I do not think we should have an adversary relationship with the contractors. We are partners in the effort to make a safe installation. Most of the time I do try to have a good explanation of why the code says what it does but I admit I am at a loss on this "insulated neutral" thing. I always thought it was a corrosion issue. I do understand why they keep a "belt and suspenders" approach to swimming pools. Water, electricity and semi naked people, lots of things can go wrong.
