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Water heaters are wired this way, as are cooktops that don't have ovens. As long as you're working with something that only requires 220, like a water heater or a stick welder, this works well.
The third wire is for things like a range, where the heating elements are 220 and the clock is 110. The neutral wire allows you to power different parts of the range with the voltage they like best.
yes
Another homework question. Sure you can if you KNOW what you have with those 2 wires. There are not any stupid questions, but there are alot of dumb ones. I stopped being spoon-fed when I was about 2 years old. Read the book. Learn, Study, Dealing with electricity can save lives OR Kill...pkazsr
Wiki User
∙ 8y ago
Wiki User
∙ 10y agoNo, a single breaker provides only 120 volts to a circuit. If two adjacent distribution panel breakers are terminated in the same box there will be a 240 volt potential there. A kitchen counter is an example of this type of installation. It is called a split receptacle where there is a full 15 amps on the top half of the duplex receptacle and a full 15 amps on the bottom half of the duplex receptacle. Between the two "hot" wires there will be a potential of 240 volts. If 240 volts is needed for a 240 volt device it is best to have a new dedicated cable installed just for the specific device.
Wiki User
∙ 16y agoOne wire cannot make anything. Electricity needs a feed wire and a return wire. This is why all your appliances have a minimum of two prongs. Two wires can have any voltage potential across them, depending on what they are wired to. If you are looking to add a 240V circuit to your home, please buy a book and read about it. No offense intended, but if you don't understand the number of wires needed you are not ready to do it yourself. Remember, negligence is fatal with electricity. Read up on how to do it right; a good book is an investement you won't regret.
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Why 4 wires for dryer?
The dryer is a 240v dryer so two of the wires are your hot wires, or the ones with power on them. One is your ground wire. And the forth is your neutral.
When connecting a 240V line with two hot wires and a ground does it make a difference if the red or black hot wires are connected to L1 or L2 for a jet pump pressure switch?
No, it makes no difference. The selection of red and black "hot" wires on your 220 line is arbitrary.
Can you use a 120v cord that will fit a 240v socket the appliance is 240 and the cord is thick?
120v and 240v cords usually have different end configurations and will not plug into the different recepticles. However, if you changed the plug end, and the cord has the proper size rating, then yes, you could use the same cord. But, it also depends on the cord too. Most 120v cords only have three wires in them. One "hot one "neutral" and one "ground" wire. A 240v cord would have FOUR wires, two "hot" wires, one neutral wire, and one ground wire. Therefore, if you changed the voltage from 120v to 240 using a 3 wire cord, you'd not have a ground wire and that could be VERY dangerous. Note that occasionally a 240v device (e.g. some motors) will only need three wires (red,black,green, no neutral) and can be wired with a 120v cord if the cord is rated for 240v.
How do you hook up a 3 wire water herter to 4 wire circut?
4 wire household wiring is black, red, (hot wires) white (neutral) and bare or green (ground wire). You say 3 wires. Is it 120v or 240v. If its 240v which is more common just use the two hots and the ground and cap off the neutral wire.
Can you join red and black wires to get 240V?
You should never trust any wiring without using a tester (get one at hardware or home improvement store. ) in USA, White/grey/bare wire is neutral, colored wire is hot (live). In a pure 240v connection, there are two hot wires and no neutral wire. Sometimes they still use black and white for this. If you are seeing black and red wires you might be looking at a split phase panel -- you'd best check that out
Why are you not getting 240v between the two hot wires?
Because they are "in-phase". In order to get 240v, you need two 120v Alternating Current lines that are 180° out of phase, that is, opposite phases. Only when one line is +120v and the other -120v will you see 240v between the wires.
Why 4 wires for dryer?
The dryer is a 240v dryer so two of the wires are your hot wires, or the ones with power on them. One is your ground wire. And the forth is your neutral.
Can you use one wire from the panel with 240v on it to wire a 240v water heater?
In North America it takes two "hot" wires to obtain 240 volts.
When connecting a 240V line with two hot wires and a ground does it make a difference if the red or black hot wires are connected to L1 or L2 for a jet pump pressure switch?
No, it makes no difference. The selection of red and black "hot" wires on your 220 line is arbitrary.
What is 2 wire plus ground 240V?
With one interpretation of this question, the answer would be two 120V wires and a ground.
How many wires do you need if you are stepping up single phase 120-240V to 480volts?
Five wires. Two on the primary side, connected to each 120V leg, giving a primary voltage of 240V. Two on the secondary side, one connected to neutral, and the other the new 480V hot. One connecting the frame of the transformer and the box containing it to ground. Note: you will only get one phase power out of this configuration - to get three phase output, you need three phase input, three transformers, and a lot more wires.
Can you use a 120v cord that will fit a 240v socket the appliance is 240 and the cord is thick?
120v and 240v cords usually have different end configurations and will not plug into the different recepticles. However, if you changed the plug end, and the cord has the proper size rating, then yes, you could use the same cord. But, it also depends on the cord too. Most 120v cords only have three wires in them. One "hot one "neutral" and one "ground" wire. A 240v cord would have FOUR wires, two "hot" wires, one neutral wire, and one ground wire. Therefore, if you changed the voltage from 120v to 240 using a 3 wire cord, you'd not have a ground wire and that could be VERY dangerous. Note that occasionally a 240v device (e.g. some motors) will only need three wires (red,black,green, no neutral) and can be wired with a 120v cord if the cord is rated for 240v.
How do you hook up a 3 wire water herter to 4 wire circut?
4 wire household wiring is black, red, (hot wires) white (neutral) and bare or green (ground wire). You say 3 wires. Is it 120v or 240v. If its 240v which is more common just use the two hots and the ground and cap off the neutral wire.
Can you run two laundry dryers on one 220 circuit?
No you can only have one dryer on a 240v circuit and nothing else can be attached to it either considering your using a 240v electric dryer
Why is a lamp safe to use even though it only has two wires?
it is safe because the make it so that the wires use a small amount of enerygy and electricity at the same time. this is safe because it will make it so that the eletrical current is not doverwelming the wires.
Can you join red and black wires to get 240V?
You should never trust any wiring without using a tester (get one at hardware or home improvement store. ) in USA, White/grey/bare wire is neutral, colored wire is hot (live). In a pure 240v connection, there are two hot wires and no neutral wire. Sometimes they still use black and white for this. If you are seeing black and red wires you might be looking at a split phase panel -- you'd best check that out
How do you wire a 1500W 240V flood light that has ground white and black wires?
the wires coming off double pole will give you 240 volts,110 each the black and white hook to these,doesn`t matter which way,ground to ground Ground is always ground, Black and white are your two "hots." You will need a dedicated circuit, you cannot run this off existing 120V wiring. A 15A 240V circuit should be more than sufficient. If this is a permanent instalation you can use 14/2 wire as you normally would, and wire it as you normally would with the exception of the 240V breaker. If you install switches, timers, etc. Make sure they are all rated for 240V. Remember, you can't just mix-and-match between 120 and 240V. 240 appliances will not run on 120 and 120 appliances will burn up on 240.
