Help with Equitech 1.5Q power conditioner

BTW, the output of a balanced power conditioner is not dissimilar from the 220V outlets your big appliances (range, dryer, HVAC, etc.) use.

It’s still not one +120 and one -120 V line. It’s two lines from the same transformer winding that run in opposite polarity. It is impossible to measure +120VAC. You can’t tell one from the other. The only thing you can do is measure the delta between them, which in this case would be 220VAC.

I’ve often wondered, along the same lines if the ideal situation wasn’t actually to run 220VAC to an audio room and use a combined step down and balanced output conditioner. Balanced power to balanced power essentially.

While I don't want to encourage anyone to poke around in a 220V outlet, I really don't!  I can say categorically that if you took the most advanced multimeter on earth to your dryer's 4 prong outlet you can identify 2 hot lines, but cannot identify one as being + and the other - based on the meter's readings.  Impossible.  You could at best identify 2 lines which are either  ground or neutral, and 2 lines which are energized. 

So, essentially the outlets on the back of the Equitech are wired the same way as old 240V appliances, the kind that had 3-wire cords. Correct? How does it handle floating-ground loads? I’m a bit confused

So, essentially the outlets on the back of the Equitech are wired the same way as old 240V appliances, the kind that had 3-wire cords. Correct?

That seems close, but the house N is not grounded through the Equitech. Or at least should not be. Ye olde (pre 1990s?) dryer DID bond N and ground internally to the dryer. There’s no reason to do that with a balanced conditioner... but I don’t speak for the manufacturers. Who knows what crazy things they do.

The secondary winding on these isolated devices is split. The center of the two coils is bonded to ground, so the outside ends of the 2 coils are each equal and opposite 60VAC.

And herein is a problem which the founder of Jensen transformers wrote about ages ago, that there’s still the possibility for a ground loop. Ooops.

Anyway, what floating ground load?