If you are doing service upgrades and you are putting in ark faults and making money at that then I like it. You should be making money, and I like ark fault breakers. That said, the code does not require ark faults on service changes, the 2005 code requires ark fault protection for the branch circuit when installing 120 volt 15 and 20 amp outlets in bedrooms of dwellings. When you are doing a service upgrade and you are not installing 15 and 20 amp 120 volt outlets in bedrooms of dwellings, than the ark fault requirement should not be applied to you, unless your area has an ammendment to the code that requires ark fault breakers on service changouts. If your local electrical inspector requires it, you should ask him for a code reference, unless you like installing and upselling the customer as the original poster does. Again, I myself like that style, but I personally stop short of trying to sell the value of ark fault breakers to customers because of the potential of liability of a series ark not interrupted and an ensuing fire is the result.
