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Converting 4 prong dryer cord to 3 prong

Posted by seano815 (My Page) on
Wed, Jun 23, 10 at 13:21

I need to install a 3 cord electric dryer cord on a machine that had a 4 prong cord as my new outlet is only a 3 prong and I don't have the $$ to upgrade to a 4 prong outlet at this time. In all of the articles I see written about this conversion there is a "terminal" where the wires connect. This is not the case on this machine. The 4-plug wires were connected to the machine wires by male/female metal connectors sheathed in plastic. I will connect the black wire to black wire and red wire to red wire. As for the white wires, do i simply make a connection between these 2 and then ground this connection to the frame of the machine? Also, what do I do w/ the green wire that's left in the machine now?
Thanks


Follow-Up Postings:

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RE: Converting 4 prong dryer cord to 3 prong

The installation instructions for the dryer have the correct connections.

In a 3-wire installation the ground and neutral are bonded in the machine with a jumper that is removed for a 4-wire hookup.

Put the bonding jumper back in.


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RE: Converting 4 prong dryer cord to 3 prong

The machine is pretty old so I don't have any installation instructions. I appreciate your response but don't know squat about bonded jumpers, etc. So, just to keep things simple for me, for the white wires, do i simply make a connection between these 2 and then ground this connection to the frame of the machine? Also, what do I do w/ the green wire that's left in the machine now?
Thanks


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RE: Converting 4 prong dryer cord to 3 prong

Connect the green and white of the machine to the incoming white. That will give you your bonding jumper.

Normally there is a terminal block with H H N and a clip that will bond the frame to the neutral on a 3 wire setup.


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RE: Converting 4 prong dryer cord to 3 prong

The green is the ground for the machine. Tie the whites and the green together (3 wires).


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RE: Converting 4 prong dryer cord to 3 prong

Thanks alot everyone!!


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