I trained as a electrician in the 70s but have long since retired. Just had an EICR test done on my property in advance of selling. I have a 60s Bungalow that originally had wire fuses. I replaced them with MCBs 10 years ago. Assessor gave me a C3, is that reasonable? I got a C3 on the Lighting circuits due to no earth and a class 1 appliance. If I change it to a class 2 appliance should that become a C3?