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3

The ac going to the transformer doesn’t matter because the low voltage on the other side is isolated. However there are several issues as I see it The high voltage between the transformer and metal box the wires are not in flex or rated for being in the open not a big deal but a code violation. Next with the transformer not mounted to the metal it is not ...


8

The best way to eliminate transformer noise is to purchase a quality transformer. The noise is because the laminated core is heavily loaded or overloaded and the plates are actually vibrating because of eddy currents. I can’t quite make out the size, but it looks like 24V, 20VA. I would bump it up to a 24V, 40VA unit that would be compatible with video ...


5

First, even though the exposed wires are low-voltage, likely 16 VAC, they should be covered for esthetics (if the transformer were accessible to children, not inside a closet, it is likely required). That said, the buzzing noise is likely being transmitted to the metal plate and wall, which make it much louder. A few things to reduce the buzz: Remove the ...


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