We'll show you how to run the wires, install the proper jacks and hook up the central distribution box. A cable distribution box is an electrical device used to collect, distribute, and protect electrical power. It is mainly used to isolate fault circuits, prevent overload, and ensure the safe operation of. However, the key to a safe and reliable system lies in proper installation. In this guide, we'll break down everything you need to know to install. In addition to the current-carrying capacity, this choice is dependent on the requirements relating to the panel, the rated voltage, the installation method, the type of insulation, the types of application, etc. What's more, the expense is modest when you do it yourself.