This myCableEngineering software FAQ answers common questions about using our software.
Cable Sizing
When should I use User Defined Rating (UDR)?
Use User Defined Rating when the sustained current capacity of the cable has been determined outside the standard sizing tables available in myCableEngineering. This may be appropriate where the rating comes from a manufacturer’s datasheet, a project-specific calculation, a specialist installation method or another recognised engineering assessment.
When using UDR, enter the current rating, the conductor operating temperature and the conditions that apply to that rating. The value is then used by the software for downstream checks such as voltage drop, impedance and fault-rating calculations.
For most cases, you will want to select a sizing standard from the dropdown box. This will allow you to size and determine the correct CSA for your cable.
Can I calculate cables buried in soil?
Yes, you can calculate cables buried in soil if allowed by the selected sizing standard. For example, BS 7671 provides calculation methods for multicore armoured cable buried in soil, but not for single-core. ERA 69-30 and IEC 60502, for high-voltage cables, also allow calculations for buried cables.
Note: If you are using a low-voltage single-core AWA cable, BS 7671 does not cover this. Use ERA 69-30 for this cable.
Earthing
Earth Return Paths
The earth return paths include all (armour, screen, etc.) but not any path through the earth or ground. This is extremely complicated to calculate, would require additional information and any resultant value would be significantly large compared to any other return path.
If you are noticing high values of R2 or Z2, please ensure that you have specified a metallic earth return path.
Troubleshooting – DIY
If you experience any issues with the application, you can try the following:
- Try a hard refresh of the browser to ensure files are up to date (Ctrl+F5)
- Try in an incognito browser window to eliminate an add-on or customer settings causing issues.
- Pressing F12 opens the developer tools; if “Console” is selected, you may be able to capture any error messages.
We support and fully test on the latest versions of Chrome and Edge. Our development framework additionally lists Firefox, Safari, iOS, and Android as being supported. If you are using a different or older browser, please try the latest Chrome or Edge to see if it is a browser issue.
Sign-in links. If you have not received your sign-in link, please check your spam folder and ensure that the email address you entered is correct. Sign-in links are single-user and have a limited duration.