Today's Message Index:
----------------------
1. 12:35 AM - Auto Response: Connecting small wire to large terminal (Todd Bristol)
2. 01:01 AM - Re: Connecting small wire to large terminal (Werner Schneider)
3. 01:06 AM - Re: Connecting small wire to large terminal (Werner Schneider)
4. 06:22 AM - Re: OV protection circuit design (Charlie England)
5. 06:30 AM - Re: Connecting small wire to large terminal (Charlie England)
6. 06:46 AM - Re: Connecting small wire to large terminal (Sebastien)
7. 07:19 AM - Re: Connecting small wire to large terminal (David Saylor)
8. 08:58 AM - Re: OV protection circuit design (user9253)
9. 09:07 AM - Re: Connecting small wire to large terminal (Lyn Robertson)
10. 09:27 AM - Re: Re: OV protection circuit design (Sebastien)
11. 09:45 AM - Re: Connecting small wire to large terminal (argoldman@aol.com)
12. 09:51 AM - Re: Re: OV protection circuit design (Charlie England)
13. 09:56 AM - Re: Re: New role for the E-Bus? (Robert L. Nuckolls, III)
14. 10:30 AM - Re: Re: OV protection circuit design (Charles Kuss)
15. 04:05 PM - Re: Connecting small wire to large terminal (Robert L. Nuckolls, III)
16. 07:06 PM - Re: Re: OV protection circuit design (Robert L. Nuckolls, III)
17. 07:50 PM - Re: Re: OV protection circuit design (Sebastien)
18. 08:01 PM - Re: Re: OV protection circuit design (Robert L. Nuckolls, III)
19. 08:10 PM - Re: Re: OV protection circuit design (Charlie England)
20. 08:37 PM - Re: Re: OV protection circuit design (Sebastien)
Message 1
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| Subject: | Connecting small wire to large terminal |
Thank you for your email but I will have limited email and phone access bet
ween Feb 26 and March 1. =EF=BD I will return all my phone calls and ema
ils after March 2nd. =EF=BDIn case of emergencies, please contact Rodney
at 480-217-5555. THANK YOU!
Message 2
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| Subject: | Re: Connecting small wire to large terminal |
https://www.steinair.com/product-category/terminals-tape/page/2/?filter_gauge=18-22-ga
On 27.02.2020 06:55, Lyn Robertson wrote:
> ............. The problem is that the supply wire is 20 gauge and the
> solenoid terminal is a 5/16 stud. I have been unable to find a ring
> terminal connector that will fit both the wire and the solenoid
> terminal. .......................
Message 3
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| Subject: | Re: Connecting small wire to large terminal |
https://bandc.com/product/insulated-ring-terminal-10-22-awg/
Choose the .31 terminal here a package of 10
so my favorite two suppliers both do have them :)
On 27.02.2020 06:55, Lyn Robertson wrote:
> ........... The problem is that the supply wire is 20 gauge and the
> solenoid terminal is a 5/16 stud. I have been unable to find a ring
> terminal connector that will fit both the wire and the solenoid
> terminal. ................................
