山东节能搅拌器批发

1 metal cable tray and a bracket and a metal cable introduction or removal of the catheter must be grounded (PE) or

2.金属电缆桥架及其支架全长应不少于2处与接地(PE)或接零(PEN)干线相连接；

A total length of 2 metal cable tray and support should be not less than 2 and the ground (PE) or zero (PEN) lines

connected;

3.非镀锌电缆桥架间连接板的两端跨接铜芯接地线，接地线最小允许截面积不小于4mm2；

3 non galvanized cable bridge between both ends of the connecting plate is connected across the copper coregrounding wire, grounding wire allowed minimum cross-sectional area of not less than 4mm2;

4.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。

4 galvanized cable bridge between both ends of the connecting plate does not cross the grounding conductor, but bothends of the connecting plate is not less than 2 a nut anti loose washer fixed bolt connection or the.

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， 直线段钢制电缆桥架长度超过30m、铝合金或玻璃钢制电缆桥架长度超过15m设有伸缩节；电缆桥架跨越建筑物变形缝处设置补偿装置。

Cable laying are strictly prohibited wringing, sheathed squash, protective layer fracture and serious surfacescratches and other defects, the straight line segment steel cable bridge length exceeds 30m, aluminum alloy andglass steel cable bridge length of more than 15m is provided with expansion joints; cable bridge across the buildingdeformation joint setting compensation device.

山东电缆桥架