Fire resistant, fire retardant cable with a Low Smoke Zero Halogen (LSZH) sheath. Ideal for use in buildings where systems need to remain operational. CWZ fire performance cable are designed for applications such as fire detection and fire alarm systems in buildings, for public address systems and emergency lighting.

CWZ Fire Performance Cable Technical Data

Cross	Outer diameter		Current	Voltage drop		Weight
section	(approx)		rating	(V/A x km)		approx
				AC/ DC	AC
c x mm²	Min. (mm)	Max. (mm)	(A)	2 core loaded	3 core loaded	kg/km
2 x 1.0	6.9	8.2	15	44		87
2 x 1.5	7.3	8.7	19.5	29		103
2 x 2.5	9.2	10.8	27	18		164
2 x 4.0	1.5	12.3	36	11		247
3 x 1.0	7.3	9.6	13.5		38	102
3 x 1.5	7.8	10	17.5		25	123
3 x 2.5	9.8	12.7	24		15	198
3 x 4.0	11.2	14.1	32		9.5	295
4 x 1.0	8.2	10.6	13.5		38	125
4 x 1.5	8.7	11.2	17.5		25	151
4 x 2.5	10.9	14.1	24		15	242
4 x 4.0	12.4	15.3	32		9.5	362

Standards: BS7629 part 1, BS5839-1: 2002, Cat. Standard.

Fire resistant: BS6387 CWZ, BS8434-1: 2003, BS EN 50200 PH 30

Flame retardant: BS EN 50265 1 & 2.1, IEC 60332 part1

Low smoke: BS EN 50268, IEC 61034

Halogen free: BS EN 50267, IEC 60754

Low toxicity: BS EN 50267, IEC 60754

Low corrosivity: BS EN 50267, IEC 60754

Temperature range: - 20 to + 60 °C

BS6387 CWZ provides test to:

Category C:

Exposed to fire @ 950 °C for 3 hours.

 

Category W:

Exposed to fire @ 650 °C for 15 mins then exposed to fire @ 650 °C with water for 15 mins.

 

Category Z:

Exposed to fire @ 650 °C for 15 mins then exposed to fire @ 650 °C with mechanical shock for 15 mins.

 

The current and voltage drops and data above are indicated for continuous duty operation.

They are as defined in BS 7671: 2001, table 4D2A and apply to:

     Maximum conductor temperature = 70 °C

     Nominal frequencies = 50 - 60 Hz

On cable in air, clipped direct at ambient air temperature = 30 °C

 

Voltage drop:

The data shown above is based on Cos φ = 1

For other laying conditions refer to BS7671: 2001 standard.

Conductor:

1mm² and 1.5mm² Solid bare copper, class 1. 2.5mm² and 4mm² Stranded bare copper, class 2 according to BS6360, IEC 60228

Insulation:

Silicone Rubber to BS7655

Screen:

Aluminium / Polyester tape

Outer sheath:

Halogen free polyolefin

Un-insulated protective conductor:

Tinned copper according to BS6360: same class and cross-sectional area as insulated conductor.

Sheath colour:

Red or White

Core identification:

2 core: Brown & blue, 3 core: Brown, blue & grey, 4 core: Brown, black, grey & blue.

Voltage range:

300/500 volts