rcd testing

[palmerelectrcal]

relating to testing RCD for effectivness etc....and recording dataAon certificaten site guide says "remove supplied load" before testing (using megga1720 tester) as the main switch is the rcd....do i need to discon every cct on the mcbs prior to testing? whipping out the bus bar maybe?
not so bad with only a few ccts but when theres 2 c/us and 20+ ccts?:coolgleamA:

 

[malcolmsanford]

You turn off the MCBs in the 2 CUs ...............................

 

[nicsin02]

yeah mate just make sure all mcb's are off