Thanks for your reply, this is what I'm saying, they have put power straight into the isolator socket which then goes into the 25amp rccd , I would have thought that the power should have gone straight into the rccd first and the isolator socket should have had its own separate protection .
Yes this is not my work it's something that I've came across, it's on the back of some portable toilets . Each toilet has its own 12v light in . All the electric is on the back of the toilets . When these are taken to site the are plugged straight into power via a surface socket on the back.
So it does have to be protected ?? Cause at the moment they have it wired straight from the power.
They have 240v going straight into the socket shown and then from there it goes into the top of the 25amp rccd. This then feeds power to the board where they loop the power into a 16 amp mcb and...