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The 4 prong receptacle should be more in line with the latest wiring code. It is best to change the plug or the cord on the appliance you wish to use. If you have a 4 prong outlet, the purpose is to isolate the neutral from the ground.

There are numerous examples mentioned in Wiki s but they all amount to requiring that there be no link between the neutral terminal of the device [appliance] and the frame.

It is, however, allowed [by the NEC, unless disallowed locally by the "authority having jurisdiction"] to install a link to the neutral terminal from the chassis if there is already a three prong outlet existing.

ALWAYS CHECK WITH YOUR LOCAL WIRING SAFETY OFFICE BEFORE YOU ATTEMPT TO CHANGE ANYTHING ON POWER MAINS OUTLETS

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

If you do this work yourself, always turn off the power

at the breaker box/fuse panel BEFORE you attempt to do any work AND

always use an electrician's test meter having metal-tipped probes

(not a simple proximity voltage indicator)

to insure the circuit is, in fact, de-energized.

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โˆ™ 2015-07-16 19:27:33
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Q: If you have a four-prong 240V outlet can you switch the outlet to a three-prong 240V outlet?
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Related questions

If you have a 240V outlet for a window AC unit can you connect a switch to shut the outlet off?

Yes, just make sure it is a 220 volt switch.


How do you convert a 4 prong 240V outlet to a 3 prong 240V outlet?

Disregard the neutral


How do you plug a 120V appliance into an outlet wired for a 240V?

you get an adapter


Can 240V washer run on 120V outlet?

No.


Can you plug a 240v rated motor in a 230v 0utlet?

Yes, you can plug a 240v motor into a 230v outlet.


Can 230V appliance plug into a 230v outlet?

Yes, it can be and there is no problem at all Because most of the electrical appliances are made to work on 220v - 240v so it can also be plugged into a 240v outlet.


Can you plug a 240V amplifier into a 220 volt outlet?

Yes.


240V to a standard outlet?

What is your question? A standard outlet is 110V. A 220 outlet is shaped different so that you know it is 220. You would never run 220 through a 110 outlet.


When would you use a double pole switch?

to turn on a 240v or480v system,like a 240v waterheater


What happens if you plug a 120V appliance into a 240V outlet?

You will burn up your appliance!!!!!


How can you convert a 3 prong 240V appliance outlet to 120V without rewiring and replacing the outlet?

If you need to ask, you should have someone who knows how do it....


Can you plug a 120v 20 amp wielder into a 240v 40 amp outlet?

Absoluteyl not.


Can a 30A 240V outlet be replaced by a 20A 240V one?

You can, but be advised that whatever you plug into the new outlet should not exceed 5000W capacity (20A x 250V = 5000W)or you could risk overheating the new outlet with serious results. To prevent this, you should make sure the circuit breaker is a 20A also.


I have 240V 3 wire twistlock plug and want to wire it so I have 120V outlet?

Don't!


How do you add a 240V outlet?

If you don't know that then you shouldn't be messing around with electricity. It's dangerous.


Can i connect a 240v drier up to a220v outlet?

The two are effectively the same; so Yes.


If you put a 240V bulb in a 120V lamp that has no transformer and plug it into a 240V outlet will it work or blow the circuitry?

Not only will it work, but it will last for much longer than if it was connected to 220volts!


If you put a 60W 120V bulb in a 120V lamp that has a transformer for 240V and plug it into a 240V outlet will it work or blow the circuitry?

Off hand no but your explanations are not clear as to who is doing what to whom,,


If your air conditioner is 120V but the outlet is 240V can you convert from 240V to 120V and how?

If the 220V circuit is dedicated, is to derate the circuit to a dedicated 110V outlet. Replace the 220V breaker with a 110V breaker and install a 110V outlet in place of the 220V outlet. If the original circuit was 20A or greater go with a 20A breaker and a 20A outlet as Airconditioners are fairly large loads. Do not exceed the current rating of the old circuit as that is all the current the existing wiring can handle.


Can you plug a 240V oven range into a European outlet?

You might be able to plug in a 240V American oven range into a European outlet depending on the type of plug. SomeÊAmerican high-powered appliancesÊhave 3 or 4 pins, which may require adapters to plug into European outlets.


If you have a 240V 22A welder which has a plug similar but smaller than a dryer plug can you use this in a 120V outlet?

NO!


Can a 240V baseboard heater work on a 120V outlet?

Yes, but you will only get one quarter of the wattage from the heater.


Can a 240V 30A outlet be converted to 240V 15A?

An existing outlet can be converted by replacing the 30A circuit breakers or fuses in the circuit breaker or fuse box with 15A breakers or fuses. The 30A outlet should also be replaced by a 15A outlet. This is all that is required if the wire from the supply to the outlet is 10, 12, or 14 guage. The existing wire should be 10 guage wire to handle the 30A and there will be no problem in the same wire providing the 15A.


Can you convert an existing 120V plug on an appliance to a 240V plug not speaking of a converter but actually changing the plug so there are no long term effects on the appliance?

If I understand your question, Can you run a 110 appliance off of a 220 volt outlet? You could by only using one leg of the 220. You may also consider changing the outlet. Put in a regular 110 outlet and capping off one leg of the 220 in the wall box. You still have a neutral and a ground to work with. I read this as the questioner doesn't want to modify the outlet. Check the voltage ratings on the device. Many electronic devices nowadays can havdle 120V or 240V as it is cheaper to manufacture one powersupply and sell it everywhere. If your device is rated for 240V, you can put a 240V plug on it. If it only says 120V, no dice. 240V will burn it up.


How do you install a 240V outlet that doesn't have a ground cable but just 2 hot and neutral?

You better call an electrician.