Hi, I have an older house built 1938 which has mostly 2-wire BX wiring throughout. I plan on replacing a few polarized 2-prong outlets to 3-prong... and was considering an AFCI receptacle for added safety. I read that some new construction requires this and also because my daughter uses her hair dryer and curling irons in her room I feel that I'd like the extra protection from circuit overloading / fire... with the older house wiring. The outlets I would be replacing with an AFCI are all BX wire with metal boxes. My thinking is to us an AFCI receptacle for added safety but then I was reading information that seemed to suggest there were other considerations with how the house was wired from a branch, etc. QUESTION: is it appropriate to use a AFCI in a bedroom for this purpose? QUESTION: Should I use an AFCI over a GFCI? Think I saw on this old house once where they used a GFI in a bedroom. Thanks!