BS7629-1 Cable

Fire resistant screened cables with low smoke and corrosive gas emissions and a voltage rating of 300/500V for fixed installation.

to BS7629-1 Cable datasheets

BS7629-1 Cable

Cables meeting the requirements of BS7629-1 standard have their primary function for use in emergency lighting, fire alarm circuits and fire detection systems.

BS7629-1 Cable Applications

British Standard BS7629-1 (Part 1) refers to multicore cables providing circuit integrity under the effects of fire, mechanical shock and water, for a prescribed period of time, to support fire-fighting efforts and protecting lives and essential equipment.

There are three performance levels detailed in BS7629-1 standard: Standard 30, Standard 60 and Enhanced 120.

Cables covered under BS 7629-1 have the following characteristics:

Thermosetting insulation with a voltage rating of 300/500V

Resistance to fire (Circuit integrity)

Emit limited amounts of smoke and corrosive gases in the event of fire

Intended for use in emergency lighting, fire detection and fire alarm system circuits

Standard BS7629-1 : Cable Construction

	Multicore cables
Uninsulated conductors	Tinned annealed copper (Class 1 or 2)
Insulated conductors	Plain or tinned annealed copper (Class 1 or 2)
Drain wire	One or more tinned annealed copper wires
Insulation	Type EI 2, Type EI 3, Type EI 5, GP4 or GP6
Screen	Metallic or laminated metallic tape
Sheath	LTS 3 compound

Multicore circular cables can be of 2-core, 3-core or 4-core construction with uninsulated circuit protective conductor, and of 7-core, 12-core, and 19-core construction with uninsulated tinned annealed copper drain conductor of not less than 0.5mm². All cables in this standard include a metallic layer, which provides electrostatic screening.

Additionally, copper conductor cables manufactured to BS7629-1 have a Low Smoke Zero Halogen (LSZH) insulation and sheathing that meets the standard of BS EN 60754 which specifies that the level of hydrochloric gases emitted during fire may not be greater than 0.5%. Complete cable tests include Smoke emission to EN 61034-2 , Flame propagation to EN 60332-1-2 and fire resistant testing as detailed below, depending on the classification of the cable.

BS7629-1 cable resistance to fire, mechanical shock and water

Standard Reference	Category	Specification
15.6.2	Category STANDARD 30	The complete cable shall, as a minimum, have a duration of survival of 30 mins when tested in accordance with BS EN 50200. Note: This corresponds to Class PH30 a detailed in BS EN 50200. In addition, it shall meet the 30 mins survival time when tested in accordance with BS EN 50200 Annex E.
15.6.3	Category STANDARD 60	The complete cable shall, as a minimum, have a duration of survival of 60 mins when tested in accordance with BS EN 50200. Note: This corresponds to Class PH60 a detailed in BS EN 50200. In addition, it shall meet the 60 mins survival time when tested in accordance with BS EN 50200 Annex E.
15.6.4	Category ENHANCED 120	The complete cable shall, as a minimum, have a duration of survival of 120 mins when tested in accordance with BS EN 50200. Note: This corresponds to Class PH120 a detailed in BS EN 50200. In addition, it shall meet the 120 mins survival time when tested in accordance with BS 8434-2.

Standard Reference

Category

Specification

15.6.2

Category STANDARD 30

The complete cable shall, as a minimum, have a duration of survival of 30 mins when tested in accordance with BS EN 50200.

Note: This corresponds to Class PH30 a detailed in BS EN 50200.

In addition, it shall meet the 30 mins survival time when tested in accordance with BS EN 50200 Annex E.

15.6.3

Category STANDARD 60

The complete cable shall, as a minimum, have a duration of survival of 60 mins when tested in accordance with BS EN 50200.

Note: This corresponds to Class PH60 a detailed in BS EN 50200.

In addition, it shall meet the 60 mins survival time when tested in accordance with BS EN 50200 Annex E.

15.6.4

Category ENHANCED 120

The complete cable shall, as a minimum, have a duration of survival of 120 mins when tested in accordance with BS EN 50200.

Note: This corresponds to Class PH120 a detailed in BS EN 50200.

In addition, it shall meet the 120 mins survival time when tested in accordance with BS 8434-2.

BS7629-1 Cable selection

Eland Cables supplies fire performance cables manufactured in accordance with BS7629-1, including the Standard and Enhanced Fire Resistant cable.

BS7629 cables are referenced in a number of British Standard Codes of Practice as appropriate for use. These include:

- BS8519:2020 - TC : The selection and installation of fire-resistant power and control cable systems for life safety, fire-fighting, and other critical applications. Code of Practice

- BS5839-9:2021 - TC : Fire detection and fire alarm systems for buildings - Code of practice for the design, installation, commissioning and maintenance of emergency voice communications systems.

- BS5266-1: 2016 - TC : Emergency lighting - Code pf practice for the emergency lighting of premises.

For support with the selection of the most appropriate cable, or for clarification on compliance and testing requirements, please speak to the technical team for more information.

BS7629-1 Cable

2 product(s)

Info

Standard Fire Resistant Cable

Info

Enhanced Fire Resistant Cable

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