I need to melt fishing line with the resistance in an electrical wire powered by a 9 volt battery. how do i go about this safely??
The smaller the diameter of the wire, the higher it's resistance will be - it's the resistance to current flow that creates heat - as well as the amount of current flow. But batteries have their own internal resistance - a large current flow out of a small battery will mostly heat the battery. If you can use resistance wire (specially made to have resistance - get some out of an old toaster, or a power resistor, or light bulb filament), that would help. If not, use the smallest diameter of steel wire you can get. You could avoid the batteries internal resistance problem by using the battery to charge a capacitor , with a resistor in circuit so that the battery voltage stays high (internal resistance is why battery voltage falls off under load). once cap is charged, It can rapidly discharge the current all at once. Use a large capacitor with a voltage rating not too much greater than 9volt. Keeping the heat concentrated will be important. maybe have your wire and fishing line on top of one brick, and cover it with another. Prewarm the bricks as much as you're allowed (light bulb?)
If aluminum wiring is put in wisely and maintained wisely there's no subject. there is probable a unfastened connection at your outlet that the microwave is plugged into. maximum probable somebody replaced that outlet with a CU merely outlet and it would be CU/AL (copper/aluminum) it rather is greater costly. we've aluminum wiring in our domicile and have in no way had a topic. i take advantage of the right merchants and make useful they are stable and tight while changing an outlet, which you will possibly desire to do with copper wiring additionally. So, I propose you examine that outlet and alter it out if needed. shrink off the small area of undesirable twine before changing the opening.
