Redsy I understand where you are comming from. I personally would install a new branch cir as required. Prior to the code change for the new bath cir, when I priced a service change I would upgrade 4/w range,dryer ect and bring everthing up to code.Most would only change panel only, and according to adj that is all we would have to do. But on the other hand use empirical judgement.And according to the Current Code.I know most people are concern with the cost,We are concerned with the safety as well as abiding by the code. Which is a set of principles that we All Electricans should or must follow to promote safety to everyone.
Wayne
