Well I have decided to get a split load consumer unit for my requirements. But there are 2 options as far as I can see a dual RCD or a simple RCD + Non-RCD bus. I havent found any of the dual RCD i.e 100mA + 30mA. This is a fairly attractive proposition as I like the idea of still having some protection on the less critical parts. Are these dual RCD units connected... 100A/100mA RCD -> Bus 1 -> 80A/30mA RCD -> Bus 2 or 100A/100mA RCD -> Bus 1 80A/30mA RCD -> Bus 2 Who does these consumer units ? I havent seen any in Screwfix or TLC ?