ELCB for outdoor lighting unit

[johngoh2007]

Is it necessary to install ELCB for outdoor lighting unit?

 

[andy007]

I would, but if the main fusebox is on one you should be ok, but it is a good idea, if outside goes wrong it should just cut outside elcb off before cutting off the whole house. (I am not qualified so accept no responsibility, but have done loads of electrical work!)

 

[endoftheworld]

It's not always the first ELCB that trips first, just a matter of luck really.