Hook-up wire voltage rating question - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st August 2007, 03:41 PM   #1
diyAudio Member
 
luvdunhill's Avatar
 
Join Date: Jul 2006
Default Hook-up wire voltage rating question

I have a question about using a certain hook-up wire in two different conditions. The wire has the following properties: "The dielectric constant of XLPE is about 2.4. Insulation resistance is 10^5
M OHM*m MIN (DC125V, 20C). The rating of the cable is 30V, 60 C."

I was told that this is largely a UL deal, not necessarily the limit of the material itself. However, I was wondering if this would be okay to use in a power amplifier, like the Pass F4 where things get hot and in a tube amplifier when voltages are in the 600-1000V range? Is it safer to use something like a mil-spec kilo-volt rated wire in the second case? I understand the temperature ratings, but does the voltage rating just have to do with the dialetric of the casing?
  Reply With Quote
Old 21st August 2007, 04:34 PM   #2
mzzj is offline mzzj  Finland
diyAudio Member
 
Join Date: Jul 2005
Location: 65N 25E
XLPE as a insulator is used for anything up to 200kV so clearly its not a material issue.

Mostly its about quality control, ie one feet of your cable can _probably_ withstand 2000v short-term but there is no quarantee that your entire spool is up to same quality or if there is microscopic holes on insulation.

For tube amp I would use something better than 30v rated cable.
  Reply With Quote
Old 21st August 2007, 07:09 PM   #3
diyAudio Member
 
luvdunhill's Avatar
 
Join Date: Jul 2006
Quote:
Originally posted by mzzj
XLPE as a insulator is used for anything up to 200kV so clearly its not a material issue.

Mostly its about quality control, ie one feet of your cable can _probably_ withstand 2000v short-term but there is no quarantee that your entire spool is up to same quality or if there is microscopic holes on insulation.

For tube amp I would use something better than 30v rated cable.

what two runs never touched each other, or the case, etc.? So, does the voltage rating ultimately come down to what the insulation can hold? or what about adding another layer of teflon tubing?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Capacitor Voltage Rating Question Trout Tubes / Valves 11 5th June 2009 06:49 PM
Hook up wire? cjkpkg Tubes / Valves 12 23rd November 2008 11:55 AM
Blackgate N voltage rating question KT Parts 1 28th July 2005 12:05 AM
Whats the voltage rating on this wire? lgreen Parts 3 20th October 2004 09:08 PM
hook up wire question TubeHound Parts 2 18th November 2002 02:12 AM


New To Site? Need Help?

All times are GMT. The time now is 04:46 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2