Message 4
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| Subject: | Re: OV protection circuit design |
I'm designing the electrical system for my aircraft (a Zenith STOL CH750) b
ased on Z-12 (dual alternator, single battery)=2E The primary alternator is
a B&C SD-20 controlled by their LR3C=2E The stby alt is the PM unit built
into the Jabiru 3300 engine, and which is managed by a "kubota" style regul
ator as supplied with the Jabiru firewall-forward kit=2E
The LR-3 contain
s an OV protection mechanism which will protect against the SD-20 going pos
tal, whereas for the stby alt it will be a separate OV Module=2E In each ca
se the OV protection shorts the supply to ground and trips a 5A CB=2E Most
of the Z figures show a fuselink at the bus, which I presume is to protect
the segment of wire between the bus and the circuit breaker=2E
The Z diag
rams show a variety of wire sizes in the OV circuit (for example, Z-20 show
s 16, 20, and 22AWG segments all in series) while others (e=2Eg=2E, Z-12) s
how consistent AWG throughout=2E I can't figure out why they vary so much,
and I'm hoping I can get some feedback on my preliminary design=2E Here is
what I am thinking:
=EF=BC
I sized the main alt wires based on B&C's L
R3C wiring diagram which shows 18AWG for the field circuit=2E
The power wi
re sizes for the stby alt are taken from Z-20, and the stby control circuit
is sized based on the 20AWG wires on the B&C OVM-14 module (and availabili
ty of their 24AWG fuselink kit)=2E The relay draws 0=2E5A=2E
I'd apprecia
te any comments=2E
Thanks=2E
Hi Pat,
I had the same questions when I fi
rst looked at the drawings years ago=2E There's a good reason for the vario
us wire sizes=2E 22link to 18wire keeps link size manageable, then the 5A b
reaker protects the smaller wire=2E
BTW, you might need to look at the OV
circuit=2E I think that the alt output (regulator out) needs a separate wir
e to the bus=2E As drawn, alt output feeds through the 5A breaker=2E The OV
circuit should only connect to the relay coil=2E
Charlie
=81=A3Sent f
rom BlueMail =8B
On Feb 27, 2020, 1:06 AM, at 1:06 AM, Pat Little <r
oughleg@gmail=2Ecom> wrote:
>I'm designing the electrical system for my air
craft (a Zenith STOL
>CH750)
>based on Z-12 (dual alternator, single batter
y)=2E The primary alternator
>is
>a B&C SD-20 controlled by their LR3C=2E T
he stby alt is the PM unit built
>into the Jabiru 3300 engine, and which is
managed by a "kubota" style
>regulator as supplied with the Jabiru firewal
l-forward kit=2E
>
>The LR-3 contains an OV protection mechanism which will
protect against
>the
>SD-20 going postal, whereas for the stby alt it will
be a separate OV
>Module=2E In each case the OV protection shorts the supp
ly to ground and
>trips a 5A CB=2E Most of the Z figures show a fuselink at
the bus, which
>I
>presume is to protect the segment of wire between the b
us and the
>circuit
>breaker=2E
>
>The Z diagrams show a variety of wire si
zes in the OV circuit (for
>example,
>Z-20 shows 16, 20, and 22AWG segments
all in series) while others
>(e=2Eg=2E,
>Z-12) show consistent AWG through
out=2E I can't figure out why they vary
>so
>much, and I'm hoping I can get
some feedback on my preliminary design=2E
>Here
>is what I am thinking:
>[
image: image=2Epng]
>I sized the main alt wires based on B&C's LR3C wiring
diagram which
>shows
>18AWG for the field circuit=2E
>The power wire sizes
for the stby alt are taken from Z-20, and the stby
>control circuit is size
d based on the 20AWG wires on the B&C OVM-14
>module
>(and availability of
their 24AWG fuselink kit)=2E The relay draws 0=2E5A=2E
>
>I'd appreciate an
y comments=2E
>Thanks=2E
Message 5
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| Subject: | Re: Connecting small wire to large terminal |
Quickest is to fill the extra space with extra strands from larger wire=2E
=81=A3Sent from BlueMail =8B
On Feb 27, 2020, 1:06 AM, at 1:06
AM, Lyn Robertson <lyn=2Erobertson@gmail=2Ecom> wrote:
>I am building an R
V14A and plan to install dual P-mags=2E In the
>drawings,
>power for the P-
mags is shown as coming directly from the switched side
>of
>the master sol
enoid=2E The problem is that the supply wire is 20 gauge
>and
>the solenoi
d terminal is a 5/16=9D stud=2E I have been unable to find a
>ring
>t
erminal connector that will fit both the wire and the solenoid
>terminal=2E
>Currently, the only thing on the master solenoid terminal is a
>1/2
=9Dx0=2E060
>solid copper buss bar about 4=9D long that connects to t
he starter
>solenoid=2E
>
>This easiest solution seems to be to drill a hol
e in the buss bar and
>connect the P-mag lead to it with #6 hardware=2E Do
es anyone see any
>problem with this? I guess I should mention that I am u
sing the
>Advanced
>Control Module (ACM) with electronic circuit breakers f
rom Advanced
>Flight
>Systems for power distribution and, as a result, don
=99t have direct
>access
>to the main buss as I would in a more conve
ntional design=2E Access to
>power
>upstream of the ACM is limited to the
master solenoid location
>mentioned or
>at the input power connection to th
e ACM itself=2E
>
>Any advice is greatly appreciated=2E Thanks!
