I am currently experimenting with resistance wire to generate heat. I have 2 types here. One is insulated, the other isn't. The one that isn't insulated works just fine, but the insulated one gives a huge amount of smoke the first time I heat it and then the outside becomes completely black. After that the smoking stops.
What is the use of that insulation if as soon as I put some current on the wire it smokes and turns black?
I measured the temperatures and I did not exceed 80 degrees Celcius. Voltage applied is around 10V and it draws a current of 2.5A.
Some info about the wire: Resistance: 10 Ohm / metre Diameter: 0.25mm Material: CuNi44