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Yes, 2 20' 4 prong 30 amp cords be connected to make a 40' cord.

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Q: Can 2 20' 4 prong 30 amp cords be connected to make a 40' cord?
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How do you switch a 3 prong cord to a 4 prong cord on a dryer?

A qualified electrician should make the change to a dryer connection. The best way to cheaply make the change is to change the power cord on the dryer to the three hole standard.


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Are there 3 prong to 4 prong adapters for driers?

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