> Robert, > As per the electrical code the breakers are rated at 80% of their > rated value for a continuous load. That means that a 15 amp breaker is > only rated to carry a 12 amp continuous load and a 20 amp breaker is > only rated at 16 amps. > Thanks, > rich! I was not aware of that. =A0I do however have first hand experience with wo= rn out and/or poor quality breakers tripping at lower currents than new Squ= are D and Siemens units. I have some Westinghouse and no-name breakers that my Campbell Hausfeld 70 = amp welder will trip. Replacing them with Siemens breakers of the same rating solves the problem. Cheers, Robert =20 --=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 .