> -----Original Message----- > From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf > Of John Woodgate > Sent: Monday, March 09, 2009 4:04 PM > To: emc-p...@ieee.org > Subject: Re: Surge testing Questions > > In message > <de87437fe365cb458c265ea3d73b6f1d04677...@xbc-mail1.xantrex.co m>, dated Mon, 9 Mar 2009, Ralph McDiarmid > <ralph.mcdiar...@xantrex.com> writes: > > >Most scopes I've used earth the probe ground-lead through > their mains > >power cord, so likely no need to attach the ground clip to anything > >when probing mains voltage. > > This can be checked by attaching the ground clip and noting > whether there is any change in the display. Then leave it attached! > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and > www.isce.org.uk Things can always get better. But that's not > the only option. > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
And if the ground clip lead should suddenly begin to swell like a plumping hot dog, then emit jets of smoke and finally glow for a moment until the excitement ends, then you have yet another useful data point. What, you never had that happen?! Ed Price ed.pr...@cubic.com WB6WSN NARTE Certified EMC Engineer Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 Military & Avionics EMC Is Our Specialty - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
