I did some research and did this calculation: circumference of the spool: diameter of the screw * PI :: 1 * 3,14 = 3,14 Length of wire: Number of turns * circumference :: 500 * 3,14 = 1570 cm The resistance of the wire / cm (ohm): 0,00032 Total resistance of the wire: resistance per cm * length :: 0,00032 * 1570 = 0,5024 Current: I = V/R, I = 5 / 0,5024 = 9,95 A Im using wikipedia to get information about the copperwire: Two questions reagarding the cable: 1) The Ampacity - is that what temperature the current will generate? In my case than if you read the table, since my current is 9,95 A that would generate about 70 degrees? Is that correct? 2) Fusing Current - that is the current that will melt the wire? Preece is longer than 10 seconds and Onderdonk is over 1 second or 32 ms? Is that correct? So in my case I should go for a thicker wire (lower AWG) to be able to take down the heat.
