Thanks Wally,
First time I have encountered a Crabtree unit for certification to meet 17th Edition, you would think that they would supply a conversion kit for their existing units. WYLEX are much easier to convert.
Have any Electricians encountered problems converting a Crabtree Consumer unit to meet the 17th Edition.
seems that all their rcbo's are type C and their split boards only take 1 RCD on the split Bus bar.