>
>Lyn Robe
rtson
>Corvallis, OR
Message 6
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| Subject: | Re: Connecting small wire to large terminal |
Or one of these?
https://m.aircraftspruce.ca/catalog/elpages/ring320572.php?clickkey=7519
On Thu, Feb 27, 2020, 06:34 Charlie England <ceengland7@gmail.com> wrote:
> Quickest is to fill the extra space with extra strands from larger wire.
>
>
> Sent from BlueMail <http://www.bluemail.me/r?b=15726>
> On Feb 27, 2020, at 1:06 AM, Lyn Robertson <lyn.robertson@gmail.com>
> wrote:
>>
>> I am building an RV14A and plan to install dual P-mags. In the drawings,
>> power for the P-mags is shown as coming directly from the switched side
of
>> the master solenoid. The problem is that the supply wire is 20 gauge an
d
>> the solenoid terminal is a 5/16=9D stud. I have been unable to fin
d a ring
>> terminal connector that will fit both the wire and the solenoid terminal
.
>> Currently, the only thing on the master solenoid terminal is a 1/2
=9Dx0.060
>> solid copper buss bar about 4=9D long that connects to the starter
solenoid.
>>
>> This easiest solution seems to be to drill a hole in the buss bar and
>> connect the P-mag lead to it with #6 hardware. Does anyone see any
>> problem with this? I guess I should mention that I am using the Advance
d
>> Control Module (ACM) with electronic circuit breakers from Advanced Flig
ht
>> Systems for power distribution and, as a result, don=99t have dire
ct access
>> to the main buss as I would in a more conventional design. Access to po
wer
>> upstream of the ACM is limited to the master solenoid location mentioned
or
>> at the input power connection to the ACM itself.
>>
>> Any advice is greatly appreciated. Thanks!
>>
>> Lyn Robertson
>> Corvallis, OR
>>
>
Message 7
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| Subject: | Re: Connecting small wire to large terminal |
https://www.steinair.com/product/22-18-ga-red-ring-516/
Or S814 from B&C
On Thu, Feb 27, 2020 at 6:51 AM Sebastien <cluros@gmail.com> wrote:
> Or one of these?
>
> https://m.aircraftspruce.ca/catalog/elpages/ring320572.php?clickkey=751
9
>
> On Thu, Feb 27, 2020, 06:34 Charlie England <ceengland7@gmail.com> wrote:
>
>> Quickest is to fill the extra space with extra strands from larger wire.
>>
>>
>>
>> Sent from BlueMail <http://www.bluemail.me/r?b=15726>
>> On Feb 27, 2020, at 1:06 AM, Lyn Robertson <lyn.robertson@gmail.com>
>> wrote:
>>>
>>> I am building an RV14A and plan to install dual P-mags. In the drawings
,
>>> power for the P-mags is shown as coming directly from the switched side
of
>>> the master solenoid. The problem is that the supply wire is 20 gauge a
nd
>>> the solenoid terminal is a 5/16=9D stud. I have been unable to fi
nd a ring
>>> terminal connector that will fit both the wire and the solenoid termina
l.
>>> Currently, the only thing on the master solenoid terminal is a 1/2
=9Dx0.060
>>> solid copper buss bar about 4=9D long that connects to the starte
r solenoid.
>>>
>>> This easiest solution seems to be to drill a hole in the buss bar and
>>> connect the P-mag lead to it with #6 hardware. Does anyone see any
>>> problem with this? I guess I should mention that I am using the Advanc
ed
>>> Control Module (ACM) with electronic circuit breakers from Advanced Fli
ght
>>> Systems for power distribution and, as a result, don=99t have dir
ect access
>>> to the main buss as I would in a more conventional design. Access to p
ower
>>> upstream of the ACM is limited to the master solenoid location mentione
d or
>>> at the input power connection to the ACM itself.
>>>
>>> Any advice is greatly appreciated. Thanks!
>>>
>>> Lyn Robertson
>>> Corvallis, OR
>>>
>>
Message 8
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| Subject: | Re: OV protection circuit design |
I suggest buying a fuse block that holds 15 or 20 fuses. A builder once said
to install a fuse block that holds twice as many fuses as you anticipate
needing, because you will need them. Every single load, no matter how
small, should have its own unique fuse.
Then replace the fuse-links with 30 amp fuses. Doing that will simplify the
wiring. Looking at Z-20, I suspect the intent was two different wire sizes, with
one a typo. If a 30 amp fuse is used instead of a fuse-link, then I would use
22
AWG for all wires in the field circuit. 22 AWG is good for 7 amps. It takes 40
amps to melt 22 wire.
Charlie, the alternator B lead is separate and not shown on the diagram.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=495012#495012
Message 9
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| Subject: | Re: Connecting small wire to large terminal |
Wow! I feel a little silly. I did look for the 5/16" ring terminals
before I wrote my email and convinced there were none to be found. Now,
they seem to be everywhere! I am not sure how I could have missed them.
Thank you all for the links and for taking time to answer my question.
Your help is truly appreciated.
Lyn
On Thu, Feb 27, 2020 at 6:51 AM Sebastien <cluros@gmail.com> wrote:
> Or one of these?
>
> https://m.aircraftspruce.ca/catalog/elpages/ring320572.php?clickkey=751
9
>
> On Thu, Feb 27, 2020, 06:34 Charlie England <ceengland7@gmail.com> wrote:
>
>> Quickest is to fill the extra space with extra strands from larger wire.
>>
>>
>>
>> Sent from BlueMail <http://www.bluemail.me/r?b=15726>
>> On Feb 27, 2020, at 1:06 AM, Lyn Robertson <lyn.robertson@gmail.com>
>> wrote:
>>>
>>> I am building an RV14A and plan to install dual P-mags. In the drawings
,
>>> power for the P-mags is shown as coming directly from the switched side
of
>>> the master solenoid. The problem is that the supply wire is 20 gauge a
nd
>>> the solenoid terminal is a 5/16=9D stud. I have been unable to fi
nd a ring
>>> terminal connector that will fit both the wire and the solenoid termina
l.
>>> Currently, the only thing on the master solenoid terminal is a 1/2
=9Dx0.060
>>> solid copper buss bar about 4=9D long that connects to the starte
r solenoid.
>>>
>>> This easiest solution seems to be to drill a hole in the buss bar and
>>> connect the P-mag lead to it with #6 hardware. Does anyone see any
>>> problem with this? I guess I should mention that I am using the Advanc
ed
>>> Control Module (ACM) with electronic circuit breakers from Advanced Fli
ght
>>> Systems for power distribution and, as a result, don=99t have dir
ect access
>>> to the main buss as I would in a more conventional design. Access to p
ower
>>> upstream of the ACM is limited to the master solenoid location mentione
d or
>>> at the input power connection to the ACM itself.
>>>
>>> Any advice is greatly appreciated. Thanks!
>>>
>>> Lyn Robertson
>>> Corvallis, OR
>>>
>>
Message 10
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| Subject: | Re: OV protection circuit design |
What is the disadvantage to having separate loads on the same fuse? I have
many instrument loads sharing fuses.
On Thu, Feb 27, 2020, 09:05 user9253 <fransew@gmail.com> wrote:
>
> I suggest buying a fuse block that holds 15 or 20 fuses. A builder once
> said
> to install a fuse block that holds twice as many fuses as you anticipate
> needing, because you will need them. Every single load, no matter how
> small, should have its own unique fuse.
> Then replace the fuse-links with 30 amp fuses. Doing that will simplify
> the
> wiring. Looking at Z-20, I suspect the intent was two different wire
> sizes, with
> one a typo. If a 30 amp fuse is used instead of a fuse-link, then I would
> use 22
> AWG for all wires in the field circuit. 22 AWG is good for 7 amps. It
> takes 40
> amps to melt 22 wire.
> Charlie, the alternator B lead is separate and not shown on the diagram.
>
> --------
> Joe Gores
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=495012#495012
>
>
Message 11
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| Subject: | Re: Connecting small wire to large terminal |
Easier than that is just to strip a longer amount and fold the wire on itse
lf to get the proper thickness and crimp.
Be aware that the wire, as it emerges out of the crimp will probably be sma
ller than the insulation crimp will appropriately protect so use some heat
shrink or other protective mechanism to prevent separation of this importan
t wire.
Rich
-----Original Message-----
From: Charlie England <ceengland7@gmail.com>
Sent: Thu, Feb 27, 2020 8:28 am
Subject: Re: AeroElectric-List: Connecting small wire to large terminal
Quickest is to fill the extra space with extra strands from larger wire.
Sent from BlueMail On Feb 27, 2020, at 1:06 AM, Lyn Robertson <lyn.robertso
n@gmail.com> wrote:
I am building an RV14A and plan to install dual P-mags. In the drawings, po
wer for the P-mags is shown as coming directly from the switched side of th
e master solenoid.=C2- The problem is that the supply wire is 20 gauge an
d the solenoid terminal is a 5/16=9D stud. I have been unable to find
a ring terminal connector that will fit both the wire and the solenoid ter
minal.=C2- Currently, the only thing on the master solenoid terminal is a
1/2=9Dx0.060 solid copper buss bar about 4=9D long that connec
ts to the starter solenoid.=C2-
This easiest solution seems to be to drill a hole in the buss bar and conne
ct the P-mag lead to it with #6 hardware.=C2- Does anyone see any problem
=C2-with this?=C2- I guess I should mention that I am using the Advance
d Control Module (ACM) with electronic circuit breakers from Advanced Fligh
t Systems for power distribution and, as a result, don=99t have direc
t access to the main buss as I would in a more conventional design.=C2- A
ccess to power upstream of the ACM is limited to the master solenoid locati
on mentioned or at the input power connection to the ACM itself.=C2-
Any advice is greatly appreciated. Thanks!
Lyn RobertsonCorvallis, OR
Message 12
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| Subject: | Re: OV protection circuit design |
Oops, danger of working from a phone screen=2E=2E=2E
=81=A3Sent from Bl
ueMail =8B
On Feb 27, 2020, 12:04 PM, at 12:04 PM, user9253 <fransew
@gmail=2Ecom> wrote:
fransew@gmail=2Ecom>
>
>I suggest buying a fuse block that holds 15 or 20 f
uses=2E A builder
>once said
>to install a fuse block that holds twice as
many fuses as you
>anticipate
>needing, because you will need them=2E Ev
ery single load, no matter how
>small, should have its own unique fuse=2E
>Then replace the fuse-links with 30 amp fuses=2E Doing that will
>simplif
y the
>wiring=2E Looking at Z-20, I suspect the intent was two different
wire
>sizes, with
>one a typo=2E If a 30 amp fuse is used instead of a fu
se-link, then I
>would use 22
>AWG for all wires in the field circuit=2E
22 AWG is good for 7 amps=2E It
>takes 40
>amps to melt 22 wire=2E
>Charl
ie, the alternator B lead is separate and not shown on the
>diagram=2E
>
>-
-------
>Joe Gores
>
>
>Read this topic online here:
>
>http://forums
=2Ematronics=2Ecom/viewtopic=2Ephp?p=495012#495012
>
>
=======
his Month --
= November is the Annual List Fund Raiser=2E Click on
tribution link below to find out more about
ree Incentive Gifts provided
ntribution Web Site:
ibution
-Matt Dralle, List Admin=2E
=======
m -
any List utilities such as List Un/Subscription,
wnload, 7-Day Browse, Chat, FAQ,
>
============
B FORUMS -
====
some info to the Matronics Email List Wiki!
onics=2Ecom
==============
tribution Web Site -
-Matt Dralle, List Admin=2E
www=2Ematronics=2Ecom/contribution
======================
Message 13
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| Subject: | Re: New role for the E-Bus? |
>As I said in the reply to Bob, most of the loads in the drawing are
>'artifacts' of copy/paste operations from a basic AEC drawing to my
>Paint program. The only items of significance for our discussion at
>the moment are the two alternators and the way they connect to the
>system, vs connecting both to the main bus as shown in other AEC drawings.
