Re: [Elecraft] ESD Protection for K3 Assembly
Since it has an alligator clip, connect it to the mains safety ground. Also connect the mat to the same ground. DO NOT attach the alligator clip to the edge of the mat. If there's a terminal for the ground, fine, but the resistance of most mats is too high to simply clamp an alligator clip onto the side. You should find that there is about 1 megohm of resistance between the metal terminal that rests against your wrist and the alligator clip at the end of the cord. That is a built-in resistance designed to protect you from dangerous electrical shock should you touch a "hot" circuit, but still low enough to ensure that any charge on your body is dissipated rapidly -- provided the alligator clip is attached to a ground. 73, and have fun! Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Smith Sent: Wednesday, December 05, 2012 2:04 PM To: 'Jay Krishna'; elecraft@mailman.qth.net Subject: Re: [Elecraft] ESD Protection for K3 Assembly Jay most have a snap on them that snaps to the one on the mat like it. Then the mat attaches to the ground. Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jay Krishna Sent: Wednesday, December 05, 2012 3:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] ESD Protection for K3 Assembly Hi all, I received my K3 kit yesterday and am setting up to start assembly. I bought an ESD mat and a wrist band. I was wondering what I should connect the alligator clip from the wrist band to, for best protection? Thanks, Jay (KD6AMA) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2634/5438 - Release Date: 12/05/12 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] ESD Protection for K3 Assembly
Thanks Don... Yes indeed...all my grounds are connected to each other via big fat ass cables. Sent, as to how? Who cares! On Dec 5, 2012, at 4:22 PM, Don Wilhelm wrote: > Phil, > > Connection to the AC ground should be adequate and safe - if a receptacle is > properly grounded, remove the screw in the center of the cover plate and > attach a terminal lug there. > > If your station ground is connected by a heavy guage wire to the Utility > Entry ground point, then I will agree with your that the station ground will > do. > > We all know that there are references to "station ground" that are connected > to driven ground rods that are NOT connected to the Utility Entry ground. > > I need to point out that not only is that a violation of NEC grounding > requirements, but it presents safety hazards for anyone in contact with that > station ground under AC wiring fault conditions. All grounds must be > connected together except for structures separated by 100 feet or more. > > See the 2010 (or later) ARRL Handbook for further information. > > I apologize if this sounds like a rant, but it is not - it is concern for the > safety of each and every ham. > > 73, > Don W3FPR > > On 12/5/2012 5:32 PM, Philip Townsend Lontz wrote: >> I connect mine to my station ground... If there is zero lightning! >> >> Sent, as to how? Who cares! >> >> On Dec 5, 2012, at 3:04 PM, Fred Smith wrote: > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] ESD Protection for K3 Assembly
Phil, Connection to the AC ground should be adequate and safe - if a receptacle is properly grounded, remove the screw in the center of the cover plate and attach a terminal lug there. If your station ground is connected by a heavy guage wire to the Utility Entry ground point, then I will agree with your that the station ground will do. We all know that there are references to "station ground" that are connected to driven ground rods that are NOT connected to the Utility Entry ground. I need to point out that not only is that a violation of NEC grounding requirements, but it presents safety hazards for anyone in contact with that station ground under AC wiring fault conditions. All grounds must be connected together except for structures separated by 100 feet or more. See the 2010 (or later) ARRL Handbook for further information. I apologize if this sounds like a rant, but it is not - it is concern for the safety of each and every ham. 73, Don W3FPR On 12/5/2012 5:32 PM, Philip Townsend Lontz wrote: I connect mine to my station ground... If there is zero lightning! Sent, as to how? Who cares! On Dec 5, 2012, at 3:04 PM, Fred Smith wrote: __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] ESD Protection for K3 Assembly
The important thing is that you and the device you are working on are at the same potential (voltage). When you place the device on the anti-static mat, it will be at the mat potential. So you should connect your wrist strap to the mat. Most wrist straps have a snap that connects to a matching snap on the mat. It is also important that the soldering iron be at the same potential as any device you are soldering with it. Assuming the soldering iron is grounded to the electrical system safety ground, then the mat should be connected to ground as well. Alan N1AL - Original Message - From: "Philip Townsend Lontz" To: "Fred Smith" Cc: Sent: Wednesday, December 05, 2012 2:32 PM Subject: Re: [Elecraft] ESD Protection for K3 Assembly I connect mine to my station ground... If there is zero lightning! Sent, as to how? Who cares! On Dec 5, 2012, at 3:04 PM, Fred Smith wrote: Jay most have a snap on them that snaps to the one on the mat like it. Then the mat attaches to the ground. Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jay Krishna Sent: Wednesday, December 05, 2012 3:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] ESD Protection for K3 Assembly Hi all, I received my K3 kit yesterday and am setting up to start assembly. I bought an ESD mat and a wrist band. I was wondering what I should connect the alligator clip from the wrist band to, for best protection? Thanks, Jay (KD6AMA) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2634/5438 - Release Date: 12/05/12 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] ESD Protection for K3 Assembly
I connect mine to my station ground... If there is zero lightning! Sent, as to how? Who cares! On Dec 5, 2012, at 3:04 PM, Fred Smith wrote: > Jay most have a snap on them that snaps to the one on the mat like it. Then > the mat attaches to the ground. > > Fred/N0AZZ > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jay Krishna > Sent: Wednesday, December 05, 2012 3:34 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] ESD Protection for K3 Assembly > > > Hi all, > > I received my K3 kit yesterday and am setting up to start assembly. I bought > an ESD mat and a wrist band. I was wondering what I should connect the > alligator clip from the wrist band to, for best protection? > > Thanks, > > Jay (KD6AMA) > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2221 / Virus Database: 2634/5438 - Release Date: 12/05/12 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] ESD Protection for K3 Assembly
Jay most have a snap on them that snaps to the one on the mat like it. Then the mat attaches to the ground. Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jay Krishna Sent: Wednesday, December 05, 2012 3:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] ESD Protection for K3 Assembly Hi all, I received my K3 kit yesterday and am setting up to start assembly. I bought an ESD mat and a wrist band. I was wondering what I should connect the alligator clip from the wrist band to, for best protection? Thanks, Jay (KD6AMA) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2634/5438 - Release Date: 12/05/12 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
