[R-390] A different GFCI option

[Tim Shoppa]

Gary Gitzen wrote:

>A third, as yet unmentioned, solution exists; one
> gaining popularity with the professional audio crowd.
> [Please note "Professional Audio" vs "Audiophools".]
> This third option is to differentially feed the
> 120VAC line as two out of phase 60VAC legs, just like a
> 240VAC line is two out of phase (differentially fed)
> 120VAC lines.
> Each 60VAC leg is derived from a center tapped
> isolation transformer, with the center tap connected to
> green wire ground.

I would like to point out that many shipboard electrical installations
result in exactly what Gary's scheme yields. Shipboard I believe
that the center tap is usually made at the generator and not at the
load.

The shipboard scheme (max 60VAC to ground) always seemed safer
to me although I am completely unqualified in making safety
judgements.

Tim.