Rick,
It's strange how this flicker happens every two minutes.
Could it be something like an air-con unit calling for heat or cooling and then starts?
I like your idea of voltage conditioning, but I think you need to get to the bottom of why the voltage is sagging with such a short time-frame in this installation.
It could be something as simple as a solenoid operated valve that is starting to go bad, I don't know.
With anything like this, I would suggest putting a data logger on the installation over a week or so and taking it from there, to see exactly what sort of power problem you have.
{Edit} Rick, LED lighting is terribly voltage-sensitive, it is after all based upon a diode, that has a forward voltage drop of anywhere from 600 to 750mV.
When you changed the lighting, you more than likely opened a whole can of worms and anyone that does this sort of work, needs to be aware that this could happen if the driver you install cannot handle fluctuations in voltage, it's going to be a bad day.
Last edited by Trumpy; 02/01/19 06:53 AM. Reason: Added last bit.
