EPAC-EPIC-MARC wrote:My relays don't hum unless there is no load connected to them. I pulled a relay out for this reason. Do you have relays in for phases that aren't being used?
For example if your only running 2 or 3 switchpacks and have 6 relays installed in that could cause some vibration
Nah - that was part of the thing - everything is *dead* silent normally. The vibration was so slight that I couldn't feel it, but could hear it amplified through the metal parts on the unused controller. :)
Otherwise, you can't heat a hum from them.(*)
(*) Usually - occasionally I have noticed, while workign in teh basement, a hum will start, grow in intensity over 5 seconds or so, and then fade back to silence, again over 5 seconds or so. Happens very very rarely, and I havent' worried about it.
Your comment about using switchpacks (load switches) did make me wonder, tho - I still have problems with my flashers. I have a 16-phase backpanel, which has two sockets for flashers. With one in, it works fine. However, with a second one in, the flashing goes horribly erratic. I'm wondering now if that's because I don't have ENOUGH signals connected up..! (I'm pretty confident it's NOT the flashers, as I've tried all the possible combinations with 5 different flashers, of different makes and models.)
-Me.
