Yep.... It hums...
Just got done installing the Progressive industries hardwired 30amp unit... luckily I installed it in the electrical bay. When I first plugged it in, it was silent. I went into the rv and turned on...
Forum Discussion
bob213 wrote:
I think it was "Soundguy" who posted that that he remounted his into a plastic tool box or the like and got rid of the hum. Hopefully he will post here.
Progressive bolted the contactor directly to the box in which it's mounted so when it vibrates that vibration is transmitted into the plastic box and is amplified. The solution is to isolate the contactor from the box but with the parts jammed tightly into the box there's really insufficient room so I ditched the Progressive box and mounted the parts in a plastic tool box. My EMS sat under the sofa so it was clearly audible but isolating the contactor solved this issue entirely. A series of pics starts here.
