Flex or T&E

[Snailspark]

When installing multiple downlights, I always use T&E but I’ve seen a few cases where flex is used. Does it matter? Is there a reg or best practice on this? Just interested in peoples input

 

[ForkEnigma]

Flex CCC is higher than t and e for same size

Depends on how its installed. Many derating factors

 

[James]

Depends on how its installed. Many derating factors

Can you provide an example of a flexible cable that has a lower current capacity than twin and earth (same csa) using the derating factors for any method of install?

 

[Dustydazzler]

Flex is generally more expensive and slightly more awkward to strip imo...I recently fitted some hi-tuff flex and it was absolutely horrible to strip.
in a domestic house I can’t see why anyone would want to use it for fixed wiring , except for multi core boiler wiring and clipping surface for exterior jobs...

 

[radiohead]

I think a lot of the dislike of flex for fixed wiring in domestics comes from it's undoubted 'DIY' feel, nothing more than that.
Ultimately as long as it's of the correct current rating and properly terminated then there is no reason why it should not be used where the installer has a preference.
All of the reasons given above amount to no more than personal preference and not valid technical reasons why flex should not be used.