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Terminal Block installation for Tappan Dryer

Need help with installing a terminal block for my tappan dryer. I got the part, but no instructions or guide on how to make sure I have the connections right.

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To connect your dryer you must place the black and red wires one on the left and one on the right terminals.
The white wire is called the neutral and needs to be connected to the middle terminal.
The ground (green or bare white) needs to be connected to the ground terminal or lug which will be away from the other three wire terminals.
BE SURE TO TURN OFF THE POWER.
The wires coming from the dryer go to the hot wires inside the machine.
If you trace them by removing the covers, you will see the two hot wires that connect to the black and red wires from your power source, go to hot terminals in the dryer.
Does not matter which one goes to black and which goes to red.
They should be the outside two on the terminal block.
The neutral (white wire from the power source) goes to ground (chassis) inside of the machine.

Posted on Apr 30, 2008

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Yes, an electric dryer requires 220VAC in order to heat.

I would recommend you begin by unplugging the dryer and verifying the voltage at the wall receptacle. You should read 220-240VAC across the two Hot terminals (left and right slots). IMPORTANT: If the voltage is incorrect, check to make sure you don't have a breaker tripped. Some homes use 2 separate 120VAC breakers to provide power to the receptacle vice using one 240VAC breaker.

If the voltage IS correct, leave the dryer unplugged and remove the cover plate on the terminal block in the back of the dryer (this is where the power cord is installed). Plug the dryer back in and take a voltage reading across the two hot (RED and BLACK) wires at the terminal block. You should read 220-240VAC. If the voltage is good at the terminal block with the dryer plugged in, you have an internal electrical problem. If the voltage is bad at the terminal block, but good at the receptacle, you have a bad power cord. Replacement power cords can be purchased at any hardware store for about $20.

NOTE: If the wires at the terminal block are not color coded, the outer two wires (left and right) are the hot leads. The center conductor is neutral or ground.

The reason a dryer will still run if the input voltage is incorrect, is because the drive motor only uses a portion of the 220 service. The motor runs off 110-120VAC, which is tapped off the input voltage. The heating circuits require the full 220-240VAC in order to work. So, if you are missing 1/2 your input voltage due to a tripped breaker or bad power cord, your dryer will run, but won't heat.

Perform these steps and post back and let me know if you need further assistance. I hope this helps you.

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The following link explains how to correctly install a power cord on your appliance:

http://www.fixya.com/support/r3575913-installing_a_220_vac_appliance_cord

The main difference is how the Neutral (WHITE) wire and Ground (GREEN or BARE COPPER) wire are terminated on the terminal block in the back of the dryer:

- In a 3-wire configuration, these two wires are connected together via a ground ******** the terminal block.

- In a 4-wire configuration these two wires are independent of each other are NOT terminated together. Neutral is terminated at the terminal block and ground is terminated to theequipment cabinet via a ground lug.

NOTE: Newer homes built after the year 2000 REQUIRE a 4-wire configuration to be in complaince with the National Electric Code. In addition, some newer appliances may not work correctly without a 4-wire power cord. You want to refer back to your installation instructs to verify your power requirements.

If you have any questions, please let me know. I hope this helps you.

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If you are installing a 3 prong cord , then the 2 outer wires , are the power lines , and the center is the neutral . On the dryer , the center wire connects to the white wire on the terminal block . The 2 outer cord wires . 1 connects to the black wire terminal on the block ( outside terminal ) , and the other outside wire , connects to the red ( outside terminal ) on the block . Its the same if you are installing a 4 wire cord , except the green , connects to the ground screw on the dryer itself .

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The following link explains how to correctly install a power cord to the terminal block of a dryer:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

Take note of the difference between a 4-wire and 3-wire configuration. The color codes for both installations are as follows:

RED - HOT (120 VAC)
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The main difference between the two configurations is how the Neutral wire and Ground wire is installed.

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In a 4-wire configuration ground and neutral are INDEPENDENT of each other. Neutral is terminated at the terminal block, while ground is terminated on a ground lug on the equipment cabinet.

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If your dryer is different from the one described above and would like a second opinion on your connections, email a picture of the terminal block to info at ezdiyelectricity dot com. I will post the pictures on this page to help others with the same dryer.

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