Heating 800 watts nichrome wire with a battery.

In summary: W. You should not experiment with high voltage or high temperature without proper knowledge and equipment.
  • #1
totoykabute
8
0
hi guys.. I'm new here and this is my first post.. my friends told me that the title of this post is impossible and i need a car battery to heat the 800W nichrome wire, and i believe them.. they also said that AC will solve the problem.. but i need to use DC so i came up with using diodes.. the problem is the setup.. I'm not familiar on how to connect those stuffs so anyone here who have a heart to help a dumb like me.. just a simple diagram using a 800 watts nichrome wire, a plug, and diodes.. I'm afraid i might create a bomb so please do help me.. thank you in advance..
 
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  • #2
Yes the wall plug can electrocute you.

A car battey can explode which will spray battery acid in your face.

A red hot nichrome wire near upholstery or plastic underhood parts can start a fire,

what is it you are trying to accomplish? Maybe someone can help.
 
  • #3
What do you need 800W of hot wire for? Sounds a bit 'industrial'.
 
  • #4
i just want to heat the nichrome wire using direct current to compute the temperature it can produce and not to heat something.. my problem is a safe setup of heating the 800watts nihrome wire using DC..
 
  • #5
totoykabute said:
i just want to heat the nichrome wire using direct current to compute the temperature it can produce and not to heat something.. my problem is a safe setup of heating the 800watts nihrome wire using DC..

The wattage developed by your wire will depend upon the voltage applied. At what voltage does it generate 800W? What you really need to know is the resistance of the wire. Given that we could tell you more.
 
  • #6
totoykabute said:
to heat the 800W nichrome wire,
Why not buy a factory-made one which is connected up and ready to go? That way you don't need to risk safety with dodgy wiring. It's a simple electric toaster. :biggrin:
 
  • #7
For a lab experiment you can get excellent results with 24W from a 12V source. Easier and safer. 1kg of water is about right.

if you just want to get the wire hot then you really don't want to have a damned great lethal coil of red hot wire to deal with. Do it with a short length and a low voltage (C cell), briefly. How would you plan to measure the temperature? In air it should get red hot - what temperature would that represent?
 
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  • #8
power: P = V*V/R
resistivity: p = R*A/L

measure your wire's diameter, and look up it's resistivity, and you'll be set

also, doesn't PF not deal with dangerous topics? shouldn't this topic be locked?
 
  • #9
jehan60188 said:
also, doesn't PF not deal with dangerous topics? shouldn't this topic be locked?

I'm inclined to agree with you. (Do as I say, not as I did?)
 
  • #10
it's not a matter of "do as I say not as i did" so much as "do it the right way"
there is a right way for amateurs to experiment with high voltage, high temperature, highly acidic compounds, etc. they first need to do research- in books!
a forum is NOT the place to learn things; the internet barely is.
 
  • #11
You are right of course. You certainly can't believe what you see with experiments on YouTube and any idiot could be giving advice in a forum.

(I'm glad that you were so well behaved in your youth. Wot, not a single scar?)
 
  • #12
thanks for the replies..
@Integral- i bought the nichrome wire with its wattage already set..
@sophiecentaur- i can't find a 24W nichrome wire.. suppose i cut the 800W nichrome wire, will that reduce the wattage?..
 
  • #13
Is this a roll of uninsulated wire? How many metres long? Can you unwind a few metres and determine its resistance/metre? If not, why not? :smile:
 
  • #14
I think he understands so little about this that it is clearly dangerous for him to continue with it. He appears not to have a clue. Steer clear.
 
  • #15
There is no fixed value of 'temperature' given the specification of a "800W Nichrome wire". A stable temperature is achieved once power in (800W, assuming you set the voltage correctly) equals power out (heat flow). So, the answer depends on what is surrounding the wire (vacuum, still air, flowing air, copper tube, etc. etc.) and their steady state temperatures. The hottest would be in a vacuum, where the wire will turn red to white hot before it melts. In still air, red hot is likely to be the upper limit. As noted, this can be dangerous, and your lack of knowledge of basic electronics has people concerned for your safety. Just because the wire says '800W' does not mean that is the limit of the wire. Choosing the wrong voltage could exceed this greatly. Note also that the resistance of Nichrome varies with its temperature (like all metals), but you can search for this variation on the web. Do not assume a measured resistance at room temp is going to be the same when its red hot.
 
  • #16
totoykabute said:
thanks for the replies..
@Integral- i bought the nichrome wire with its wattage already set..
This is maximal value, the actual value depends on your setup.

You clearly do not have the required knowledge to do this safely. We won't help you to kill yourself here.
 

Related to Heating 800 watts nichrome wire with a battery.

1. How does heating 800 watts nichrome wire with a battery work?

The heating process works by passing an electrical current through the nichrome wire, which has a high resistance to electricity. This resistance causes the wire to heat up and produce thermal energy, which can then be used for various applications.

2. What is the difference between using a battery and other power sources to heat the nichrome wire?

The main difference is in the type of power source and the amount of energy it can provide. Batteries are a portable and self-contained power source, whereas other power sources may require a constant supply of electricity. Additionally, the amount of energy a battery can provide is limited compared to other power sources.

3. Can I adjust the temperature of the nichrome wire when heating it with a battery?

Yes, the temperature of the wire can be adjusted by controlling the amount of electrical current flowing through it. This can be achieved by using a variable resistor or by changing the number of batteries connected in series or parallel.

4. Is it safe to use a battery to heat the nichrome wire?

As with any electrical device, it is important to follow safety precautions when using a battery to heat the nichrome wire. Make sure to use the correct voltage and properly insulate the wire to prevent any short circuits. It is also important to handle the battery and wire with caution to avoid any burns.

5. What are some common applications of heating nichrome wire with a battery?

Heating nichrome wire with a battery is commonly used in portable heating devices such as soldering irons and electric cigarettes. It is also used in heating elements for small appliances such as hair dryers and toasters. Additionally, it can be used in science experiments to demonstrate the properties of heat and electricity.

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