I drilled diagonally between a socket and a switch to hang a shelf: an electrician showed me I’d missed the one rule that keeps cables safe
You thought drilling diagonally between a socket and switch was a harmless shortcut to hang a shelf. An electrician revealed the critical safety rule you’d violated: British electrical standards require all cables to run in predictable straight lines—up, down, left, or right—never diagonally. This regulation exists for one reason: to protect people like you from accidentally severing a live cable.