Tip: registered users can save calculations.
Our cable sizing calculation has been here for some time. Based on feedback from our users, now is the time to expand
and develop the calculation further.
We are creating a brand new cable engineering web application. The application will significantly expand on the
current calculation, allowing you to manage all your project cables across all your devices. We will be launching the
application on it's own site - myCableEngineering.com. The anticipated release
date is the second quarter 2016.
Once the new application is up and running, we will be discontinuing the existing myElectrical.com cable sizing
calculation. Please, bear this in mind when using the calculation as it stands. In the meantime you can also bookmark
the new site and subscribe to the sites newsletter by visiting myCableEngineering.com.
Cable sizing compiles with:
- BS 7671:2008, IEE Wiring Regulations 17th Edition
- IEC 60364:2001
Cable size is selected as follows:
1. Cable is calculated on current capacity
2. Voltage drop is calculated (and cable size increased if necessary)
3. Fault level withstand is calculated (and cable size increased if necessary)
Tip: if you don't want fault level to be considered, you can set it to a very low value.
To find out more about how the cable sizing tool works, please see:
- Cable Sizing Tool - Notes Post
To select or size Circuit Protective Conductors (CPC ), please use our:
- Circuit Protective Conductor Sizing Tool
To convert between Metric and American Wire Gauge, you can use our:
- Metric AWG Conversion Table