SV: Re: SV: Re: [sdiy] midi optocouplers

[harrybissell]

USA uses 120VAC...

Hot will have 120V AC with respect to earth ground

Neutral should have no voltage with respect to earth ground.

They can get reversed sometimes... with disasterous results in
an audio system.  Having one chassis at 'hot' and another at
neutral can mean line voltage in an audio cable...

H^) harry

Karl Ekdahl wrote:

> I'd really like to know what the "hot"/"neutral" is all about, here in
> sweden we've got no such thing but i'm moving to the US in a week so
> i'd better learn....
>
> Karl
>
> Samppa Tolvanen <samppa.tolvanen at gmail.com> skrev:
>
>       We Finns are enjoying 230VAC with non-polarized mains
>      sockets.
>
>      Shouldn't We all agree the truth, there's NO neutral wire.
>      Just for newbies?
>
>      Grant said:
>      "It is a good idea to verify that your electronic music
>      studio wall
>      sockets are wired correctly.
>      I have seen strange things happen when neutral and hot are
>      reversed.
>      Even on transformer isolated equipment."
>
>      This sounds like badly designed equipment.
>
>      Samppa
>
>