There comes a time when you will find yourself frustrated at how an electrician you hired broke your appliance and wiring even more. He is also insured. They may have a long list of unsatisfied clients. They may even have been stealing by replacing quality parts of your gadgets or appliances with fake ones. It can be tricky to hire one that is credible but it's not impossible. It's not rude to ask for credentials. It is best for you to hire an electrician with a credible background even if their service-charge is high.