Installed ferrite cores onto the live and neutral cables making a buzzing noise?

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If there is a buzzing noise then it suggests that some harmonics may be present on the mains supply
 
I have never seen ferrites on meter tails before, did you see the croc clip earth on the faraday cage as well, I smell a conspiracy theory going on here😀.
Nice bit of bending work on the faraday cage though.
 
Regardless of the reason for installing, a ferrite ring has to be chosen for current so it doesn't saturate. Overloaded bead will have harmonics in the magnetism and buzz even if the current is pure 50 Hz.
 
Regardless of the reason for installing, a ferrite ring has to be chosen for current so it doesn't saturate. Overloaded bead will have harmonics in the magnetism and buzz even if the current is pure 50 Hz.
That's interesting.

Any such things I've ever seen have both cables running through it, so can a single ring on a single cable actually make any difference?
 
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