Joe,
110.2 does not apply to instllation methods, it only applies to the items being installed. While you are correct that it is a little safer if you connect the EGC to the switch yoke. The NEC clearly does not require this when there is a metallic box.
(B) Grounding. Snap switches, including dimmer and similar control switches, shall be effectively grounded and shall provide a means to ground metal faceplates, whether or not a metal faceplate is installed. Snap switches shall be considered effectively grounded if either of the following conditions is met.
(1) The switch is mounted with metal screws to a metal box or to a nonmetallic box with integral means for grounding devices.
(2) An equipment grounding conductor or equipment bonding jumper is connected to an equipment grounding termination of the snap switch.
The ground screw is provided so that this section can be complied with when the switch is installed in a non metallic box.
Don(resqcapt19)
[This message has been edited by resqcapt19 (edited 04-29-2002).]
