Replace fuse box with RCD consumer unit
I am planning to change an old fuse box in the house and have the newer RCD consumer unit fitted by a qualified sparky. Can anyone offer me any advice, let me know what to watch out for, the good and the bad.
Having spoken to one or two people with these units, it seems a bulb blowing can trip out the whole circuit (resulting in a blackout) or a heavy wattage item like an iron or a cooker can trip the RCD. Are they really worth having?