Portable Electrode Drying Oven Portable Electrode Drying Oven, supply 80 V.D.C., no need to give supply from main. This can be easily connected one line to the welding holder and another line which is fitted with flexible copper wire and crocodile clip to connect the job. The temperature is maintained 150° - 200° C., body construction by 18 SWG. CRCA. mild steel, simple hinged door, insulation high grade mineral glass wool.