In scenarios such as buildings, industries or data centres, the distribution design of bridges (cable trays) has a direct impact on the safety, maintainability and cost of cable laying. The following are the key points and common solutions for bridge distribution: 

1. Basic principles of bridge distribution 

Shortest path: reduce cable length and cost.

Avoiding obstacles: bypassing ventilation ducts, fire-fighting facilities, structural beams, etc.

Layering: Strong and weak power bridges are layered (to avoid interference) or keep spacing (e.g. ≥300mm).

Load matching: choose the type of bridge (trough, ladder, tray) according to the number and weight of cables.

2. Common Scenarios of Bridge Distribution 

(1) Industrial Factory 

Laying along equipment or pipe supports: the bridge is parallel to the production line, which is convenient for equipment power supply.

Multi-layer bridge: 

Top layer: high-voltage power cable (such as motor power supply).

Middle layer: control signal line (e.g. PLC line).

Bottom layer: weak power cables (e.g. communication cables).

(2) Commercial buildings/office buildings 

Inside corridor ceiling: centralised wiring, hidden and beautiful.

Vertical distribution in the shaft: connect to the floor distribution room (fire blocking is required).

(3) Data centre 

Under raised floor: under server cabinets, flexible adjustment.

Top alignment: commonly used in large data centres (hot and cold aisle isolation design)