Cable sizing compiles with:
 - BS 7671:2008
   IEE Wiring Regulations 17th Edition
 - IEC 60364:2001

Help and Tips

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

CPC Sizing

To select or size Circuit Protective Conductors (CPC ), please use our:
 - Circuit Protective Conductor Sizing Tool

Metric AWG Conversion

To convert between Metric and American Wire Gauge, you can use our:
- Metric AWG Conversion Table