Wire: Current Formula?

Discussion in 'General Electronics Chat' started by Steve1992, May 1, 2010.

  1. Steve1992

    Thread Starter Senior Member

    Apr 7, 2006
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    Is there a formula to calculate the current handling capacity for wire?

    Eg. 26 AWG/1x0.4mm
     
  2. bertus

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  3. jpanhalt

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  4. rjenkins

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    For any given copper size, it also depends on the insulation type, how many wires are bundled together, whether they are in open air / conduit / buried, ambient temperature etc.
     
  5. someonesdad

    Senior Member

    Jul 7, 2009
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    Here's a spreadsheet that you can use -- you'll have to decide how appropriate its predictions are for you. The details are given on the Ampacity tab. It's an Open Office spreadsheet, so you'll have to install Open Office if you want to use it.

    I attached it as a PDF to give you an idea of its contents; however, the pagination is messed up and things don't get presented in logical order.
     
  6. Papabravo

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  7. hgmjr

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