Check the electrical load and ensure that the sensors do not exceed the 10 Amp maximum. Replace any damaged cables. Check the tightness of electrical connections along the. In modern power systems, distribution boxes are the core equipment for power distribution and control, and their stable operation is crucial to ensuring the safety and reliability of power supply. Examine for any signs of overheating or arcing. In this article, you will learn everything you need to know about installing, expanding or replacing a distribution box - from the legal.