The ground pin of the swamp cooler water pump A/C plug pulled out when I unplugged it to lubricate it for the summer so I have to buy a replacement plug. Being cheap, I deeply regret this expense.
My reason for posting: Why would this pump need a ground? It's plastic covered so no personal shock danger. Probably because it operates in such a wet environment. But still, what is it protecting? I'm stupid, obviously.
TIA