|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: DEDICATED POWER LINES AND GROUNDING ... posted by sweepsa on April 21, 2000 at 10:01:27:
hi pal,you will be disappointed at your power lines you installed.
and you will need to isolate noisey equiptment off the rack
in the panel . switch the refrigerators and any florescent
light fixtures from the phase you use for the equiptment rack.
get rid of all mercury, florescent and high pressure sodium lights.
they are noise producers. have them removed and throw them away.
buy nice quiet regular good old fashioned incandescent lights. next
isolate the noise. not the rack. or do both with a hefty
uninteruptable power supply that has an isolation system in it.
they are expensive. and i have found only one company that has one.
that is your problem. not in grounds . nope not in the isolated
neutral. it is in the branch wiring you use. switch phases.
some other radical corrections i've tried follow:
i'm a local 22 union man from omaha. if you ground it wrong
we got some brothers who are in jail in new york for a 3-5 year
sentence for murder in the 3rd degree. they are electricians
who grounded a whirlpool wrong and killed some people. they went
to jail. period. so hire some one to do it for you.
i'm a local 22 union man from omaha. if you ground it wrongwe got some brothers who are in jail in new york for a 3-5 year
sentence for murder in the 3rd degree. they are electricians
who grounded a whirlpool wrong and killed some people. your allowed
one system ground and one rod. thatis it.but you can run many wires to the ground rod. this is called
isolated ground. and is very expensive but the best type of cure.
most peoples studios suffer from other problems though not grounds.
1.like bad neutral bonding to ground . or even more deadly in old
parts of the city is the floating neutral ,that has no ground at all,
and usually carries a full 100-120 volt charge on the ground plane.
so if you got a microphone in your hand and get a drink of water
at the same time ,bang, your dead. so be careful.
i was a recording studio owner and i did all these cures and finally
what worked was 2 massive transformers back to back with huge
caps to phase shift the power curve back on .cost $10000. but well
worth it. my juice was so clean it looked like con edison created
it just for me and i was there only customer. perfact sine wave.
i got a 220 volt dc generator and tried my own generation for a while
but diesel was expensive to run it.next i joined the live steam
folks to learn how to make my own power by steam driven generators.
free juice from my own trash. and my neighbors news papers. but
i'm whileing and remoniceing. these are the good old days today.
and those was the bad old days.
2. your not supposed to run those cute little surge protectors on the
audio equiptment. but you will see virtually all sound men do it.
and writers who do not know what they are doing will swear by them.
they go on at the problem of the noise source. like refrigerators for
instance. got to grey bar electric distribution and supply companybuy a single pop supressor for inline service.
you put a huge varistor at the frige . then you lift the frige off the
phase your using for sound to isolate the noise. do it the panel not
in your rack , then in order for itto contaminate your audio the pop must go out thru the transformer
and back down the other leg. this is allmost impossible for this to
happen . but in my area we had a huge quantity of manufacturers.
so it was like "pop bang whizz" all the time. finally a big u.p.s. was
in order which i got from exide . it was $2000 with massive truck
battories in it to run it for hours. the reason was if you shut off
the system with 2 transformers back to back you will get a huge spike
from the very isolation transformer that is cleaning up your
electrical service. it is called counter emf.
all of this is extremely expensive. but if your a tinkerer
about a year ago popular electronics or electronics now ran an
article about how to modify two identical flyback transformers
into isolation transformers. still it will have a huge field counter
emf which can blow out the amps and smoke your rack if a power
drop occurrs on the grid . there you got $50,000 worth of free
electrical engineering how to. that is what it cost me to learn and do
all this for my studio when all the bills was paid.
oooooffff huh . steep numbers.
by now.
craig
drop me an email some time and let me know how it turns out.
and you really don't need all this much protection. i did this
because it is job to know this information.it was a personal thing
i had to conquor.
if i don't i'm out of bussiness. but of this i can design a system
for pixar or paramount that would make old george lucas smile
with pride it would be so clean. i'm working on the auto detect
save as feature so if the ups goes on line then the computer auto
saves my work at one miniute intervals now.
i'm told they have these but who links the ups to 3d studio max
and cad/cam systems. so if the battories run dry i'm covered.
so at worse case senario you will need your local power company
to install a new transformer that is grounded. or do it
your self with a ground bond. be careful as you hook it up.
i was in a building one time that had four grounds on a metal
building for gods sake. everything was hot. if you got a drink
of water you got a shock, if you went pee in the bath you got a
shock. check this first also.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: DEDICATED POWER LINES AND GROUNDING (illegal and in jail) - craig 19:22:12 04/21/00 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
