Sylvie LE BRAS (asker) Jul 8, 2011:

YES ! "In three-core flex the cores are colour coded; brown for live, blue for neutral, green and yellow striped for earth (3)."

It fits my context.

Tony M Jul 8, 2011:

flex In point of fact, the abbreviated term 'flex' is simply a colloquial, non-technical word for the connecting cable of almost anything — the flexible bit that the user comes into contact with.

The real meaning of cable is simple something that contains more than one conductor (or wire in layman's speech) — there is nothng inherent about the word 'cable' to say whether it is flexible or rigid, installed or free.

I'm afraid the article F-X has found is a rather poorly written (from a technical standpoint ) mish-mash of technical and non-technical terminology, used with variable degrees of precision.

FX Fraipont (X) Jul 8, 2011:

flex (ible cables) Flexes and cables
Flexible cords - choosing the flex

Flex or cable?
There are two types of electric wiring: flexible cords (flexes) (1) connect electrical appliances to the mains via plugs; cables (2) are used for permanent wiring around the house.
In three-core flex the cores are colour coded; brown for live, blue for neutral, green and yellow striped for earth (3).

There are many sizes and types of flexible cord. They are all made up of two or three separately insulated cores. In each of these cores the conductor is made up of many thin strands of copper which give the cord its flexibility.

In three-core flex the cores are colour coded: brown for live, blue for neutral, green and yellow striped for earth (3).
http://www.rospa.com/homesafety/aroundtheuk/northern-ireland...

claude-andrew Jul 8, 2011:

Flex (to me) means the pair of insulated conductors connecting the lampholder to the terminal in the ceiling rose. I think they just want you to remove this flex from the ceiling rose by unscrewing the terminals.
See http://www.ogbdirect.co.uk/ceiling-rose-clear-base-3-termina...