# heating 800 watts nichrome wire with a battery.

by totoykabute
Tags: battery, heating, nichrome, watts, wire
 P: 8 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..
 PF Patron Sci Advisor P: 2,917 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.
 PF Patron Sci Advisor P: 10,060 What do you need 800W of hot wire for? Sounds a bit 'industrial'.
P: 8

## heating 800 watts nichrome wire with a battery.

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..
Mentor
P: 7,203
 Quote by totoykabute 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.
HW Helper
P: 4,192
 Quote by totoykabute 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.
 PF Patron Sci Advisor P: 10,060 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?
 P: 204 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?
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