- Reaction score
- 29
After installing a new consumer unit, both rcds were tripping out. I had a hunt around for the problem and quickly found a link between the first floor lights and the ground floor lights. Seems the hallway ground floor light had a link from its common terminal to the common terminal of the other gang of the 2 gang light switch. A two core cable then went upstairs to the landing light switch marked first floor light. IR tested upstairs lights L/N to earth quite low 4.89 downstairs IR L/N to earth 18.79. Presumed the imbalance of current to two different neutral bars were causing the rcds to trip.