loud noisy humm in transfer switch
My transfer switch has had a loud humm to it since new--in fact was replaced under warranty once to no avail. Unfortunately it sits near our bed, so it's bothersome at night. my RV tech says I cou...
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MarkieBob wrote:
My transfer switch has had a loud humm to it since new--in fact was replaced under warranty once to no avail. Unfortunately it sits near our bed, so it's bothersome at night.
That's AC relay hum. I replaced my transfer switch with one that uses DC relays (no hum).
