Bipolar Cable Clamps (Solar)

I've made these bipolar cable clamps and use it for cable management in my Solar Power Plant. It fits for 6mm, 7mm, 9mm and 11mm cables.

6 to 9mm are separated and use only one screw. Notice the two Slim Lines at the lower Wall Part - the Lines will be pushed into the wall or wood and prevent the clamp from rotating once the screw has been place (in theory). Pro: You only need one Screw, Con: The Lines might leave a mark in the wall, less than 2mm deep)

Also notice the Air Gap in the middle of the 6 to 9mm clamps. If you tighten the screw well enough the 6mm Clamp will have a diameter of 5,75mm so nothing will happen if you accidently pull on the cable.

The 11mm Cables are pretty stiff, that's why I've decided to use 2 Screws, so there is no need for the fixing lines.