Is the strong current trough bridge a fire-resistant bridge?

Strong current trough bridge is a metal bridge used to carry strong current cables and wires, while fire-resistant bridge is a bridge that can maintain its load-bearing capacity for a certain period of time in the event of a fire. The strong current trough bridge can carry strong current cables and wires under normal conditions, but it cannot guarantee that it can still maintain its load-bearing capacity in the event of a fire. Therefore, according to relevant standards, strong current trough type cable trays can be considered fire-resistant cable trays, but they need to meet certain requirements. For example, the strong current trough type cable tray needs to undergo fire resistance testing according to relevant standards and obtain corresponding certification and labeling. Therefore, if the strong electric trough bridge has obtained relevant fire resistance testing and certification, it can be considered a fire-resistant bridge. However, in specific use, evaluation and selection still need to be based on the actual situation.