AeroElectric-List Digest Archive

Sat 09/16/17


Total Messages Posted: 5



Today's Message Index:
----------------------
 
     1. 03:43 PM - Comm Radio Mic Cable -> Audio Panel (Art Zemon)
     2. 04:11 PM - GFCI Breaker keeps tripping (Non Aviation) (donjohnston)
     3. 05:18 PM - Re: Comm Radio Mic Cable -> Audio Panel (don van santen)
     4. 05:49 PM - Re: GFCI Breaker keeps tripping (Non Aviation) (Charlie England)
     5. 06:23 PM - Re: GFCI Breaker keeps tripping (Non Aviation) (C&K)
 
 
 


Message 1


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    Time: 03:43:15 PM PST US
    From: Art Zemon <art@zemon.name>
    Subject: Comm Radio Mic Cable -> Audio Panel
    Folks, I'm hoping that someone here knows the answer quicker than I can get an answer from VAL Avionics, since it is a weekend. My VAL COM 2000 radio shows microphone connections for - Mic Key - Mic Audio - Mic GND - Shield tied to Mic GND (grounded at one end only) My PS Engineering audio panel shows microphone connections for - Mic Key - Mic Audio - Shield (grounded at one end only) What do I do with the Mic GND? Is tying it to the shield and grounding it at one end sufficient? -- Art Z. -- https://CheerfulCurmudgeon.com/ *"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel*


    Message 2


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    Time: 04:11:00 PM PST US
    Subject: GFCI Breaker keeps tripping (Non Aviation)
    From: "donjohnston" <don@velocity-xl.com>
    My current shop was built two years ago. All the 120 circuits have GFCI breakers. Specifically Siemens type QPF, 20a. About a month ago, whenever I went into the shop, one of the breakers would be tripped. The only thing on that circuit is a lathe and work light. I unplugged them and it would be tripped the next morning. I swapped the circuit with a different breaker and the same breaker kept tripping. So it would appear that I've got a bad breaker. I went to Home Depot and got a new one ($53!!! :x ). All good now. Except now there's a breaker on a completely different circuit tripping. This one only stays set for about an hour before tripping (with nothing connected to the circuit). I did a quick google and it appears that this is common and referred to as "nuisance tripping". Does anyone have any suggestions on how to resolve it without dropping another $53? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472926#472926


    Message 3


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    Time: 05:18:28 PM PST US
    From: don van santen <donvansanten@gmail.com>
    Subject: Re: Comm Radio Mic Cable -> Audio Panel
    Art, I talked to PSE and they said to either leave the mic lo disconnected at both ends or connect as you did at radio end and connect to the ground wire at the PSE end. The shield connects to the rest of the PSE shields. No double ended shield connections. Don On Sep 16, 2017 15:47, "Art Zemon" <art@zemon.name> wrote: Folks, I'm hoping that someone here knows the answer quicker than I can get an answer from VAL Avionics, since it is a weekend. My VAL COM 2000 radio shows microphone connections for - Mic Key - Mic Audio - Mic GND - Shield tied to Mic GND (grounded at one end only) My PS Engineering audio panel shows microphone connections for - Mic Key - Mic Audio - Shield (grounded at one end only) What do I do with the Mic GND? Is tying it to the shield and grounding it at one end sufficient? -- Art Z. -- https://CheerfulCurmudgeon.com/ *"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel*


    Message 4


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    Time: 05:49:21 PM PST US
    Subject: Re: GFCI Breaker keeps tripping (Non Aviation)
    From: Charlie England <ceengland7@gmail.com>
    Sure=2E $7 breaker=2E :-) =81=A3Charlie=8B On Sep 16, 2017, 6:14 PM, at 6:14 PM, donjohnston <don@velocity-xl=2Ecom> wrote: >--> AeroElectr ic-List message posted by: "donjohnston" ><don@velocity-xl=2Ecom> > >My cur rent shop was built two years ago=2E All the 120 circuits have >GFCI break ers=2E Specifically Siemens type QPF, 20a=2E > >About a month ago, whenev er I went into the shop, one of the breakers >would be tripped=2E The only thing on that circuit is a lathe and work >light=2E I unplugged them and i t would be tripped the next morning=2E I >swapped the circuit with a diffe rent breaker and the same breaker kept >tripping=2E So it would appear that I've got a bad breaker=2E > >I went to Home Depot and got a new one ($53 !!! :x )=2E All good now=2E > >Except now there's a breaker on a comple tely different circuit >tripping=2E This one only stays set for about an h our before tripping >(with nothing connected to the circuit)=2E > >I did a quick google and it appears that this is common and referred to >as "nuis ance tripping"=2E > >Does anyone have any suggestions on how to resolve it without dropping >another $53? > > >Read this topic online here: > >ht tp://forums=2Ematronics=2Ecom/viewtopic=2Ephp?p=472926#472926 > > =========== t Email Forum - Search & Download, 7-Day Browse, Chat, FAQ, ch more: ctric-List ================ MATRONICS WEB FORUMS - Forums! ======== /wiki=2Ematronics=2Ecom ================== - List Contribution Web Site - t! --> http://www=2Ematronics=2Ecom/contribution =


    Message 5


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    Time: 06:23:01 PM PST US
    Subject: Re: GFCI Breaker keeps tripping (Non Aviation)
    From: C&K <yellowduckduo@gmail.com>
    Any chance of condensation or water leakage? I've also seen tripping issues when mice get at the wiring. Ken On 16/09/2017 8:47 PM, Charlie England wrote: > Sure. $7 breaker. :-) > > Charlie > On Sep 16, 2017, at 6:14 PM, donjohnston <don@velocity-xl.com > <mailto:don@velocity-xl.com>> wrote: > > > My current shop was built two years ago. All the 120 circuits have GFCI breakers. Specifically Siemens type QPF, 20a. > > About a month ago, whenever I went into the shop, one of the breakers would be tripped. The only thing on that circuit is a lathe and work light. I unplugged them and it would be tripped the next morning. I swapped the circuit with a different breaker and the same breaker kept tripping. So it would appear that I've got a bad breaker. > > I went to Home Depot and got a new one ($53!!! :x ). All good now. > > Except now there's a breaker on a completely different circuit tripping. This one only stays set for about an hour before tripping (with nothing connected to the circuit). > > I did a quick google and it appears that this is common and referred to as "nuisance tripping". > > Does anyone have any suggestions on how to resolve it without dropping another $53? > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=472926#472926atronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Naa > href="http://www.matronics.com/contribution">http://www.matronics.com/contribution > <http://forums.matronics.com/viewtopic.php?p=472926#472926> > ------------------------------------------------------------------------ > >




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