... the total power consumption is less then 3000W. 3) The core is made of copper wire and this toroidal transformer can achieve ... percent 500W,1000W, 2000W ,3000W voltage toroidal transformer for selling, welcome to choose. apply to power amplifier, CD, electric tools, printer and other ... , polishing machine, bristle brushes, polishing buff etc. 110v to 220v transformer 500w for pure sine wave