1、适用于电压为10KV及以下新建扩建的一般工业与民用建筑电缆、桥架安装和桥架内电缆敷设。
1. Suitable for the installation and laying of cables in general industrial and civil buildings with a voltage of 10KV and below.
2、电缆桥架安装和桥架内电缆敷设，应按已批准的设计文件施工。
2. Cable bridge installation and cable laying in the bridge shall be constructed according to the approved design documents.
3、由支、吊、托架支撑的托盘（槽）或梯架直线段、弯通非直线段组合而成，敷设电缆具有连续性的刚性结构系统，为电缆桥架。
3. The cable bridge is composed of a tray (groove) supported by a support, a crane and a bracket, or a straight section of a ladder and a bending-through non-straight section. The cable has a continuous rigid structure system.
4、金属电缆桥架及其支架和引入或引出的金属电缆导管必须接地（PE）或接零（PEN）可靠，且必须符合下列规定：
4. The metal cable bridge and its supports and the metal cable conduits introduced or withdrawn must be grounded (PE) or connected to zero (PEN) reliably and must comply with the following requirements:
5、金属电缆桥架及支架全长应不少于2处与接地（PE）或接零（PEN）干线相连接；
5. The length of metal cable bridge and support shall not be less than 2 points connected with grounding (PE) or zero-connection (PEN) trunk line.
6、非镀锌电缆桥架间连接板的两端跨接线铜芯接地线，接地线最小允许截面积不小于4mm2;
6. The minimum allowable cross-sectional area of the grounding wire is not less than 4 mm2.
7、镀锌电缆桥架间连接板的两端不跨接接地线，但连接板两端不少于2个有防松螺帽或防松垫圈的连接固定螺栓。
7. The two ends of the connecting plate between galvanized cable bridges do not span the ground wire, but not less than two connecting fixed bolts with anti-loosening nuts or anti-loosening washers at both ends of the connecting plate.
8、电缆敷设严禁有绞拧、铠装压扁、护层断裂和表面严重划伤等缺陷。
8. Cable laying is strictly prohibited from such defects as wrenching, armour flattening, fracture protection and serious scratches on the surface.
9、电缆桥架处如有防火要求的场所，应采取防火隔离措施。
9. Where there are fire prevention requirements at the cable tray, fire isolation measures should be taken.