GlennWest Posted May 3 Report Share Posted May 3 (edited) When I hooked up my shore power to my inverters, I installed this surge guard. It works just fine. But just this week it has started making a noisy. It comes and goes. It almost sounds like a bus coming and going. It will quit after while. It has done this twice so far. Just this morning went out and found what it was. Have display inside and no faults or anything. Can a relay make this noise. like it internally vibrate for a short time Edited May 3 by GlennWest Quote Link to comment Share on other sites More sharing options...
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