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Must match the rating on your computer. More typical connection is 110-120VAC. If your computer is rated for 220-240 VAC you would need a different plug. It would draw 1/2 the current at 220 than 110.

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Q: 220v or 110v which one is best for computer?
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What causes a 220v wire to pull only 110v?

The fact that it's supposed to. Voltage is stated as the difference between the two wires carrying electricity to the load. When they bring power to the house from the utility, you get two wires carrying 110v but they're 180 degrees out of phase. Imagine one carries positive 110v and the other carries negative 110v. If you hook one of these wires plus a neutral (zero volts) to the load, you get 110v--110v over 0v. If you hook both of them to the load, you get positive 110v over negative 110v, or 220v. So...red to white is 110v, black to white is 110v, red to black is 220v.


Where can one buy a 110V transformer online?

The online retailer Amazon currently has an 'Automatic Transformer Adapter 500W 110v/220v 220v/110v' on sale for $38.89. That's 51% lower than the list price of $79.99 and that's before the free shipping!


How do I get 220 volt circuit?

If you need a 220v circuit at only 15 or 20 amps: Get a new breaker to replace your 110v single pole breaker with a 220v double pole breaker. (You cannot exceed the original breaker's amperage rating unless you also replace the wire with a larger size). Shut off the panel's main breaker (the wires coming into the main breaker will remain hot, so don't touch them.) Remove the old 110v circuit's neutral (white) from the neutral bus bar in your distribution panel. Remove the old 110v circuit's hot (black) from the old 110v breaker. Remove the old 110v breaker. Install the new 220v breaker in place of the old breaker. (This may require you to rearrange some breakers if the old breaker was in between others) Reconnect the black wire to one terminal of the 220v breaker, and reconnect the white wire to the other terminal. Turn on the main breaker, and your new 220v breaker. Before you do this, be sure where the actual circuit goes. Changing 110v to 220v if the circuit is feeding regular 110v receptacles will cause damage to devices plugged into them. Be sure you remove all 110v devices (receptacles) from the circuit before converting it. If you need a 220v circuit for a dryer or other large appliance, your existing wiring will not be sufficient to do the above. You will need to install a new breaker and wiring. For this task, you should consult a professional electrician.


Do you need a neutral wire for 220v generator?

Quick answer is that 220v does not use or need a neutral. The original concept of the neutral (going back to Edison and DC power) was cutting the power in half (not really accurate but one way to look at it). Think about two 110v batteries in series the neutral would come off the connection between the two batteries. so current flow would go from +110 to -110 (first battery) to +110 to -110 (second battery) resulting in 220 output. The connection between the batteries (the neutral) is +110 / -110 resulting in 0. If you want a 110 current instead of using the full flow you could instead use only 'one side' and the neutral and get the 110. When we made the move from DC to AC the basics of this format was kept. So for 110v you need hot and neutral (and a ground) for 220v you need two hots (no neutral) and a ground.HUGE CATCH - WARNING - WARNING!!!Just because you think your equipment is 220v doesn't mean everything it does it does requires 220v for example: some equipment uses 220v for the motor and 110v for the rest of its electrical needs (Dryers are a typical example). In the old days, the dryer would use the two hots (and ground for safety) for 220v and then use one hot and ground (no 'safety' ground) for 110v. However, people often got shocked because this unsafe method would often cause the entire metal chassis to take on a charge. So todays dryers (and any other machine that has both 220v and 110v components) have and are required to have 2 hots ground and neutral. However, the documentation isn't always specific about the '110v need' and a lot of 220v only equipment will still have 4 wire connections even though the neutral is not needed.If you are sure your equipment never utilizes 110v - then you don't need a neutral (a single motor, no thrills (control panel, laser guides, etc), 220v table saw would be fine with out a neutral (one with the thrills may be fine also - depends on the power requirement of the 'thrills'). I don't know about your generator is depends if it is strictly 220v.


120V gas Kenmore dryer and the hook up location has the big 240V female receptacle--what is easiest solution thanks?

The easiest solution is to leave the 220V original outlet alone and plug the 110V dryer into a close 110V outlet, most likely the one for the washer. There should be nearby 110V outlets so you don't have to muck with rewiring the 220V outlet. A short heavy-duty extension cord is an option. I would also recommend killing the power to the old dryer outlet if it is unused. It cannot hurt. If you cannot plug the dryer into a nearby 110V outlet you can derate the 220V outlet down to a dedicated 110V outlet. This is not a task to be taken lightly if you are not experienced. If you do take this course of action yourself, buy a book. Do it right or don't do it at all. Negligence could kill someone.

Related questions

If I connect 110v xbox one to a 220v outlet what will burn will the power supply burn or will the Xbox one burn?

If you connect 110V xbox one to a 220V outlet, only the power supply will burn and not the Xbox one.


What causes a 220v wire to pull only 110v?

The fact that it's supposed to. Voltage is stated as the difference between the two wires carrying electricity to the load. When they bring power to the house from the utility, you get two wires carrying 110v but they're 180 degrees out of phase. Imagine one carries positive 110v and the other carries negative 110v. If you hook one of these wires plus a neutral (zero volts) to the load, you get 110v--110v over 0v. If you hook both of them to the load, you get positive 110v over negative 110v, or 220v. So...red to white is 110v, black to white is 110v, red to black is 220v.


Where can one buy a 110V transformer online?

The online retailer Amazon currently has an 'Automatic Transformer Adapter 500W 110v/220v 220v/110v' on sale for $38.89. That's 51% lower than the list price of $79.99 and that's before the free shipping!


How do you wire a 110v supply for 220v heaters?

