It would not be a good idea to use a 240v circuit to feed a different circuit with 120v. The gfci probably would not work anyway. A gfci receptacle works by measuring the current from the hot wire to the neutral wire. This circuit would be unbalanced , therefore probably would not allow the gfci to work . If you are trying to feed a washing machine , it should be on a circuit by itself.
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220V receptacles are DEDICATED circuits, which means they service a SINGLE appliance. Loading the circuit by tapping off of it, will overlaod the branch circuit and probably cause the breaker at the service panel to trip. Overloading can also cause a potential fire hazard.
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