1) Guest Bathroom lone receptacle is GFCI. This lone receptacle is the lead receptacle in daisy chain to 3 downstream receptacles in Master Bath. House built in 2001; builder did it this way.
Incident: Wife plugged hair dryer into the end of line receptacle in Master Bath; circuit outage occurred. The dedicated circuit breaker (labeled “Bath GFCI”) for this circuit did not appear to trip. Reset Bath GFCI circuit breaker regardless AND every other individual circuit breaker AND then the master breaker.
2) Used multimeter to test (3 times) the dedicated circuit breaker for “Bath GFCI” in the panel (in addition to every other circuit breaker in the panel) – all appear to functioning.
3) Mutlimeter shows 120V leaving the “Bath GFCI” circuit breaker for this circuit. However, no AC power to the Guest Bathroom wiring.
Special Note: Cannot locate an upstream receptacle to Guest Bathroom - we checked every other receptacle in the entire house – all are functioning (including those that are GFCI) except of course for the three receptacles in Master Bath (which are downstream to the Guest Bath for the GFCI daisy chain configuration).
Question/Issue: If proper 120v AC power is leaving the circuit breaker that is dedicated for this “Bath GFCI” circuit, why is there no AC voltage/power coming into the Guest Bath power supply/hot/lead line wiring (which ultimately feeds the Master Bath receptacles)? Note that I removed the GFCI receptacle/outlet from the Guest Bath and there is no AC power coming into the actual power supply/hot/lead line wiring. Tested with multimeter and voltage tester.
I have since put wire caps on the exposed wiring in the Guest Bathroom and shut off the circuit breaker in case the power to the line is miraculously restored by divine intervention (or an electrician). This is nuts. And thanks for any insight anyone can provide.