I agree with the new requirement for having separate ground and neutral connections. One problem that I am seeing though is that the ranges and dryers still come from the factory with the neutral bonded to the frame and many people will install the 4 wire cord with out removing the jumper. This is not a problem if the circuit comes from the main service panel but if its coming from a sub panel you will end up with a parallel neutral path for all of the circuits in the sub panel. I guess since most of the ranges and dryers are being installed in existing installations its better to depend on the installer to remove it for a new installation then depend on the installer to install a jumper for an existing installation. Another idea would be for the factory to install 4 wire cords on all ranges and dryers and then sell an adapter to use it on a 3 wire receptacle.
