The average volts a fractal wood burns are between 10 and 20 amps. There is no set voltage for fractal wood burning, as the amount of heat required will vary depending on the material you are using.
In general, you will need to use a higher voltage for materials like metal and glass, as they require more heat to melt. For wood, a lower voltage setting should be sufficient.
As always, it’s important to take proper safety precautions when working with high-voltage equipment. Make sure you have the proper clothing and eye protection, and always work in a well-ventilated area.