These 18" receptacles are not on one, or two circuits, wired in parallel. Now, if every receptacle was required to be isolated, your explanation would make sen

These 18" receptacles are not on one, or two circuits, wired in parallel. Now, if every receptacle was required to be isolated, your explanation would make sense. Use to be a union 6 member. The code might now call for every receptacle to have it's own circuit breaker. It wouldn't surprise me.