Hi Everyone, I have seen all the rules about conduit sizing and the # of conductors allowed but I have not been able to locate guidelines on when conduit is needed. I am rewiring my house from scratch and will be installing a 100amp sub-panel. The supply for the sub-panel will run through the attic. Do I need to use conduit? Does it matter if it is EMT or plastic/PVC? Thanks, Victor

I'm installing new light fixtures in the kitchen, replacing old fluorescent lights (the shop looking kind) with new incandescent lighting. When I disconnected the fluorescent fixture, there are now just two wires coming out of the ceiling, no box; just a black and white wire wrapped in a metal sheath (I think it's called BX wire) anyways my questions are: 1) Is it safe to use the BX wire to connect new lights? 2) I will have to install a ceiling box, does it matter what type? Medal, plastic, etc.) 3) What do I do with the green ground wire that comes on the fixture since I do not have a ground wire?