----------------------------------------------------------
                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Sat 09/16/17: 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  _____________________________________


Time: 03:43:15 PM PST US
From: Art Zemon 
Subject: AeroElectric-List: 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  _____________________________________


Time: 04:11:00 PM PST US
Subject: AeroElectric-List: GFCI Breaker keeps tripping (Non Aviation)
From: "donjohnston" 


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  _____________________________________


Time: 05:18:28 PM PST US
From: don van santen 
Subject: Re: AeroElectric-List: 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"  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  _____________________________________


Time: 05:49:21 PM PST US
Subject: Re: AeroElectric-List: GFCI Breaker keeps tripping (Non Aviation)
From: Charlie England 

Sure=2E $7 breaker=2E :-)

=81=A3Charlie=8B

On Sep 16, 2017, 6:14
 PM, at 6:14 PM, donjohnston  wrote:
>--> AeroElectr
ic-List message posted by: "donjohnston"
>
>
>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  _____________________________________


Time: 06:23:01 PM PST US
Subject: Re: AeroElectric-List: GFCI Breaker keeps tripping (Non Aviation)
From: C&K 


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  > 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
>     
>     ------------------------------------------------------------------------
>
>


 

-------------------------------------------------------------------------------------
                       Other Matronics Email List Services
-------------------------------------------------------------------------------------
Post A New Message               aeroelectric-list@matronics.com
UN/SUBSCRIBE                     http://www.matronics.com/subscription
List FAQ                         http://www.matronics.com/FAQ/AeroElectric-List.htm
Web Forum Interface To Lists     http://forums.matronics.com
Matronics List Wiki              http://wiki.matronics.com
Full Archive Search Engine       http://www.matronics.com/search
7-Day List Browse                http://www.matronics.com/browse/aeroelectric-list
Browse Digests                   http://www.matronics.com/digest/aeroelectric-list
Browse Other Lists               http://www.matronics.com/browse
Live Online Chat!                http://www.matronics.com/chat
Archive Downloading              http://www.matronics.com/archives
Photo Share                      http://www.matronics.com/photoshare
Other Email Lists                http://www.matronics.com/emaillists
Contributions                    http://www.matronics.com/contribution
-------------------------------------------------------------------------------------

These Email List Services are sponsored solely by Matronics and through the 
generous Contributions of its members.