[oasisbob]

I'm not sure if it's a full standard (eg UL), or an informal one, but one reason you might not want detachable cords on kitchen appliances is because the cords are intentionally short to avoid dangerous accidents. If cords are swappable, you lose this property.

There have been enough Crockpots and similar kitchen appliances pulled down by children onto themselves that it's driven two trends in the American kitchen:

- Short power cords, to avoid cords being accessible from below

- Placement of power outlets: to ensure there are enough to be used with the short cords and not tempt extension cord usage, and to keep outlets and cords plugged into them inaccessable.

There's a lot of tension in that last one, and the NEC has gone back and forth on how to regulate outlet placement, eg on kitchen islands, and where they should be allowed to go.