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The NEC allows connection of ungrounded, 3-prong outlets if there is a properly installed GFCI "upstream" of the ungrounded outlet.

As long as everything is working as designed, nothing will happen, but that third connector is a safety feature to protect you. It is connected to the frame of the appliance and if there is an internal short, leads the electricity back to ground. Without that connection, the operator may become the ground, i.e., crispy critter.

No, it is not safe. Ground is a safety line, without it the appliance is not safe. It may work, and you probably will not be harmed, but it is not safe.

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โˆ™ 2015-07-17 17:36:50
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Q: Is it safe to plug in three prong appliances into a three prong wall outlet that has no ground to it?
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Related questions

Can one convert a two prong outlet to a three prong outlet?

Yes, provided that you have a ground wire in the box and that the ground wire is properly connected in the electric panel.

Can you plug a 3 prong extension into a 110 volt outlet?

Yes, provided the outlet has a three element receptacle. The third prong is ground. If you use an adapter that connects three prongs to a two slot outlet there is a shock danger.

Why 4 prong dryer instead of 3 prong dryer cord?

Because the ground is missing in a three prong, the appliance uses a ground strap off the neutral if the ground wire is missing. New codes require a 4 prong outlet if the electrical is being installed new. Remember, if you use a 4 prong, the outlet must be a 4prong outlet, this means it must have 2-hots, 1-neutral, 1-ground. If the outlet does not have these then there is no use having a 4 prong plug on the appliance.

Can you plug a four prong dryer into a three prong outlet or is there an adapter you should use?

The best thing to do would be to replace the outlet with a four prong outlet. That way you get a separate equipment ground which is required by the newest code. Otherwise you could replace the cord on the dryer with a 3 prong cord, and connect the ground and neutral together in the dryer, but this is no longer recommended.

Can you plug a four prong dryer into a three prong outlet?


Why is the ground the longest on a three prong outlet?

The length of the ground prong is simply a matter of design for a plug application. Not all ground connectors are longer, the design of the ground terminal is simply to avoid improper wiring of the device.

How do you wire a three prong 240 volt outlet?

There are many three prong outlets. Need the amperage of the outlet to give the exact terminal letters.

If a new electric range has a 4 prong cord but the outlet is 3 prong can you get an adaptor or does the outlet or cord need to upgraded or replaced?

You should install a four prong. The older ones were three prong and had no ground. An adaptor isn't made because it wouldn't fix the problem. You could make your own adaptor and cut the ground off with a pair of dykes, but don't.

Where do you ground the extra wire when plugging a 4 prong wire into a three prong outlet for a dryer at?

It may be a 220 Dryer, and you will need a new outlet installed. There should be no extra wires when connecting the Power cord to the plug

Which is the ground on a three prong plug?

There are two flat spades and a rounded prong on a three pronged electrical plug. The rounded prong is the ground.

How do you adapt a 3 prong range cord to a 4 prong outlet?

To adapt a three prong range cord?æto a four prong outlet you need to remove the screws from the back plate to open the electric access panel. Then, pull out the copper grounding strip attached to the middle terminal. Next, remove the green ground screw from under the terminal block and attach it to the four prong outlet.?æ

On a standard three prong AC outlet what should the AC voltage measure between hot and ground?

In North America 120 volts.

Which prong on the back of a three prong headlight sealed beam is ground?

Is it a plastic prong sealed together

How do you connect two three prong outlet to four prong transfer switch?

There is not enough information stated as to what you are trying to do.

Can you use some sort of adaptor or converter to plug regular small appliances into an three-prong oven outlet?

Assuming this is one with a big plug with one L-shaped prong and the other set at an angle - NO! Don't even think about doing this!

How do you adapt a 3 prong German plug to fit into a 3 prong US 230 dryer outlet?

German appliances don't have three pinned plugs. The standards are the "Schoko" plug, which is a two pin plug with contacts on the side as a ground connection and the "Euro plug which is a two pin plug without a ground connection. There are adapters available at most good electrical stores.

How do you wire a three prong receptical?

A typical three prong residential outlet for 120 volts has a brass colored, a silver colored and a green screw. Connect black wire to brass, white wire to silver and bare ground wire to green.

What does the third prong ion a three prong pulg do?

The 3rd round plug is the ground connection.

How do you ground a three-prong outlet?

Assuming residential, 120VAC outlet: Black to brass colored screw or the screw marked "hot". White to silver screw or the screw marked "neutral". Ground to green screw or the screw marked "ground".

Can you safely change a four-prong electric dryer outlet to a three-prong 240V air conditioner outlet?

No. Call an electrician. 50 dollars is cheap compared to having your dwelling burn up.

What type of appliances have three prongs?

The third prong is to protect from shock. If there is any way for you to come in contact with a conducting surface on the appliance you have the third prong.

Dryer outlet is four pronged and angled and dry cord is three pronged how do you make it work?

If the outlet at the wall is a four-prong type, change the cord on the dryer to a four-prong (30-ampere rated)

What if the top pin on three pin plug broken in electric socket. Is it dangerous?

Not in itself. Do not plug another three prong plug in the outlet until the broken prong (round-ish) is removed from the outlet. The third prong (round-ish) on a three prong plug is the ground. It does not carry any power.Correction"It's the power return"

Does the ground in a three prong plug go down?


How do you connect a four prong outlet to a 12-2 plus ground wire where both black and white wires are hot?

You don't, you need a three wire to correctly make the connection.

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