AUXILIARY SWA

7 CORE 2.5 STRANDED XLPE/SWA/PVC

Auxiliary Steel Wire Armoured cables are predominantly used for industrial wiring and signalling. They are designed to be used in industrial areas, areas with higher risk of mechanical stress/damage, in and around buildings and other similar environments. These cables are designed to be installed in air, clipped to surface, on cable tray/ladder work, embedded in concrete and buried direct or in ducting underground. Multicore Loading In practice, the majority of cores in a multicore control cable of 7 cores and above carry only small or intermittent current and a current rating based on the assumption that all cores are equally loaded is quite unrealistic. In most cases only two cores, the line and neutral feed cores are likely to approach the maximum permitted loading. The current rating for twin core cable can therefore be used in these cables. Where more than two cores are known to carry an appreciable current, the multiplying factors applicable to the two core ratings are given below. The normal current rating for twin cable may also be used in cases where the number of cores carrying appreciable current does not exceed the square root of the total number of cores in the cable.

SKU: 7C2.5

Reference: 10537464

Product Group: SWA AUX

Supplier: Doncaster Cables

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Certifications & Standards

Quick Facts

SKU

7C2.5

Reference

10537464

Product Group

SWA AUX

Specifications

Technical Specifications

Weight

496.08

Unit

1000

Number of conductors

Conductor Size

2.5

Construction

Plain Annealed Copper Conductor / XLPE Insulated / LSNH Bedded / Galvanised Steel Wire Armour / LSNH Sheathed. 600/1000V

Standard

BS 6724

Table / Clause

Table 18

Conductor

Plain Annealed Copper Class 2 Stranded to BSEN 60228

Insulation

Thermosetting XLPE Type GP8 to BS 7655-1.3

Bedding

Compatible Polymeric Material (PVC)

Armouring

Galvanised Steel Wire

Sheathing

PVC Type 9 to BS 7655-4.2

Voltage Rating

600/1000V

Minimum Operating Temperature

-15°C

Maximum Operating Temperature

90°C

Minimum Bending Radius

8 x diameter

Colour

Black

Core Colours

White numbered cores

Current Ratings

For current ratings refer to table 4E4A of BS7671 IET Wiring Regulations.

Current Rating (In Air (A))

Table 4E4A of BS7671 IET Wiring Regulations Reference Method E

Current Rating (In Ground (B))

Table 4E4A of BS7671 IET Wiring Regulations Reference Method D

Nominal Stranding of Conductor (mm)

7/0.67

Nominal Radial Thickness of Insulation (mm)

0.7

Nominal Radial Thickness of Sheath (mm)

1.4

Nominal Radial Thickness of Bedding (mm)

0.8

Approximate Overall Diameter (mm)

17.1

Approximate Weight (kg/km)

618

Recommended Gland Size

Galv. Steel Wire Armour

0.9

Cable Types

MULTICORE STEEL WIRE ARMOUR

Conductor Class to BS EN 60228

Class 2

Nominal Diameter of Armour Wire (mm)

0.9

Bullet1

BASEC Approved

Bullet2

Tested and quality assured by Doncaster Cables

Multicore Loading

In practice, the majority of cores in a multicore control cable of 7 cores and above carry only small or intermittent current and a current rating based on the assumption that all cores are equally loaded is quite unrealistic. In most cases only two cores, the line and neutral feed cores are likely to approach the maximum permitted loading. The current rating for twin core cable can therefore be used in these cables. Where more than two cores are known to carry an appreciable current, the multiplying factors applicable to the two core ratings are given below. The normal current rating for twin cable may also be used in cases where the number of cores carrying appreciable current does not exceed the square root of the total number of cores in the cable.

Steel Wire Armour

Galvanised Steel Wire

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