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Minimum cable installation temperatures

25 September 2017

With winter soon to be upon us, now is the time to familiarise yourself with the minimum handling and installation temperatures of electrical cables.

For temperatures above 5°C, the installation of any cable should not be an issue. Below that temperature, however, the minimum handling temperature will depend on several factors including: the type of cable, the severity of cable bends, the speed of bending and the manner in which the cable is installed. These guidelines are also applicable for cables being installed when the ambient temperature is above 5°C, but which have been stored at a lower temperature in the previous 24 hours (48 hours for large drums of cable). 

Prysmian Group advice for the minimum installation temperature for its cables, depending on cable sheath material is as follows:

Note: An * indicates cables can only be installed at this temperature if the cable has been stored above 0°C for the previous 24 hours.


Standard domestic type wiring

Sheath Material

Minimum Installation Temperature (°C)

Minimum Operating Temperature once installed (°C)

PVC to BS 6004 or BS EN 50525-2-31

0*

-15

Low Smoke Zero Halogen (LSOH) to BS 7211 or BS EN 50525-3-41

-15*

-25

 


Armoured cables

Sheath Material

Minimum Installation Temperature (°C)

Minimum Operating Temperature once installed (°C)

PVC to BS 5467, BS 6724, BS 6622 & BS 7835

0°C*

-15°C

LSOH to BS 5467, BS 6724, BS 6622 & BS 7835

-15°C*

-25°C

 

Armoured cables with MDPE sheath

Sheath Material

Minimum Installation Temperature (°C)

Minimum Operating Temperature once installed (°C)

MDPE to IEC 60502, BS 6622 or generally to BS 55467

-15°C*

-25°C

 

LSOH screened cable

Sheath Material

Minimum Installation Temperature (°C)

Minimum Operating Temperature once installed (°C)

LSOH to BS 7629 & BS 8436

-15°C*

-25°C

 

Utility BS Cables

Sheath Material to BS 7870-3.40 &3.50 (600/1000V) and BS 7870-4.10 & 4.11 (11 to 33kv)

Minimum Installation Temperature (°C)

Minimum Operating Temperature once installed (°C)

PVC

0°C*

-15°C

LSOH

-15°C*

-25°C

MDPE

-15°C*

-25°C

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