We are designing a product for industrial energy storage systems. Multiple units are connected with pre-fabricated cable assemblies of 2-4 separate leads that are terminated in connectors unique to our system, similar in concept to these:
Now, for branding purposes, we want to use our company‘s colours for the leads in these cables. Some of them conduct high voltage and current during use.
For now, we are looking to only sell this product in the EU.
I found a few norms regarding single leads and screw terminals in machine building, where only certain ways of marking cables are allowed, and standards for mains AC cabling, but nothing that explicitly talks about pre-fabricated cables.
How can I find out whether custom colouring of cables is allowed in the field our product will be used in? Is this sort of thing maybe common practice in the industry?