Purchased a place and we are re-wiring the bathroom and putting in a standing shower. The bathroom is quite small so there is just enough room for this. There is a dedicated circuit, a round box above the medicine cabinet for a bar light, and a shower fan+light above the shower rough-in. They are both fed from a box near the sink which contains a double switch and a GFI outlet. The top of the double switch will control the vanity light, and the bottom will control the fan+light.
I was told that it is illegal [in PA] to wire the shower fan+light using power tapped from the GFI outlet. Is this true? Essentially, if the bath fan+light were to short [water] it would trip the GFI found near the sink....or vice versa if the GFI outlet is tripped from water [hair dryer]. Since the vanity light would not be behind the GFI, it would stay on if a trip occurred....or i could wire that GFI too if needed.
If this is illegal, is there an alternate way to protect the fan with GFI without running ~30 feet more wire to a GFI breaker? This seems extremely overkill to run all that for just a bath fan that is already designed to function in a steamy environment tapped from a GFI that is already there. Thanks.