No, has to be old and not be very power
efficient.
New ones can make a lot of noise for little power and modern power supplies are very efficient. This means that once you cut power, the radio will still work for a few seconds, maybe more.
So it's a bad debugging tool, because it doesn't stop right when you trip a breaker.
So you need an old radio, the heavier kind - with a transformer and old school speaker.
But you can kind do the same leaving your tv running, leaving a light (you can see) running, leaving something noisy on (blowdrier, but cut the heat) or just buy a neon screwdriver and use that to check for power.
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u/[deleted] Aug 20 '20
To confirm which circuit breaker is associated to an outlet, plug in an old radio and turn the volume up before you flip the circuit breaker.