1. Shut Off the Power. …
  2. Remove the Dryer’s Electrical Connection Cover. …
  3. Detach the Electrical Cord. …
  4. Jumper the Neutral to the Ground. …
  5. Connect the Three-Prong Cord. …
  6. Install the New Strain-Relief Clamp. …
  7. Plug in the Dryer.

How do you hook up a 4 prong dryer cord to a 3 prong dryer?


  1. Remove Coverplate for Electrical Connections. …
  2. Remove the Strain-Relief Fitting. …
  3. Disconnect the Old Cord. …
  4. Separate the Dryer’s Neutral From the Ground. …
  5. Connect the New 4-Prong Cord. …
  6. Attach the Strain-Relief Fitting to the New Cord. …
  7. Reinstall the Dryer’s Electrical Cover Plate.

Can you wire a 4 prong dryer outlet with 3 wires?

In an existing installation (such as an older home built in the 1950s), it is considered Code-compliant for the kitchen range or the clothes dryer to be installed using a 3-wire cord and plug.

Can you change a dryer plug from 3 prong to 4 prong?

Answer: You don’t. It is not possible to install a four prong outlet using only three wires either legally or safely. Put the three prong outlet back and install a new three-prong cord on the dryer.

Can you use a 4 prong to 3 prong adapter?

If you were to change from a four prong to a three prong and your dryer is designed to use 120 volts at some point, then that current will have to be returned on the ground leg. This is not acceptable by NEC code, nor is it safe.

How do you wire a 4-wire plug to a 3 wire?

Connect the ground wire of the 3-wire cable to the ground wire of the 4-wire cable. Connect the black wire of the 3-wire circuit to either the red or the black wire of the 4-wire circuit. The red and black wires are the”hot” wires. Either wire can be used to power a circuit.

Where does the green wire go on a 4-prong dryer cord?

Tip. Some dryers have a green ground screw in a different location, to the side of the terminal block or sometimes on the dryer housing. A green screw is for the ground wire, and that is where the green ground wire of the four-prong cord is connected.

Can you wire 220 with 3 wires?

Typically, a 220v power plug can be connected with three or four wires. These are two hot wires, one neutral and a ground wire. The two hot wires are usually black and red in color. On the other hand, the neutral wire is usually white in color and the ground wire green.

Do I need the red wire for a dryer?

Some dryers depending on their age will show labels on the screw connections. If so, L1=Hot, N=Neutral, and L2=Hot. The red and black wires (Left & Right if not color coded) can go on either hot terminal, it really doesn’t matter. Just be very careful not to put a hot wire on the neutral connection.

What is the red wire for on a dryer plug?

Black is L1 or line one. White is neutral. And red is L2 or line two. The center wire on the three-wire cord is neutral and will always be installed in the center of the terminal block.

What is the difference between a 3-prong and 4-prong dryer cord?

3-prong dryer cords contain two ‘hot’ wires along with a third wire that contained both the ground and neutral wire. If a current happened to make its way onto the ground wire, it could travel up to the dryer. The more recent 4-prong dryer cords feature two hot wires, a neutral wire and a ground wire.

Are all new dryers 4-prong?

The National Electrical Code currently requires 4-prong dryer outlets in all new home construction. Existing homes may still use 3-prong outlets. The switch to a 4-prong outlet was due to a flaw in the 3-prong outlet design. In a 3-prong outlet, the ground and neutral wires are contained in the same prong.

What is the difference between a 3-prong and 4-prong range cord?

The difference is that in older appliance installations, the legally-installed 3-wire cord consisted of wiring that was configured with two hot wires and one neutral wire. The new 4-prong construction provides the 4th grounding conductor that was missing in the 3-wire configuration.

Why do dryers have 4 prong outlets?

Today all newly installed outlets for dryers must be compatible with a 4-prong outlet. These updated outlets contain a separate ground that eliminates the possibility of a current traveling back to the machine. This also helps to avoid electrical shock or even fire.

Are 3-prong dryers safe?

A newer dryer run on a 3-prong system is an electrical hazard at best, even if nothing goes wrong, and a disaster if there is a short or loose wire.

Why does 220v have 4 wires?

The reason this change was mandated by the National Electrical Code is that the 4-wire setup is inherently safer and better able to prevent electrical shock, which in the case of a 220/240-volt circuit can be fatal.

Do you need 4 wires for 240V?

Therefore, if a device requires only 240V, only two ungrounded (hot) conductors are required to supply the device. If a device runs on 120V, one ungrounded (hot) conductor and one grounded (neutral) conductor are needed.

What is the difference between 3 wire and 4 wire?

3-wire is the industry workhorse for good reason. It provides solid accuracy that typically exceeds industrial needs and is the most economical with respect to simplified electronics and less wire (more on this below). 4-wire will give you better accuracy, especially with long wire runs.

How many wires do you need for 220v?

In all cases, you need three-conductor cable, which actually contains four wires since the ground, although necessary, isn’t considered a conductor. Be sure to buy a receptacle and cable rated for the current draw of the appliance.

How do you hook up a 220 dryer cord?

Quote from the video:
Quote from Youtube video: And you'll actually have a fourth wire which is gonna be your ground wire you need all four of those for your dryer circuit.

How do you wire a 4 prong outlet?

Quote from the video:
Quote from Youtube video: Which will go with the four wire conduit. And so in this case you would have two hot a neutral or con wire and a ground wire. As well and to fit all this in.