The signal light erected on the pillars of the intersection is to provide timely instructions to the relevant vehicles. Because of its high erection position, it is easily damaged by direct lightning. The power line is led by a signal controller. No signal line is introduced. There is a threat of direct lightning and overvoltage of the power line, so the overvoltage and power line will be directly hit. Voltage is the focus of protection.
The struts for setting up traffic lights are equipped with current limiting lightning rods for direct lightning protection, and the tops of the brackets and current limiting lightning rod bases must ensure reliable electrical and mechanical connection. The grounding of the bracket itself or the 40×40 flat steel is connected to the grounding net of the bracket itself. The ground resistance requirement is less than 4 ohms.
