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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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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Subject: | GFCI Breaker keeps tripping (Non Aviation) |
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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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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Subject: | Re: GFCI Breaker keeps tripping (Non Aviation) |
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
>
>
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Message 5
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Subject: | Re: GFCI Breaker keeps tripping (Non Aviation) |
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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