Not mine, but Googled one that looks the same for the electricity: https://i.pinimg.com/originals/69/f9/18/69f9183fd01faa4f31ebd8c4f1dd3806.jpg https://i.pinimg

Not mine, but Googled one that looks the same for the electricity: https://i.pinimg.com/originals/69/f9/18/69f9183fd01faa4f31ebd8c4f1dd3806.jpg https://i.pinimg.com/originals/69/f9/18/69f9183fd01faa4f31eb... The things like L1 and J4 etc indicate which switches are connected to each light fixture (the number matches) and on which breaker (the character) they're connected. Similar for construction, a plan for where all the walls are, which ones are load bearing and which are not etc.