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Q: Explain why the hair dryer uses a 2-pin plug?
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Why are hair dryers not earthed?

Things that aren't grounded, like hair dryers, are double insulated. If the hair dryer gets a short circuit, the two layers of insulation will protect you. Hair dryers also have a ground-fault circuit interrupter plug that protects you if you drop the appliance in water.


How does a hairdryer dry wet hair?

When you plug in the hair dryer and turn the switch it on, the electrical current flows through the hair dryer. The circuit first supplies power to the heating element. In most hair dryers this is a bare coiled wire, but in models that are more expensive there can be fancier materials in action, like a tourmaline-infused ceramic coating. The current then makes the small electric motor spin and that turns the fan. The airflow generated by the fan is directed down the barrel of the hairdryer, over and through the heating element. As the air flows over and through the heated element, the generated heat warms the air by forced convection. The hot air streams out the end of the barrel. The hairdryer uses a small fan that looks like a hydraulic turbine (i.e. water wheel). The fan in a hair dryer uses electrical energy to generate airflow. The small motor actually sits inside the fan, which is firmly attached to the tip of the motor. When you supply power to the motor, the motor and the attached fan both spin. The centrifugal movement of the fan blades draws air in through the small round air inlets in the side casing of the hair dryer. These holes are covered by a safety screen that prevents other objects (such as strands of your hair) from being sucked in as well. The air is then blown down the barrel of the hair dryer. When you use it on your hair this hot air blows the water, or chases it, off the hair shaft. Imagine the hair is like glass. Water runs straight off of it.


How do the plates in a hair straightener get hot?

They get hot because of the electricity that heats the plates. That's why you have to plug it in or else it won't get hot.


Why do you need more force to pull a plug in a full bath tab?

Quite simply the weight of water directly above the plug in a bath is considerably more than the weight of water above the plug in say a hand basin. In addition, the surface area of the bath plug is greater than that of a conventional hand basin plug. Therefore, the column of water being moved by the removal of the bath plug would have a larger volume than that of the hand basin plug. Consequently, weighing more and therefore requiring a larger force to move the plug in an upward direction. If you find pulling the plug on a chain difficult, then you can always upgrade your bath plug chain combination for a rotary cable 'pop-up' bath waste mechanism. This should aid your comfort in attending to the bath water evacuation process.


What is the third prong in plug for?

On a British plug it is the earth pin connected to the earth wire. This is safety feature to stop electric shock

Related questions

Where do you plug in a hair dryer?

in a power outlet


Will your hair dryer work in Jamaica?

Maybe...... as long as they have the same outlets/plug-ins.


Where should you put a hair dryer holder?

You would want to place it in a location that was easy to access and had an electric supply while remembering to keep the hair dryer plug away from all water sources.


Plug a dryer into a regular plug?

Need to know what type of dryer.


What happens when oil leaks into a spark plug?

Just immerse the spark plug in a recipient with solvent, kerosene or thinner, and use a hair dryer to get the spark plug dried again.


What is the max height of dryer plug from floor?

The maximum height of the dryer plug from the floor should be 1.5m.


What is needed to change from an old dryer to a new one?

As long as the new dryer has the same plug configuration as the old one, just plug it into the same receptical that the old dryer was plugged into.


Can you plug a 220 hair dryer into a 230 plug?

Nominal residential voltage is 120/240 volts. Not sure from you description if the plug is just rated at 230 volts or is supplying 230 volts (It is likely that the plug may be rated at 230 volts, but only operating at 120 volts). A typical hand held hair dryer would operate on 120 volts. A commercial hair dryer might operate at 220 volts, but must be plugged into a 220 supply.


Can you plug a dryer into an electric range plug?

Not normally, the pins are in a different configuration.


How do you dry a lilly?

Plug a blow dryer in and dry it.


Why are hair dryers not earthed?

Things that aren't grounded, like hair dryers, are double insulated. If the hair dryer gets a short circuit, the two layers of insulation will protect you. Hair dryers also have a ground-fault circuit interrupter plug that protects you if you drop the appliance in water.


What would happen if you used a hair dryer in a bathroom?

People use hair dryers in bathrooms daily. You just need to follow safety precautions to prevent the dryer from shorting out, which could cause injury or even death. Many bathroom outlets are equipped with GFI or GFS safety switches and these should be used for maximum safety.Precautions:Do not pull the dryer plug out by the cord.Do not immerse the dryer in water.Do not let the dryer motor become wet.Handle the dryer with dry hands when possible.Do not stand barefoot on a wet or concrete floor, or in a bathtubDo not use a dryer that has a worn or damaged cord.Do not use a dryer that emits smoke, sparks, or loud noises.Do not use adapters or extension cords..