This kind of knowledge is useful in case of emergency as well as to save money. For instance, the faucet breaks while you’re washing the dishes, and the water sprays everywhere. If you don’t know how to turn it off, get a boat ready and prepare to wait for the plumber to come. And when it’s all done with the pipes, you’ll still have to do something with all the electrical appliances in the kitchen that have been covered with water. Here’s where electrician skills would come in handy.