A 220v heater has two 110v lines coming into it--either two 110v lines with a neutral, like a range, or two 110v lines with no neutral, like a water heater. Unless there's a fan in the system, they only use two wires. It's cheaper that way. If you have a DEDICATED circuit for each 220v heater--one where there's only one thing on the breaker--and you have at least 10/2 wire (unless the amps call for 8/2 or 6/2 wiring, which happens), you can install a two-pole breaker to feed 220v to the heater. If you're just trying to plug the heater into an outlet and get it to work, you've got a problem in that you can't pull 220v out of a 110v outlet no matter how hard you try. Sorry.


Which is better 220 versus 110 volts both with 20 amps?

At 20 amps the 220V will supply twice (2x) the power that the 110V will supply. The answer depends upon your meaning of the term 'better'. If you have a specific size load that you are supplying such as a motor that will accept either 220V or 110V then by using 220V you will have less of an impact from voltage drop and the conductor size will be smaller due to the current being 1/2 of the 110V. If by better you mean which one will give you the most power then the obvious answer is 220V.


What happens when both 110v leads are applied to one side of a 220v electric motor?

The breaker will blow because you are effectively causing a short circuit.


How do I get 220 volt circuit?

If you need a 220v circuit at only 15 or 20 amps: Get a new breaker to replace your 110v single pole breaker with a 220v double pole breaker. (You cannot exceed the original breaker's amperage rating unless you also replace the wire with a larger size). Shut off the panel's main breaker (the wires coming into the main breaker will remain hot, so don't touch them.) Remove the old 110v circuit's neutral (white) from the neutral bus bar in your distribution panel. Remove the old 110v circuit's hot (black) from the old 110v breaker. Remove the old 110v breaker. Install the new 220v breaker in place of the old breaker. (This may require you to rearrange some breakers if the old breaker was in between others) Reconnect the black wire to one terminal of the 220v breaker, and reconnect the white wire to the other terminal. Turn on the main breaker, and your new 220v breaker. Before you do this, be sure where the actual circuit goes. Changing 110v to 220v if the circuit is feeding regular 110v receptacles will cause damage to devices plugged into them. Be sure you remove all 110v devices (receptacles) from the circuit before converting it. If you need a 220v circuit for a dryer or other large appliance, your existing wiring will not be sufficient to do the above. You will need to install a new breaker and wiring. For this task, you should consult a professional electrician.


How do you wire 240V straight blade outlet when both screws are brass?

Both screws are brass because in the US you need two hots to get 220V. In a 220V only circuit you do not connect the neutral, only two hots and a ground. This is why 220V breakers are twice as wide as 110V and have two terminals instead of one.


Do you need a neutral wire for 220v generator?

Quick answer is that 220v does not use or need a neutral. The original concept of the neutral (going back to Edison and DC power) was cutting the power in half (not really accurate but one way to look at it). Think about two 110v batteries in series the neutral would come off the connection between the two batteries. so current flow would go from +110 to -110 (first battery) to +110 to -110 (second battery) resulting in 220 output. The connection between the batteries (the neutral) is +110 / -110 resulting in 0. If you want a 110 current instead of using the full flow you could instead use only 'one side' and the neutral and get the 110. When we made the move from DC to AC the basics of this format was kept. So for 110v you need hot and neutral (and a ground) for 220v you need two hots (no neutral) and a ground.HUGE CATCH - WARNING - WARNING!!!Just because you think your equipment is 220v doesn't mean everything it does it does requires 220v for example: some equipment uses 220v for the motor and 110v for the rest of its electrical needs (Dryers are a typical example). In the old days, the dryer would use the two hots (and ground for safety) for 220v and then use one hot and ground (no 'safety' ground) for 110v. However, people often got shocked because this unsafe method would often cause the entire metal chassis to take on a charge. So todays dryers (and any other machine that has both 220v and 110v components) have and are required to have 2 hots ground and neutral. However, the documentation isn't always specific about the '110v need' and a lot of 220v only equipment will still have 4 wire connections even though the neutral is not needed.If you are sure your equipment never utilizes 110v - then you don't need a neutral (a single motor, no thrills (control panel, laser guides, etc), 220v table saw would be fine with out a neutral (one with the thrills may be fine also - depends on the power requirement of the 'thrills'). I don't know about your generator is depends if it is strictly 220v.


120V gas Kenmore dryer and the hook up location has the big 240V female receptacle--what is easiest solution thanks?

The easiest solution is to leave the 220V original outlet alone and plug the 110V dryer into a close 110V outlet, most likely the one for the washer. There should be nearby 110V outlets so you don't have to muck with rewiring the 220V outlet. A short heavy-duty extension cord is an option. I would also recommend killing the power to the old dryer outlet if it is unused. It cannot hurt. If you cannot plug the dryer into a nearby 110V outlet you can derate the 220V outlet down to a dedicated 110V outlet. This is not a task to be taken lightly if you are not experienced. If you do take this course of action yourself, buy a book. Do it right or don't do it at all. Negligence could kill someone.


How is the power supply in Europe delivered with two wires and still 220 volts?

Oh yes. They do provide 2-wire 220V and even 2-Wire 240V service in Europe. We went a different way in the States early on when we attached a center-tap wire in those same service transformers to provide 2 x 110V services, along with one 220V service. It is worthy to mention that 110V (220V) services in the US progressed to 115 (230V) and now stand at 120V (240V).


How do you change over so you can plug a 120V RV plug into a 240V single-phase twist-lock receptacle?

Is the 220V plug 220V only or 110/220V? (The former will have 3 prongs and the former will have 4) If your case is the latter just use the ground, neutral, and one of the hots. This will give you 120V single phase. If the case is the former you can't get 110V off that plug.