Have you ever wondered whether your job was a good one or a bad one. The job looks OK, but your not really sure. It was cheap, so is that OK? It works, and it seems OK, but is it really?
Main switches are often overlooked by electricians, but there are serious consequences if they are.
I often tell my clients that they require other works done at their premises in order to make simple additions. Why is that? Am I just ripping my customers off, asking them to do things they don't need?