Vasile Surducan wrote: >> the fact you even need to ask this question makes me seriously think you >> shouldn't be messing with 3 phase mains. > > Why ? There are three pins on the triac ... You should probably add a smiley to such an answer in such a context -- and if just for relieving your conscience in case something really blows up :) Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist