That still leaves open the question of lightning or other external problems.
Plug washer and dryer into surge protector.
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Historically washers and dryers had very simple.
An appliance surge protector is a device that protects home appliances like refrigerators washing machines and dryers from unwanted power surges.
Due to the size and shape of the surge protector the second outlet on wall plugs cannot be used unless using a two pronged connector.
Other than the shape issue the surge protector works as described.
This way the surge protectors won t be overloaded.
As a general rule the protection from a surge protector is primarily for sensitive electronics.
If the 20a circuit is overloaded then the circuit breaker will trip and you ll learn how to avoid it.
Why not get two surge protectors one for the washer and one for the dryer and plug one into each outlet.
The surge protector casing needs to be stream lined to allow a second three pronged connector to be plugged into wall outlet.