>
>I'll ponder the bus tie issue. The reason it's there is a convenient
>way to get alternator/battery to the main bus if there's a failure
>in the master control path causing the master contactor to open.
Is there anyone on this list who has experienced
battery contactor failure in flight? I've had
two or three crap but all manifested during
engine cranking.
Even if you did drop the contactor, the alternator
will continue to supply power to the bus . . .
you wouldn't know it was bad until on the
ground . . . probably at engine shut down
when electro-whizzies go dark with the
battery switch still on.
Just found your drawing . . . my bad.
Was down with the crud last weekend, got behind
in my conversations then we had a REALLY busy day
on the EMS crews yesterday . . . finally had time
this morning to sit at the keyboard and ponder a
drawing that was inspired by this thread and has
roots in the old Z8/20.
Here is the work in progress:
https://tinyurl.com/wvmc68v
Only 2 switches. Airplane flies with either switch
in the full up position. No combination of switch
positions is potentially hazardous.
Switches side-by-side . . . easy full shut down
with one motion.
All normal and abnormal operating modes are
pre-flight testable.
Two engine driven power sources, both capable
of delivering power to both buses depending
on switch positions . . .
No always-hot b-leads while parked . . .
Let's massage this a bit . . . perhaps it
should become the more practical successor
to Z13/20
Bob . . .
Message 14
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| Subject: | Re: OV protection circuit design |
The downside is if one instrument's electrical circuit shorts out and blows the
fuse you lose more than one instrument or one device. Modern ATO style fuses
are cheap and light so why not put everything on its own fuse?
Charlie
Sent from Yahoo Mail on Android
On Thu, Feb 27, 2020 at 1:06 PM, Charlie England<ceengland7@gmail.com> wrote:
Oops, danger of working from a phone screen...
Sent from BlueMail On Feb 27, 2020, at 12:04 PM, user9253 <fransew@gmail.com> wrote:
I suggest buying a fuse block that holds 15 or 20 fuses. A builder once said
to install a fuse block that holds twice as many fuses as you anticipate
needing, because you will need them. Every single load, no matter how
small, should have its own unique fuse.
Then replace the fuse-links with 30 amp fuses. Doing that will simplify the
wiring. Looking at Z-20, I suspect the intent was two different wire sizes, with
one a typo. If a 30 amp fuse is used instead of a fuse-link, then I would use
22
AWG for all wires in the field circuit. 22 AWG is good for 7 amps. It takes 40
amps to melt 22 wire.
Charlie, the alternator B lead is separate and not shown on the diagram.
--------
Joe Gores
Read this topic online here:
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Message 15
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| Subject: | Re: Connecting small wire to large terminal |
At 08:28 AM 2/27/2020, you wrote:
>Quickest is to fill the extra space with extra strands from larger wire.
>
>
>Sent from <http://www.bluemail.me/r?b=15726>BlueMail
>On Feb 27, 2020, at 1:06 AM, Lyn Robertson
><<mailto:lyn.robertson@gmail.com>lyn.robertson@gmail.com> wrote:
>I am building an RV14A and plan to install dual
>P-mags. In the drawings, power for the P-mags is
>shown as coming directly from the switched side
>of the master solenoid. The problem is that the
>supply wire is 20 gauge and the solenoid
>terminal is a 5/16=9D stud. I have been unable
>to find a ring terminal connector that will fit
>both the wire and the solenoid terminal.
Shoot me a mailing address and I'll send you
some . . .
Emacs!
Bob . . .
Message 16
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| Subject: | Re: OV protection circuit design |
At 11:25 AM 2/27/2020, you wrote:
>What is the disadvantage to having separate loads on the same fuse?
>I have many instrument loads sharing fuses.
A failure in one takes down all . . .
