Hi John, There should be no problem. Your welder probably has a duty cycle rating that decreases at higher settings. At its highest setting it is probably only 20 to 30 percent, or 2 to 3 minutes every 10 minutes. If you are welding and your stick or wire welds solid to the work piece, you might blow the 16 amp fuse. If that happens, use a slow-blow replacement fuse. Best regards, Bob P.S. The electrical outlet nearest the main electrical service panel may give you the best performance when welding. On Mon, Feb 16, 2015, at 02:44 AM, John Chung wrote: > Here is the long story........ > I just got into welding. My welding box can draw up to 13 amps. So said > the fuse on the plug. The circuit breaker which is the welding box is > plugged into is rated for 16 amps. > My great concern is burning off the insulation for the electrical cables > in the wall itself. The current draw on the welding box can be high. The > welding box can run up to 200amps *output current*. Hence my concern with > all this testing. I live in a country that uses 240volts. > John --=20 http://www.fastmail.com - Accessible with your email software or over the web --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .