For connecting lightweight electrical devices (radio equipment, table lamps, clocks, etc.) with 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-plated 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 at the outer surface. Special feature: CCA conductors.