The homeowner called us out as the lighting circuit had tripped the main RCD leaving them without power.
The root cause was shown to be that a “family friend” that completed the wiring in the new extension, had installed the halogen spotlights incorrectly.
Best case = a tripped RCD, worst case = house fire
If you note the damage to the wiring in the photograph, the heat was so intense that;
- The outer sheath and insulation of both of the live conductors became brittle, so any movement will expose conductors, and;
- The strip connectors (which are not to be used outside of a junction box and are not maintenance free) had actually melted.