(Same user as Ryan P.)
I skipped out on the transformer days in college. I think its worth mentioning that all work I have done has been in semiconductors, which is where the 'kind of' comes from.
I would never worry about 110v, even when sweaty. Those EMS work out machines can often get up that high. Plus there's no way you will get a full wave of voltage. Most earth grounds are centertaps, right? Well, there are some that aren't. Like in the case of what killed my equipment.
Aren't there designs where the chassis as well as some circuitry is tied to earth ground? I've known many people getting zapped by EMF shielding in earth groundless houses. Including by a Fender amp, a pretty professional company. Are these designs not UL compliant?
And we didn't wire our lab, we aren't allowed to build them ourselves. What happened was the tweeker union guys didn't even hook up half the f$ck!ng earth grounds. And didn't check them either. We opened up all the benches and they didn't even try to wire them. So we had one BNC cable going from a function generator (which I assume was hooked to a working ground) to the expensive equipment which was hooked to a bad one. Now that I think about it though this situation doesn't apply to Taiwan because these grounds were in two's so one equipments center tapped ground was getting pulled by anothers ground which probably wasn't center tapped. Its like the two were connected but not connected to earth ground.
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RF grounding and electrical grounding are two different things. You can have a very nice RF grounding and still receive electrical shocks - and vice versa.
You're taking me a bit out of context, what I am saying is if the earth grounded shielding is around RF sensitive circuitry and the floating ground allows voltage fluctuations on the shielding you will get noise.