For connecting light electrical devices (radio devices, table lamps, clocks, etc.) under very low mechanical stress in households, as permitted by the relevant device regulations. The cable can also be used as a speaker cable. The cable is not suitable for connecting cooking and heating appliances or for outdoor use. CCA refers to bi-metallic single and multi-core cables with a copper-clad aluminum core for high-frequency applications. The so-called skin effect, or current displacement, is a physical phenomenon caused by high-frequency alternating currents. The current density inside the conductor decreases with increasing frequency compared to that on the outer surface. Special feature: CCA conductors.