Wires & Cables

  Wires & Cables

 

-           Wires and cables shall be fabricated of the solid or stranded copper conductors in accordance with IEC 60228.

 

Light circuits shall be wired in not less than 3mm² cables and power circuits shall be wired in not less than 4mm² cables.

 

-           Different circuits for power sockets in the same room shall be fed from the same phase for safety provision.

 

-           The insulation of all wires and cables shall be rated for at least 85 deg °C for polyvinyl chloride (PVC) and 105 deg°C for thermoplastic. Polyethene (PE) cables.

 

-           The identification by colour in multicore wires and cables shall comply with IEC 60446.   

 

Wires :

 

-   Wires are single-core insulated multicore insulated and sheathed conductors which are used only for light-duty indoor applications. The conductor insulation and the sheath shall be polyvinyl chloride (PVC) and shall be rated for 0.6/1 k.V, and shall comply with IEC 60189.

 Cables :

 

-   Cables for power and lighting for indoor use shall be unarmoured with a separate earth conductor. For outdoor installation, armoured cables, laid on cable trays, and in case of road crossing steel pipes shall be used.

 

-   The conductor insulation and the sheath shall be polyvinyl chloride (PVC), shall be rated at least for 0.6/1k.V, and shall comply with IEC 60227.

 

Identification of conductors by colours

 

The preferred colour scheme to be used to identify the cores of a flexible cable or cord is:

 

                Three-core cable or card : either green or yellow, light blue, black or light blue, black, brown.

 

      Four or five cores cable or cord:

Either green/yellow, light blue, black, brown and for the fifth core, black or brown.