What Is a Wire Trough?

Wire troughs, also known as cable troughs, wiring troughs, and line troughs (varies by place), are electrical appliances used to standardize the wiring of power and data wires and fix them on the wall or ceiling.

Trunking

Wire trunking is also known as wiring trough, wiring trough,

Glossary

Wire trunking is also known as wiring trough, wiring trough,

There are two types of plastic and metal , which can play different roles.

The specifications of metal wire trunking generally used are 50mm × 100mm, 100mm × 100mm, 100mm × 200mm, 100mm × 300mm, 200mm × 400mm and so on.

Reference Standard

JB / T9660-1999 line trunking

1) The groove is flat and free of distortion, the inner wall has no burrs, the joints are tight and straight, and various accessories are complete.

2) The connection slot of the wire trunk should be flat, and the joints should be tight and straight. The slot cover should be flat, without warping, and the position of the wire outlet should be correct.

3) When the trunking passes through the deformed seam, the trunking itself should be disconnected, and the trunking should be connected with a connecting plate, which must not be fixed. The protective ground wire should have a compensation margin. The trunking below CT300 * 100 should be fixed with a bolt, Above CT400 * 100, two bolts must be fixed.

4) All non-conductive parts of non-metallic trunking should be connected and bridged accordingly to make them a whole and make the overall connection.

5) The cable trunks laid in the shaft and the cable trunks passing through different fire protection areas shall be provided with fire blocking measures according to the design requirements.

6) The length of the steel cable trough at the straight end exceeds 30m plus an expansion joint, and the cable trough is provided with a compensation device at the deformation joint.

7) The total length of the metal cable trough and its support shall be no less than 2 and connected to the ground (PE) or zero (PEN) trunk line.

8) The two ends of the connection plate between non-galvanized cables are connected to the copper core ground wire. The minimum allowable cross-sectional area of the ground wire is not less than BVR-4 mm.

9) The two ends of the connection plate between the galvanized cable troughs do not cross the ground wire, but the ends of the connection plate are not less than 2 connection fixing bolts with lock nuts or lock washers.