Considering a rewire in the future and want to figure out which outlets (and ideally fixtures) are knob and tube. I know many are, some are not. Probably all 2 prong outlets are k&t, possible some 3 prongs are as well.
Is this best done with a multimeter, an outlet tester or something else? What are the steps then? Thanks!
Best Answer
There is no electrical or technical way to tell if a box is wired with K & T. You'd get the same results with old non-grounding NM cable.
The only way is visual. You'd have to open each box and check with your eyes.