I'm setting up a project lamp for my workbench using one of these
I checked for continuity while doing a test setup, the live and neutral connectors are isolated from each other, and the backplane.
However, when I powered on the light and started probing around to test for shorts I found that my meter is reading about 44V AC between the backplane of the LED COB and ground.
The LED COB is attached to a heatsink with a thermal pad between them, then on the rear is a 12v fan.
The light and fan work as expected when powered, and if I connect a ground wire to the heatsink the breaker does not get tripped, so it should still be isolated correctly.
But why does my meter read it at 44V AC? Is there some sort of EMF that these lights emit?