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Old 11-11-2006, 06:21 AM   #84
kerhonky
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Joined: Jan 2006
Location: Selkirk, NY
Oddometer: 1,132
Quote:
Originally Posted by harderkev
So less wire will get hotter but pull less wattage and cover a smaller area. More wire (same guage) will draw more wattage and cover a larger area but produce less heat?

Kev.
Not quite; you're right about the area covered and heat produced, but not about the wattage. Less wire will get hotter and pull more wattage but cover a smaller area. More wire will draw less wattage and cover a larger area but produce less heat.

Watts = volts x amps, so less wire will pull more wattage (less resistance means more current (amps), and voltage stays the same). Actually, now that I've puzzled it out on paper, heat energy in Joules per second is the same as watts. Heaven knows how much mental energy I've unnecessarily expended computing Joules when I could have just figured watts.
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