Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

wire diametere and current rating
wire diametere and current rating
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 30th September 2007, 10:57 AM   #1
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Default wire diametere and current rating

I found this site: http://www.powerstream.com/Wire_Size.htm

I have a solid core 0.8mm diameter copper wire (air-core speaker inductor) that needs to pass a maximum of 10A current. I am somewhat confused with the chart as there are 2 current rating.

would this inductor be okay to use?

thank you for the help.
  Reply With Quote
Old 30th September 2007, 11:14 AM   #2
Juergen Knoop is offline Juergen Knoop  Germany
diyAudio Member
 
Juergen Knoop's Avatar
 
Join Date: Jan 2007
the chart does not apply to your application.
What is your application? Speaker choke?
10Arms? 400/800W @4/8 Ohm?
regards
  Reply With Quote
Old 30th September 2007, 11:14 AM   #3
Jan Dupont is offline Jan Dupont  Denmark
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
A 0.8mm wire isn't much, when you want to pass 10 amps through it. Especially when you intend to wind it up to a coil....
I think your coil rather fast will get very hot and short circuits
You should go for at 2mm copper wire.
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
  Reply With Quote
Old 3rd October 2007, 02:11 PM   #4
GeeVee is offline GeeVee  Australia
diyAudio Member
 
Join Date: Jan 2007
Location: Adelaide, South Australia
Default wire size

Jarthel.
It would probably more wise to consider what is the maximum resistance that you can accept.
In the case of a crossover inductor, for example, it is beneficial to have the lowest resistance that is practical.
Sure, 0.8mm may be able to handle 10amps, but consider the heat generated.
In other applications, the resistance may result in an unacceptable voltage drops / power loss

Regards,
GV
  Reply With Quote
Old 3rd October 2007, 02:45 PM   #5
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: The great city of Turnhout, BE
The resistance may be an issue with amplifier damping factor, but surely we are not expecting this amp to deliver *continuously* 10A? This IS audio, right? With an average power output of a few watts?

Jan Didden
__________________
Advertising is the rattling of a stick inside a swill bucket - George Orwell
Get more Linear Audio for less! Check out my Autoranger and SilentSwitcher
  Reply With Quote
Old 5th October 2007, 07:08 AM   #6
Jan Dupont is offline Jan Dupont  Denmark
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Once had a speaker system with 1 mm copper air-core inductors.
Worked fine until we had a little party using a NAD 80 Watts amplifier... After app. 5 hours we got a total melt down on two of the air-core inductors

Lesson learned; Design your filter to be able to handle what your speakers can handle, even thought you may not use this max for 99.9% of the time
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
  Reply With Quote

Reply


wire diametere and current ratingHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hook-up wire voltage rating question luvdunhill Parts 2 21st August 2007 08:09 PM
coil current rating for this amp Leolabs Solid State 12 7th August 2007 03:42 AM
Current rating and tube current draw cbutterworth Tubes / Valves 1 13th October 2006 05:42 AM
Whats the voltage rating on this wire? lgreen Parts 3 20th October 2004 10:08 PM
Transformer VA Rating vs. Current Rating JhonDoe Chip Amps 45 5th June 2004 02:11 AM


New To Site? Need Help?

All times are GMT. The time now is 01:34 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki