I have a Leviton 7299-NW GFCI/switch combo
The diagrams in a response to the question "How do I wire a GFCI/switch combo?" is helpful. But I want to see a diagram for a situation where the power enters at the light and the device is wired so that the light is ground fault protected. Provided the cable between the light and the device is a 14/3 (with red wire), I would also need to be able to do the following:
The white wire in the cable from the breaker box which runs to the light box would have to be pigtailed together in the light box with the light's white wire and the returning white wire that runs in the cable between the light and the device. At the device end, the white line wire would have to be pigtailed in with the LINE white-silver neutral screw and the LOAD white-silver neutral screw. So that one white neutral wire is shared by the line and load of the GFCI/switch. Is this permissible?
Simply put: How can I wire the device, GFCI/switch, to ground fault protect light if the power enters at the light?