EF CY screened high-flex PVC control

EF CY screened high-flex PVC control cable is designed for use in free movement without tensile stress and in drag-chains. The tinned copper wire braid screen provides protection against electronic interference. 

These highly flexible EF CY cables work well in control applications where the cable is constantly moving.

Suitable for installation indoors in dry or damp areas. Installation outdoors is not recommended.

Highly flexible control cables are built along the same lines as YY/CY control cables but with finer stranded conductors. If protection against electrical interference is not required please see our range of EF YY cables.


Construction – EF CY
stranded plain copper conductors
PVC or polypropylene (PP) core insulation
cores twisted in layers
textile wrapping
optional PVC inner sheath
tinned copper wire braid screen
grey polyvinylchloride (PVC) outer sheath


Technical – EF CY
conductor make-up: class 6 (extra-fine stranded), see Stranding/Resistance page
bend radius: 4 x overall diameter (O/D) fixed, 7.5 x O.D flexing
voltage rating: 300/500V operating, 4000V test
current rating: as per YY, CY or SY style cables chart, see Current Ratings page
insulation resistance: maximum 20 MΩ x km
temperature range: -5°C to +70°C flexible, -40°C to +70°C static
flame retardant: according to IEC 60332-1
core identification: OZ, usually 2 core = numbered black cores without earth (green/yellow)
JZ, usually 3+ cores = numbered black cores with earth (inc. in core count)


A printable PDF specification is available here: EF CY screened PVC high-flex control cable.


Standard flexible versions can be found here: CY NR-OZ 

For alternative constructions (smaller colour coded cores, PUR sheath, unscreened, etc.) return to the Highly Flexible Control and Data front page

These cables are often available in low smoke zero halogen versions, designed for increased safety in the case of fire. Please contact us for more information. 


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.