Forum Discussion
dougrainer
Jun 04, 2017Nomad
Mandalay Parr wrote:KD4UPL wrote:
I totally disagree that plugging into a 20A outlet destroyed your transfer switch.
Even so, you may need to replace the switch. I once had a 50 amp ATS made by Power Max go bad. Same problem, the contactor coils wouldn't pull the switch, they just hummed. This particular unit used DC coils so that when engaged they wouldn't hum. The rectifier circuit in the switch was only delivering about 70 volts DC instead of the 100 volts the coils required. The manufacturer couldn't provide a replacement. The switch was fairly inexpensive so it was just replaced.
Have you measured the voltage going to your coils? Does it meet the specification they require?
I agree.
Plugging in did NOT destroy the box. Using a 20 amp supply when the poster was using MORE amps than supply destroyed the box. The heat build up and the drop in 120 current supply combined to destroy the box electronics. I should have clarified my first post. Doug
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