We have several old style mercury vapor fixtures like this installed under a soffit (this one hanging out so I could take a picture of it): [url]http://i207.photobucket.com/albums/bb153/sgull1/IMG_1427.jpg[/url] Two questions: 1. I tried replacing a burned-out bulb inside one of these fixtures, the burned-out one being a Philips 100W H38HT, with a new Philips 100W C100S54/ALTO that has also has the symbol Hg printed on the bulb with a circle around it. I am unsure whether the replacement bulb is the proper replacement, but I suppose it isn't because it won't work in the fixture. If the replacement bulb has the Hg symbol doesn't that mean it's a mercury vapor bulb that should work? (Apparently the replacement bulb is a high pressure sodium type, but if so why does it have that Hg symbol on it, I don't get it?) 2. I was reading the following in WikiPedia about mercury bulbs: "In the USA, ballasts and fixtures were banned in 2008. Because of this, several manufacturers have begun selling Compact Fluorescent replacement bulbs for mercury vapor fixtures, which do not require modifications to the existing fixture." I'd be interested in finding/obtaining such compact fluorescent bulbs that could possibly work in these old fixtures. Would these type of replacements simply work in these fixtures, even if the ballasts/transformers were shot. Is it really true I could just use the CF bulbs with no modifications to the existing fixture. Any answers/comments appreciated.

Hi All I'm re-wiring my house and want to have a neutral in each light switch box (I seem to recall it being a 2011 code requirement too). The main reason is that I'm installing z-wave scene controllers that require neutrals. I'm having problems figuring out how to wire the 3-ways so that the neutral is present in both. Would I just simply run a separate neutral from the master to the slave? Regards mark