2.5mm in lighting circuit

[Stroppy]

Why on earth are they still allowed then? (Not that I approve of the things!)

 

[Engineer54]

Why on earth are they still allowed then? (Not that I approve of the things!)

God knows!! lol!! But these wire nuts can be quite big, and certainly not suitable for UK and European back boxes etc. One of the biggest problems with these wire nuts is that now they have wings on them, so extra force can be applied. Trouble is, conductors can snap (and often DO) without the installer being aware, thus possibly causing a high resistance joint.


That was the method i was hinting at above, that was used on that particular project. Never Ever again, they are nothing but bloody trouble, with a bold Capital T!!

 

[i=p/u]

well if makes you feel better i used 4mm swa for outside lighting , and back in the car again to wholesalers as i wasnt taking it out.. what aday that was....

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well if makes you feel better i used 4mm swa for outside lighting , and back in the car again to wholesalers as i wasnt taking it out.. what aday that was....

 

[Fin170]

Well when everything went florescent people insisted on 1.5, so I guess with everything going LED it's only logical to start using 2.5 :lol:

 

[Jonny66]

You could look at Table B7 OSG.....with a circuit up to 16amp and fault current <3kA on a C curve breaker minimum cpc is 1.5mm..........>3kA but <6kA on a B curve minimum cpc is 2.5mm......scare:dizzy2:y.....

 

[shocking_eg]

done some work in a factory recently.

florey banks were wired in 6mm !

lovely stuff