[sdiy] Studio Electrical Wiring Questions

[harry]

Americans are on a power trip... what more can I say ???  ;^P

There may be some differences between USA with 120VAC 'hot'
and 'neutral'.... and your 220VAC with essentially 'hot' and 'hot'.

Your hot lines will essentially phase cancel... our hot and neutral will
not.  That's the 'balanced power' idea... yours is built in.

I see the advantages to the isolation transformer being...
1) isolation
2) separate ground with no chance that another (non studio) load will
disturb it
3) rejection of capacitive coupling (if you have a faraday shield in the
transformer)
4) maybe... just maybe... some AC hum reduction from balanced
power.

I don't think you will notice the balanced power if your system is
clean to start with (no ground loops, proper routing...)

But hey it was a nice experiment for $200

I bought the transformer from Powertronix (now I recall...)

H^) harry

Theo wrote:

> ??? Funny guys these Americans.
> You won't need 100A for you studio don't you?
> Or do you use 6000W class A amps for monitoring?
> If you want a clean group for you studio you, why not just add a new group?
> Basically this means to add a circuit breaker and "ground leakage" switch.
>
> I found that separate groups for gear and light pays off for noise
> reduction,
> then again I had a lot of dirty light to handle (dimmer packs).
> Connecting all your gear to _one_ outlet may be a good place to start.
> This gives you a star connection for your power lines.
> Just make sure you don't run audio and power in parallel, otherwise it won't
> bring you much.
>
> If you really wana go high end you may consider a isolation transformer with
> ground connection, and power you gear from balanced AC.
> But IMHO this is more a option for gold ears.., wait, I have special power
> cord mounting clamps for you, only $5000 per 10, a real bargain ;^)
>
> Theo
>
> > <snippd>
> >
> > BrightBoy wrote:
> >
> > > A friend of mine recommended that I have a second 100Amp service brought
> > > to the house which would strictly power the studio with it's own
> > > seperate
> > > isolated ground (attached to a seperate grounding rod).  This would
> > > involve
> > > adding a 2nd power meter, breaker panel, etc.
> > >
> > > Is this really worthwhile or not????