S

sinaloan

hi there i am filling in a minor works cert and in part 2 it asks for 'overcurrent protective device for the modified circuit' and 'residual current device'. i have a split load board with one rcd on it. the work has been carried out on a ring circuit on the rcd side so i assume i put in the rcd box i fill in the rcds details? in the 'overcurrent protective device for the modified circuit' box do i put in the mains switch bs number 60947-3 or do i put in the main fuse bs number 1361?
 
when i do the testing on my fuseboard i take it i cant pull the main fuse then? do i just turn the mains switch off to turn it off and start testing or take the tails out of the meter? how fussy will the nic inspector be
 
Just putting the rated current of the main fuse is wrong (well assuming the circuits load was designed correctly ;)). There are some "rules of thumb" that are often used. I'd suggest going though the exercise of doing it by the OSG though, coz it's useful to have that off the top of your head as well.
 
when i do the testing on my fuseboard i take it i cant pull the main fuse then? do i just turn the mains switch off to turn it off and start testing or take the tails out of the meter? how fussy will the nic inspector be

No, you can't pull the main fuse (it'll be sealed anyway). You turn the main switch off then perform a safe isolation to prove that your circuits are dead.
 

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