Aluminum alloy bridgeways must consider the cable routing and detail handling during installation. Moreover, there are various types of bridgeways available for cable installation, each with its unique installation characteristics.

The ground jumper wires can be installed at random on both sides of the bridge or through a gap connection, but not on the prominent side. The wire ferrules and claw-shaped washers are assembled in reverse order for the ground jumper wires, some do not have claw-shaped washers, and the galvanized bridge ground bolts lack anti-loosening washers.

2. Cable tray and bracket not securely fastened; bridge support not properly grounded; no firestop installed for the pass through fire partition.

　　3.Aluminum alloy bridge beamThe insulation against electrochemical corrosion between the steel brackets has not been treated. The bends, tees, etc., of the bridge are not using the ready-made accessories that come with the bridge, but are made on-site. The processing quality does not meet the standard requirements.

4. During the installation of the screw rod bracket, anti-vibration supports were not set as per specifications, and the steel bracket was not constructed in accordance with anti-corrosion requirements.

5. Metal cable trays and their supports are not properly grounded throughout their entire length, and expansion joints are not installed as per specifications.

6. Ceiling tray, channel bridge cover plate missing. The nuts of the fixing bolts for the bridge plate connections are installed on the inside of the bridge, and there is no grounding connection made between the bridge, the distribution box/cabinet, and the steel pipes connected or connected to them.