Why Grounding Your Dryer is Important

Posted by Stephanie Junek on

Did you know some dryer plugs are 3-prong and others are 4-prong?  Have you wondered why this is or have you had trouble connecting your dryer to your home electrical dryer outlet because they don’t match?

NEMA 10-30R outlet

The old style of 3-prong dryer cords did not include a ground wire.  Changes in the National Electrical Code now require dryers to be wired with a ground wire.  This means the cords now have 4-prong plugs.  There are some cases where you cannot plug your dryer into your receptacle.  This is because you may have an old dryer and a new construction home or a new dryer and an old home. 

NEMA 14-30R outlet

AC WORKS™ brand residential collection contains a few options for you to adapt to the current outlet you have in your home, meaning you won’t have to hire an electrician to re-wire your outlets. 

When using an old 3-prong cord, the neutral wire had to be tied to the ground connection on the case of your dryer, which is metal.  When converting with a 4-prong adapter it is important to make sure the neutral terminal is not connected to the ground case. 

Make sure you are correctly connected before you plug your dryer in.  There are many things that can go wrong with a dryer that has been incorrectly ground.  For example, your hot wire could cause your dryer to become live, causing electrocution or shock to anyone who touches it. 

The 4-prong cords contain two hot wires, a neutral, and a ground wire.  This provides a safe path for any current traveling to the machine to be re-routed and avoiding danger. 

We have a variety of dryer adapter types to find solutions allowing you to convert a 3-prong to a 4-prong or vice versa. 


AD14301030 Dryer Adapter by AC WORKS™


S10301430-018 Dryer Adapter by AC WORKS™


S14301030-018 Dryer Adapter by AC WORKS™

If you have any questions about how to convert or properly hook your dryer up to your current outlet contact our sales engineers for solutions.  info@acconnectors.com We are happy to help find the solution to work best with your existing hookups and teach you how to install them properly and safely. 

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  • 4 prong in place of 3 prong , where do I put my ground wire?

    steve cocanour on
  • Hello Kyle. If there may have been heat back there, you may want to get the dryer itself checked out, too. How old is your dryer? The wire from the old plug could have been bad, too. That would mean you would need to replace the cord on your dryer.

    Christopher on
  • dryer stop drying. open up the back and I notice the black wire from the plug, the black wire part that connects to dryer is severed. looks like the was heat there . do I replace the cable cause it was bad?

    kyle on
  • Hello James. You can follow the different ways to ground your connection outlined in this video: https://youtu.be/gpvFU8QJcus

    Christopher on
  • I’m about to purchase a 4 prong to 3 prong outlet adapter for my dryer. Where do I put the ground wire?

    james on

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