Bob . . .
Message 17
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| Subject: | Re: OV protection circuit design |
So for low failure, low consequence items no need for a separate fuse for
each item?
I don't mind losing my headset power and intercom at the same time. Or my
nav and landing lights. Certainly not enough to find a place to add a third
fuse holder. I guess it would be nice if I had the room though.
On Thu, Feb 27, 2020, 19:14 Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 11:25 AM 2/27/2020, you wrote:
>
> What is the disadvantage to having separate loads on the same fuse? I have
> many instrument loads sharing fuses.
>
>
> A failure in one takes down all . . .
>
>
> Bob . . .
>
Message 18
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| Subject: | Re: OV protection circuit design |
At 11:25 AM 2/27/2020, you wrote:
>What is the disadvantage to having separate loads on the same fuse?
>I have many instrument loads sharing fuses.
A failure in one takes down all . . .
Bob . . .
Message 19
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| Subject: | Re: OV protection circuit design |
That's right=2E
One practical downside is that the fuse must be big enough
for all loads running at once, and that means that all feeders protected by
the fuse must be big enough that the fuse can protect any individual wire
=2E
=81=A3Sent from BlueMail =8B
On Feb 27, 2020, 10:55 PM, at
10:55 PM, Sebastien <cluros@gmail=2Ecom> wrote:
>So for low failure, low co
nsequence items no need for a separate fuse
>for
>each item?
>
>I don't min
d losing my headset power and intercom at the same time=2E Or
>my
>nav and
landing lights=2E Certainly not enough to find a place to add a
>third
>fus
e holder=2E I guess it would be nice if I had the room though=2E
>
>
>On Th
u, Feb 27, 2020, 19:14 Robert L=2E Nuckolls, III <
>nuckolls=2Ebob@aeroelec
tric=2Ecom> wrote:
>
>> At 11:25 AM 2/27/2020, you wrote:
>>
>> What is the
disadvantage to having separate loads on the same fuse? I
>have
>> many in
strument loads sharing fuses=2E
>>
>>
>> A failure in one takes down all
=2E =2E =2E
>>
>>
>> Bob =2E =2E =2E
>>
Message 20
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| Subject: | Re: OV protection circuit design |
Thank you both. While we are on the topic. Most of my circuits are 22 gauge
wire protected by 3A fuses. Ordered them on ebay and similar to this
offering:
https://www.ebay.ca/itm/50pcs-3A-Car-Fuse-Auto-Truck-SUV-Fuses-Mini-Blade-Fuse-Kits-APM-ATM-32V/283081816514?hash=item41e8fdb9c2:g:ByYAAOSwuOpbYdEl
They haven't had any unexpected failures but I haven't tested them. Think I
should blow 10% of the batch to see what the performance is? I have a
variable power supply so I could set a certain amperage and voltage and
record how long it takes to blow. How are these things tested?
On Thu, Feb 27, 2020 at 8:14 PM Charlie England <ceengland7@gmail.com>
wrote:
> That's right.
> One practical downside is that the fuse must be big enough for all loads
> running at once, and that means that all feeders protected by the fuse must
> be big enough that the fuse can protect any individual wire.
>
> Sent from BlueMail <http://www.bluemail.me/r?b=15726>
> On Feb 27, 2020, at 10:55 PM, Sebastien <cluros@gmail.com> wrote:
>>
>> So for low failure, low consequence items no need for a separate fuse for
>> each item?
>>
>> I don't mind losing my headset power and intercom at the same time. Or my
>> nav and landing lights. Certainly not enough to find a place to add a third
>> fuse holder. I guess it would be nice if I had the room though.
>>
>>
>> On Thu, Feb 27, 2020, 19:14 Robert L. Nuckolls, III <
>> nuckolls.bob@aeroelectric.com> wrote:
>>
>>> At 11:25 AM 2/27/2020, you wrote:
>>>
>>> What is the disadvantage to having separate loads on the same fuse? I
>>> have many instrument loads sharing fuses.
>>>
>>>
>>> A failure in one takes down all . . .
>>>
>>>
>>> Bob . . .
>>>
>>
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