TCWB screened rubber (380-P, 380-TQ, 680-TQ)

TCWB screened rubber multicore flexible cable is designed to connect portable or fixed equipment. Commonly used for use as power extension leads on building sites and where exposed to harsh conditions. The copper braid screen provides protection against electrical interference and can also protect against mechanical damage. Also referred to as 380-P, 380-TQ or 680-TQ.   

380-P & 380-TQ have a lower voltage rating than 680-TQ. These cables can be referred to as HOFR = heat resistant, oil resistant, flame retardant rubber. Suitable for indoor or outdoor applications including in wet and oily areas.

Construction – TCWB screened multicore rubber
fine stranded tinned copper conductors
rubber compound core insulation
cores twisted together with rubber bedding
tinned copper wire braid (TCWB) screen
black HOFR rubber outer sheath


Technical – TCWB screened multicore rubber
conductor stranding: class 5 (flexible fine stranded), see Stranding/Resistance page
bend radius: 8 x overall diameter (O/D)
voltage rating: 38O-P & 380-TQ = 300/500V operating
  68O-TQ = 450/750V operating
current rating: as per flexible rubber 60°C chart, see Current Ratings page
temperature range: -25°C to +60°C, should not be installed below 0°C
construction: 380-P/380-TQ = generally to BS6500, 68O-TQ = generally to BS6007
flame retardant: according to IEC 60332-1
core identification: 2 cores = coloured to VDE 0293 without earth (green/yellow)
3-5 cores = as above with earth (inc. in core count), see Colour Codes page
7+ cores = numbered black cores with earth (inc. in core count)

A printable specification is available here: TCWB screened rubber (380-P, 380-TQ, 680-TQ)

For more rubber sheathed cables return to the Rubber or PUR Flex and Welding front page.

All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.