You can simply take the back panel off of the stove. The three prong cord will unscrew from the posts. Purchase a new 4 prong cord and connect it the same way the old cord was attached. You will have an extra wire. 4 prongs equals 4 wires. This extra wire is an additional ground that attaches to the actual stove. It is usually green. You will see a screw on the back of the stove near the 3 posts that is screwed into the frame of the range. Unscrew that that place green wire there and screw back in.
Most ranges are sold without the cords and three or four pronged cords can be attached interchangably based on the type of outlet in the individuals home. Appliance stores should have both types of cords available for purchase. If they are helpful people they should be able to explain the installation as well. Sometimes that's best if they can visually show you. Better safe than sorry when dealing with electricity.
Four wires = two hots (red & black), one neutral (white) and one to the stove frame (green). Just connect red black and white the same way they were before and add green to the frame of the stove. There should be a screw in the frame near the electric post often the screw is colored green.
No you can not you will need to replace the plug with a 4 prong the same as the style of your oven and change your breaker to the correct Amp for your style of 4 prong plug
Change either the plug or the cord. The fourth prong is another ground. It would be easier to change the cord.
A qualified electrician should make the change to a dryer connection. The best way to cheaply make the change is to change the power cord on the dryer to the three hole standard.
The four blade dryer plug brings a separate ground wire from the machine to the electrical grounding system. The three blade dryer plug depended on the neutral wire of the plug to make this connection.
3 prong the 2 black wires are your hot and the braided is your neutral.
Disregard the neutral
This is a common topic here. Firstly, if you are installing new work go with a 4 prong oven outlet. 3 prong outlets are old and do not meet code for new work. To install, you need to run 6/3 romex wire from your main panel to your new outlet. Install the new outlet in a box behind your oven. Wire up the 6/3 in the panel to a 50A 240V breaker. Remember the color code: Black/red/brass screw is hot, White/silver screw is neutral, bare wire/green screw is ground. I also recommend buying a book on home electricity repairs. It will show you how to do it right and serve as a handy reference during the job. As always, do it right or hire someone to do it for you. Negligence is fatal with electricity.
Answer for USA, Canada and countries running a 60 Hz power supply service. In order to plug your 3 wire stove into a 4 wire outlet, the easiest way to do so is to change the cord on the stove. This does not require cutting power to the outlet or anything like that. Anyone who is going to be changing the power cable on any device knows that you need to unplug the cord first, eliminating the need to cut power to the outlet. The difference between a 3 prong and 4 prong outlet is the ground wire. Both provide 240v power by supplying 2 120v wires (red and black). There is also a white wire, which will be your neutral wire. The green wire is your ground, and should be bolted to the body of the stove. (Most appliances have a location for attaching the ground wire). When connecting your wires, there should be 3 wire locations. You should connect one of the two hot wires (red or black), then your white wire in the middle, and then your other hot. The green will be your ground.
This is something that should not be done. If this was to be done you would be omitting the ground which in point can make it unsafe. I recommend changing the female end of the system and making it a 4 prong.
2 prong is a hot and neutral and a 4 prong is a 3 phase with a ground wire.3 pole 4 wire meaning 3 hots could be 240 volts or 480 volts
Depending on your PDA, you'll need either a 3 prong or a 4 prong cable with a UBS on the other end.
Check Lowes and Home Depot they normally carry the adaptors