According to national standards, the wall thickness of the low-voltage distribution box should not be less than 1. Generally speaking, the thicker the box, the better its endurance, heat resistance, and safety. The gauge tells us how thick the metal is. Therefore, when I talk about customizing my distribution boxes, sheet metal thickness is. For distribution boxes that handle only lighting circuits or small power loads, if the incoming wire size is less than 10 square millimeters and the number of circuit switches is fewer than 20, the width of the box should be calculated by summing the width of the switches and adding an additional. High-Performance Fiber Connectivity for FTTH Networks Our FTTH fiber boxes provide complete solutions for high-performance fiber optic networks, including fiber distribution boxes (FDB), fiber termination boxes (FTB), and fiber access terminals (FAT). Distribution box characteristics Safety: The fuse is an important component of any distribution board. A fuse is a critical component of a distribution board because it prevents overcurrent from flowing through. Eaton's power distribution systems are designed to be as compact and energy efficient as possible while easy access for installation, operation and maintenance.