Flex from junction box for outside lantern

[CAWORK]

Since most outdoor light manufacturers (especially for lanterns) recommend the fitting be connected with three core round flex, if the lantern was to be tapped from an existing circuit with t&e feeding a standard round jb, t&e run to a switch, can flex be run out of the jb to the lantern, i.e having two types of cable in an ordinary jb?

e.g

T&E-------JB---------FLEX--------LANTERN
/
/
/
T&E
/
/
/
SWITCH

What does everyone else normally do?

Regards

 

[holmslaw]

..

 

[CAWORK]

Thanks

I am not actually installing anything, have just a few times before seen what i have mentioned in instruction leaflets for external lights. Sorry, what I meant was say if the jb was indoors and the only external bit was the lantern itself.

Regards

 

[sparkwright]

I would say in real life most people just use flat pvc cable.

Often more than one cable will be at the light fitting anyway, where many lights are to be installed all round the perimeter of the building.

I think the manufacturers say such things to cover themselves.
Nowadays people are apalled at thought of installing additional junction boxes, it's also frowned upon installing flex in a fixed installation.

Though not a problem if done to reg.

Any doubts about a cable sealing a cable entry is usually resolved with a sealant of some kind.