Grounding Question

@erik_squires

I don’t know where You got your Electricians license or your Electronics Eng Degree, but I took my training at USC! Now, I do admit that I did take my schooling a long time ago but US Electrical Code has changed very little and Electronics has not done anything other than to Improve on a theme. If that confuses you, Well, you can’t be any more confused than I am over your statement. You mixed metaphors so badly you were almost impossible to follow. Talking about 4 prong plugs. I hate to tell you I don’t know of ANY city in the US that uses a 4 prong plug for 110v circuits. SO your 220v and 440v discussion is irrelevant, at least for those of us in the USA. Then talking about a wooden case, HOW does that even enter into the argument. The standard for electrical plugs is the NEMA 1-15 plug.

Now I just did a continuity test on a 2 prong IEC C7 socket to chassis on my not too old SACD player and it OHMed out at near ‘0’! Similar on my computer chassis to motherboard. I will agree that on the computer, they have through the last 20 years played with isolating the motherboard from the chassis, but that is no longer the case. Also I am not saying that it the Neutral side of the IEC C7 plug is meant to function as a full on Ground, for overload purposes. There exists Two standards for the socket for the IEC C7 and one is reversible and the other is keyed for polarity. Even on my BRAND NEW NAD, the IEC 60320 plug doesn’t have an active ground pin so the 3 prong cord is not even active.
None of you statement seems to be germane to the conversation.

Thank You @erik_squires!
Finally, someone with a little snippet of Electronics Knowledge.
You just brought up one of my Pet Peeves. Just about every one of the Commerciale Power dist. box manufacturers will try to convince you that they can carry sufficient current for your equipment and yet they almost all exclusively use just a tiny copper trace on a circuit board to deliver all of the power.
On another point I agree that you should NEVER depend on your inner connects to carry the ground. Though most of the time the transients that they do carry can safely handle, it is definitely insufficient to carry a serious load. BUT Most equipment that doesn't haver a dedicated ground wire/pin do utilize the Neutral side of the power cord as a pseudo ground. There is lots of debate over how much is enough or too much grounding. You can go too far and actually create ground loops which will actually DESTROY your sound.