On 14 September 2011 04:51, Electron wrote: > > Nice circuit. Perhaps unnecessary to say, but a fuse probably wouldn't be= wasted > in this application, you never know the capacitor shorts.. > > A question: if I'm 100% sure that I'm getting my neutral/line wiring righ= t, is > there any safety risk/concern in touching the neutral wire? I mean, could= there > ever happen anything at the power station that makes me get an electrical= shock > if I touch the neutral wire? I don't think they'll ever swap neutral and = line, > it would even be quite hard to do technically for them (as, as far as I k= now, > neutral wires are all grounded). > > Another question.. if I use an isolation transformer, neither touching ei= ther of > the secondary wires will provoke an electrical shock (of course not touch= both > wires together :D ), right? > But what is that makes me get a little shock when I touch the line wire, = the > resistive path to earth or the capacitive coupling with the earth (thus i= t would > give me a shock even if I was flying and not touching the ground)? > > Cheers, > Mario > Mario, In NZ, the regulations state to treat the neutral as being live. The problem is that although you may have the neutral & phase correct, you can't guarantee that the supply will have it correct. It's less likely in a large industrail situation that it will be wrong, but there's alway a chance. RP --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .