Some lights and switches don’t get used regularly – maybe a spare room, balcony, loft or outside light. If a switch stops working or a fitting gets damaged, you might not notice for months because no one turns it on.
By occasionally walking through and quickly flipping each switch, you confirm that everything functions as it should. If something doesn’t work, you can decide whether it’s just a bulb or something deeper, like wiring or a faulty fitting.
It’s easier to deal with electrical issues calmly, during the day, than to discover a problem in an emergency or when guests arrive and you suddenly realise a key light doesn’t work.
It’s a simple check that keeps you aware of the real state of your electrical system, not just the parts you use daily.
