressors absorb surge energy as well as attempting to divert some of it back to the source—even without a ground, they can function just fine. The mains ground is ineffective at RF as it is long enough to be highly inductive (or even a ...


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Points one and two, I can't make a definitive answer but generally when a ground is not provided a GFCI provides acceptable protection. As for point 3, grounding issues is a major source of noise/static. If the item is not grounded the metal case around the device will be very ineffective in shielding the device from EM interference. Likewise, any EM ...



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