Hi, just wondering whether anyone can help. My electric shower is playing up so I have bought a cheap Triton one from a DIY store. Without having the knowledge to fit myself, I have a friend of a friend who will fit it for me. Problem is, I don't know whether they need any special qualifications/certification to do this. He works for a property maintenance company, says he has fitted loads and will be much cheaper than getting an electrician to do it but am I/or he doing anything illegal. I know there are certified electricians and electrical regulations but do they apply here? He had a look and said all the existing wiring is there and just needs to swap it over - is it that simple???