Newer homes have 240V outlets that accept four-prong plugs.
Older homes tend to have 240V outlets that only accept three-prong plugs.
What’s the difference and can you convert from one to the other?
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What Is a Three-Slot Dryer Outlet?
Before 1996, 240V clothes dryers had three-prong cords that plugged into three-prong 240V outlets.
The ground was bonded to the neutral connection.
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One wire served both functionsas the neutral current pathway and as the grounding pathway.
In rare circumstances, there is a very small chance of shock with this configuration.
Tip
Homeowners aren’t required to stop using or convert existing three-slot dryer outlets.
Always check with your local permitting agency, though.
What Is a Four-Slot Dryer Outlet?
When to Choose a Four-Slot Outlet or Three-Slot Outlet
Converting a Dryer Cord vs. A 240V outlet will have four large slots (or three large slots, with older outlets).
A 120V outlet will have three small slots.
Most dryers cannot use a regular outlet.
Due to the high power demands, electric dryers need 240V outlets.
A gas dryer needs a 120V outlet, and an electric dryer needs a 240V outlet.
