a Steel Box Section Build with SBR20 & Ballscrews Plus a few questions

[grain_r]

Hello
I am looking at CY Cable at the moment and I see most have been using 4 core with the earth as the outer sheathing, But I have seen a 5-core CY cable and thought that might be a better option. but just wondering if the Earthing on the outer cable is being used to help with shielding.

https://www.edwardes.co.uk/categorie...flexible-cable

thank you

[Clive S]

Hello
I am looking at CY Cable at the moment and I see most have been using 4 core with the earth as the outer sheathing, But I have seen a 5-core CY cable and thought that might be a better option. but just wondering if the Earthing on the outer cable is being used to help with shielding.

https://www.edwardes.co.uk/categorie...flexible-cable

thank you

4 core is the normal. The screen should be grounded to the star point in the control box . the screen should not connect to the motor case. ie grounded one end only

( star point is where all the various earths are made to avoid ground loops)