Like you and I have discussed before John the Code seems to be getting less grounded in common sense.
Like the requirement for a seperate circuit for a range hood that is cord and plug connected, but not if hard wired. Or how many times is a breaker lockout really needed so when you change out a dishwasher no one turns on the breaker. Even the builders grade model in my townhouse lasted 15 years. I moved before it needed to be replaced. Is a lockout required for those electric hand dryers in the restrooms? I would think they get changed more than a dishwasher.
There are some that have changed during the recent Code cycles like where only grade level receptacles needed GFI protection and balconies didn't. I guess people never went outside after a rainstorm to listen to a radio.
Try finding a pool filter with a twist-lock plug from the manufacturer. I doubt you will, but that is what the Code calls for. Do you cut off the cord end to install the twist-lock and remove the UL listing?
