 clarkjohnsen wrote: | | It does not take care of itself (what does?) and following the code doesn't get you there either…. Indeed, it is current leakage... but measured by the difference in potential. |
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Clark, you a bit simplistic understand the the notion of AC polarity.
CJ: Good to know.
If you have one individual component in audio system then the AC polarity is matter and you can get it by measure the potential between one neutral and ground and then compare it with reversal connection. However if you have 3, 35 or 135 AC power-using components in system then the AC polarity of individual component need to be set in the same way.
CJ: So far, so good.
If all components are made by the electrical code (and in 99.99% of cases they are) then you will not have situation that one component AC polarity screw another.
CJ: This is where you veer off course. The AC polarity under discussion (anyway by myself) does not concern code -- that is, the hot/neutral/ground alignment. Instead it's an internal aspect, not under the control of any code or convention.
I NEVER saw a production component that has reversed AC polarity.
CJ: Then you haven't looked close enough.
I hear that some of them do but I never saw it myself.
CJ: Generally speaking, half of them do -- minus those that exhibit no such measurable characteristic at all.
From what I saw your current leakage always was smaller in the side that complied with code.
CJ: Internally, again, no code applies. Take the power transformer's secondary leads: what convention instructs a manufacturer which side to use as hot? None!
If you begin to flip individual component then the question that you face: do you need to measure the components individual or in assembly into the system. In non symmetrical systems there is no true answer to it.
CJ: All explained in The Wood Effect, and other places.
c
The Cat |
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