Barnie said:The insulation tests are fine, the ring main doesnt trip, the lights are on a seperate breaker, i havent checked the polarity of all lights will do when i return but what i dont understand is that there are two circuits in one 6A breaker which isnt a problem as there are only 8 lights but even whe i try the circuits seperate, and try to put a lamp in they still trip. any advice would really help
Have you tried splitting the 2 circuits to narrow the fault down?