If you think you wont make a mistake, that is your first big mistake. Being an electrician means that without a doubt at some point you will experience an electric shock. Safe isolation is just part of the strategy to staying alive. We wear thick rubber soled boots and use fibre glass ladders to increase resistance to a point that if or should I say when we get a shock it is sufficiently high to mitigate the fatal aspect of that shock. We never come in out of the rain and start on electrics 'til we are dried out. Working on a rig at 230v imho is an invitation to get a shock. Your strategy then would be to use a xformer to limit the voltage to 55v (it is centre tapped!) in the event of a shock. If you are not thinking like this (being OCD safe!) you would not be working with me for a start, you must take safety very seriously. Further you may well be working on your own if you do come to grief (God forbid) there will be no one there to assist or remove you with a large lump of wood by hitting you with it, so safety first I would say, but that may be a bit over the top for some. For me, I aint taking no chances neither should you. Oh and if you do need help with a large lump of wood in case of shock, happy to help