I'm just want to confirm I'm on the right track. I am rewiring a 6 arm chandelier. Am I correct that the acceptable wires to run through each arm is found in NEC code 402.3? Theses 6 wires will then be connected to one wire that runs up the fixture, through the chain, with that acceptable wire found in NEC code 400.4? If I purchase two types of wire, is there any compatibility issues? Any suggestions on how to remove old sockets from nipples would also be greatly appreciated.