2024

Autumn Holidays

Works Closed

14^th - 18^th Oct

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P & M'S  Track Current & Resistance Calculator.

Please feel free to download our Track Current & Resistance Spreadsheet Calculator. It was written using Microsoft Excel. Regretfully like most things, although we believe the spreadsheet to be accurate you must accept any liability resulting from its use.

No derating factor has been included in the calculations. It is a good idea to down rate the results by 30% for large tracks rising to 50% or more for small tracks.  

We have performed rough checks on the heating effect at currents up to 100amps. It is not easy to measure temperature rise, but the results were close to our expectations from the spreadsheet calculations.

6k Zipped File

46k xls file

 Download 

Download

The Spreadsheet is also available online.

 Internet Explorer 4 or later and Microsoft office 2000 or later plugins are req.