|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
103.3.233.57
In Reply to: RE: Well from a safety POV posted by Cpk on June 21, 2014 at 15:32:03
Thanks for your concern. I am well aware of the cold flow characteristics of teflon. This is one reason why there the teflon insulated wire is then covered with a cotton sheath. The cotton provides a cushion layer to prevent the kind of forces that cause cold flow (as you may know, cold flow in teflon only occurs under certain circumstances).
But also there are very few instances of teflon cold flow causing actual problems. The types of issues that I've read about concern situations where teflon wires had been stapled to something, and over time the pressure on the staple caused cold flow and a subsequent short. The solution was to add some padding.
If it's not possible to get Teflon insulated UL wire, why can I find many many hits when Googling "Telfon Wire UL rated" One example is
http://www.specialtycable.com/ptfe_hookup_wire.html
The cotton sheath also has sonic benefits.
Second point : well firstly, I didn't make this point. But there's a lot more than simple 60Hz going on down the power line. The load that components put on a line is complex. It consists of bursts of power draw, 120 times a second, when the rectifier is switched on, and in-between these pulses there is virtually no current drawn. The sudden turn on and off of the regulator causes harmonics much higher than 60Hz. What's more, this mess is somewhat modulated (not really the right word) by the music, with the pulses being wider when the music is loud.
A more interesting question in my mind is "Why do power cords make so much difference"
Follow Ups:
cotton provides a cushion layer to prevent the kind of forces that cause cold flow
Nope
Hookup wire and being rated as a external power cord are two different things.
there's a lot more than simple 60Hz going on down the power line
there certainly is
"Nope" - you opinion, which I reject. Cold flow in teflon doesn't just happen, it's the result of stress, and in particular the problems that actually occur are caused by localized stress.
"there certainly is" - just a moment - you originally stated the opposite and now you're agreeing with me?
I always enjoy folks writing about stuff and they really just read about it someplace. With no understanding.
I agree Teflon is really great, and safe. the problems are specific, and can be mitigated. Like you state.
I've never ever built a cord with Teflon then looked at where is was clamped and saw evidence of flow, nope never...
Edits: 06/22/14 06/22/14
Z
.
In 10 years, they're going to give me a brush. %^p
********************************
Could we stop this cycle, please?
It's a no-win situation.
axolotl
you opinion, which I reject.
good for you, might not be for somebodies house though...
you originally stated the opposite and now you're agreeing with me?
your reading comprehension is poor
Well I can see why you might want to diss my offering. It's not like you're an uninterested observer, right?
But there are many power cords that use fluropolymer insulation, including the highly rated VH Audio cables that someone posted a picture of. So I'm assuming that your safety comments apply to all of these? It's not like you have actually examined one of my cables and know exactly what you are talking about, right? I haven't heard any stories of teflon power cords causing fires. Have you?
As I posted originally using the 'thinnest possible amount of teflon' is a hazard when dealing with ac coming out of the wall. You are assuming that all your customer realize handling precautions and that you are not going to have any unforeseen situations. That's a big assumption. I've been at clients houses where things are in a disarray and a powercord is caught under edge of an amp, I've had another customer show me a cable from a company that was supposed to be indestructible he'd snapped in half. Things happen...
The moderators feel that allowing this thread to continue, even though it may hold useful information, will wind up creating more trouble than it solves, and thereby detract from the purpose of this forum.This is not the appropriate venue for discussion of this matter, and we ask that those with an interest in the subject, take it elsewhere (e.g. private e-mail).
No further follow-ups will be considered.
Thank you for your support of the Asylum.
This post is made possible by the generous support of people like you and our sponsors: