In Reply to: How to Spec a Dedicated AC Line? posted by Omera_T on April 2, 2007 at 04:49:46:
Hi
Don’t fool with power systems unless you know exactly what and why about what you’re attempting.
Here is a link to one article that goes into what is involved.http://www.middleatlantic.com/pdf/PowerWhitePaper3_07.pdf
Essentially all of the problems associated with wall outlet power noise and unbalance, that sometimes are even real, can be squashed with an isolation transformer.
Many of these transformers have low pass filtering and spike suppression, some, the kind called resonant transformers (like Sola makes) regulate the voltage and put out a constant Voltage sine wave too even with a distorted input. These devices do tend to make airborne noise so they should be located in another room, not in the listening room..
Large computer systems used to be real sensitive to power supply variations, the best place to look would be for a power isolator that was removed from service.For example, here is a 500 Watt unit that is on e-bay.
http://cgi.ebay.com/SOLA-POWER-LINE-CONDITIONER-500-VA-63-23-150-8-NIB_W0QQitemZ320096243423QQcategoryZ42881QQrdZ1QQcmdZViewItemAnd a 2KW unit
http://cgi.ebay.com/SOLA-POWER-LINE-CONDITIONER-500-VA-63-23-150-8-NIB_W0QQitemZ320096243423QQcategoryZ42881QQrdZ1QQcmdZViewItemUnderstand, these ARE NOT a UPS supply, they just regulate / isolate and clean up house AC for sensitive electronic equipment.
Skip the exotic wire unless you already have it, it makes no electrical difference at 60Hz. Use conduit or armoredflex cable (BX around here).
Best,Tom
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Follow Ups
- Re: How to Spec a Dedicated AC Line? - tomservo 07:16:19 04/02/07 (23)
- How much we know about isolation transformers ? - cheap-Jack 09:31:57 04/04/07 (0)
- Ferroresonant transformer is not good for audio - Jon Risch 21:01:07 04/02/07 (4)
- Re: Ferroresonant transformer is not good for audio - rcanova 12:10:27 04/03/07 (0)
- Glad you can tell not all powerline transformers sound good. (nt) - cheap-Jack 11:48:51 04/03/07 (0)
- Re: Ferroresonant transformer is not good for audio - tomservo 08:16:40 04/03/07 (1)
- Re: Ferroresonant transformer is not good for audio - Omera_T 04:18:19 04/05/07 (0)
- Who is fooling whom ? Stick to the topic, pls. - cheap-Jack 09:18:39 04/02/07 (16)
- Re: Who is fooling whom ? Stick to the topic, pls. - tomservo 11:11:48 04/02/07 (0)
- Tom always sticks to the topic - Russ57 10:48:36 04/02/07 (14)
- The topic is about dedicated powerlines not transformers. - cheap-Jack 12:03:59 04/02/07 (13)
- Likewise, you'll be a"wiser" "ass" to stay away. (nt). - cheap-Jack 12:22:48 04/02/07 (9)
- Hold on here, are you calling me an ass Jack? - Russ57 14:46:59 04/02/07 (2)
- You make your points. - cheap-Jack 18:53:31 04/02/07 (0)
- Take it easy. The post was intended for Cliff but was misplaced. - cheap-Jack 18:15:41 04/02/07 (0)
- Is that some kind of threat?? Are you the thread police, or what? - clifff 13:17:16 04/02/07 (5)
- Thou shalt not awe. Amen. - cheap-Jack 13:30:38 04/02/07 (4)
- Listening is believing. Right. So if people (like you) hear ghosts, then ghosts must be real and believable (nt) - AJinFLA 14:22:28 04/02/07 (2)
- Did I hear some ghosts' murmuring ? (nt) - cheap-Jack 09:35:58 04/03/07 (1)
- Yes you did. It's coming from your stereo. But don't bother measuring, won't show up. Cuz it's all inside your head (nt) - AJinFLA 17:03:45 04/03/07 (0)
- What on earth does that mean? - clifff 13:41:28 04/02/07 (0)
- I wiser man would check on who he is debating with before making an even bigger ass of himself. nt - clifff 12:15:46 04/02/07 (2)
- BTW, an English "ass" is related to a donkey ... - clifff 13:46:06 04/02/07 (1)
- Here in the West, "ass" can mean something else. (nt) - cheap-Jack 13:52:44 04/02/07 (0)