I have five GFCIs in my house. Two are functioning and three are not (read: no power on these three). I suspect the three non-functioning outlets are on the same circuit and the first of these three on the circuit is bad. How do I test these to see which is bad and what equipment do I need to use? I have a multimeter, a receptacle tester, and a "hot" tester (single prong that inserts into one outlet slot and shows if it is receiving power).
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