I have spent time charting out all the lights, outlets, etc. in our house and what breaker they are each on.
I know that most of the original part of our house in knob and tube and the early 90's addition is romex. Looking at my list I can see that a few breakers are most likely mixed, part K&T and part romex.
I believe each fixture/outlet could be:
- Knob and tube from the outlet all the way back to the breaker box.
- Knob and tube at the outlet, but changing to romex somewhere before the breaker.
- Romex from the outlet all the way back to the breaker box.
- Romex at the outlet, but changing to knob and tube somewhere before the breaker.
I could take off the outlet covers/lights to determine the first part visaully though that will be time consuming. Could I also use an outlet tester to determine if there a ground, with no ground meaning K&T at some point and a ground meaning Romex the whole way back to the breaker? Then do for each on the breaker to figure out what part is first/second?