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I'm considering an appliance that is 240v 16A 3500watt with a NEMA 6-20P plug. Is it possible and safe to create an adapter for this so that it can be plugged into a standard 4-prong 14-30R dryer outlet? The adapter would be a typical 4-prong dryer cord with a NEMA 6-20R receptacle.
Would this b...