30/08/2026
A weekend call-out for an RCD that had been intermittently tripping—sometimes constantly, while at other times it would hold for hours. Even wet weather didn’t seem to follow any obvious pattern. ⚡️
After investigating the downstairs lighting circuit, the cause soon became clearer. We found a mixture of 1.5mm² and 2.5mm² conductors, poorly secured cables that fell out as soon as the downlights were removed, and—best of all—the circuit protective conductor being used as a neutral, identified only with black tape! 🤷🏻♂️🤦🏻♂️
I ended up working through almost the entire lighting circuit, correcting the faults and making the connections safe. It took some careful fault-finding, but we got there in the end and left the customer with a safe, reliable circuit. 👍🏻
Another reminder that intermittent electrical faults rarely fix themselves—and sometimes what’s hidden above the ceiling is quite an eye-opener!