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Need 1,2 & 3 amp fuses

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longg(at)pjm.com
Guest

Posted: Fri Nov 07, 2008 8:34 am Post subject: Need 1,2 & 3 amp fuses

Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

I've tried a number of auto stores, Walmart etc, but cannot find

anything below 5 amp.

Thanks,

Glenn

Do Not Archive

ceengland(at)bellsouth.ne
Guest

Posted: Fri Nov 07, 2008 8:41 am Post subject: Need 1,2 & 3 amp fuses

longg(at)pjm.com wrote:

 	  Quote: 	
		   



 Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

 I've tried a number of auto stores, Walmart etc, but cannot find

 anything below 5 amp.

 Thanks,

 Glenn

 Do Not Archive


	


If you're talking about the old 1/4x 1 1/4 inch glass fuses, try an 

electronics supply house. Blade type, you might have to resort to mail 

order.

harley(at)AgelessWings.co
Guest

Posted: Fri Nov 07, 2008 8:49 am Post subject: Need 1,2 & 3 amp fuses

Not sure whether you want the newer blade fuses, or the old standard tubular type, but Radio shack carries them both. Just checked online and they do indeed have them both from 1 amp and up. 

 

 Harley

  

 longg(at)pjm.com (longg(at)pjm.com) wrote: [quote]    	  Quote: 	
		  --> AeroElectric-List message posted by: <longg(at)pjm.com> (longg(at)pjm.com)



Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

I've tried a number of auto stores, Walmart etc, but cannot find

anything below 5 amp.

Thanks,

Glenn

Do Not Archive



  

Agelesswings certifies that no virus is in this incoming message.

Checked by AVG - http://www.avg.com 



  	
 [b]

mprather(at)spro.net
Guest

Posted: Fri Nov 07, 2008 9:02 am Post subject: Need 1,2 & 3 amp fuses

What size wire requires a fuse less than 5A?  Or is this for another

application?

Matt-



 	  Quote: 	
		   



 Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

 I've tried a number of auto stores, Walmart etc, but cannot find

 anything below 5 amp.

 Thanks,

 Glenn

 Do Not Archive

nuckolls.bob(at)cox.net
Guest

Posted: Fri Nov 07, 2008 9:22 am Post subject: Need 1,2 & 3 amp fuses

At 09:59 AM 11/7/2008 -0700, you wrote:

 	  Quote: 	
		  



What size wire requires a fuse less than 5A?  Or is this for another

application?

Matt-



 > 

 >

 > Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

 > I've tried a number of auto stores, Walmart etc, but cannot find

 > anything below 5 amp.


	


    5A is certainly adequate for protection of 22AWG wire

    which is the smallest practical feeder that should

    be tied to a bus.



    Having said that, it's useful to drop to still lower

    protection levels to extend protection to the interior

    of an appliance. This goes beyond the simple idea

    of protecting the airframe. The smaller sizes are

    not in common distribution. I used to stock 1, 2 and

    3A sizes. B&C still does at:



http://www.bandc.biz/cgi-bin/ez-catalog/cat_display.cgi?27X358218#S889-1



    You won't find them in auto parts stores but lots

    of folks offer them on the 'net. Do a Google on

    "ATC-1". "ATC-2" etc.



    Bob . . .

        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

rv8builder(at)earthlink.n
Guest

Posted: Fri Nov 07, 2008 9:28 am Post subject: Need 1,2 & 3 amp fuses

B & C Electic has the blade type fuses in amp ratings below 5 amps



Dale



--

longg(at)pjm.com
Guest

Posted: Fri Nov 07, 2008 11:04 am Post subject: Need 1,2 & 3 amp fuses

Thanks for the suggestions. I am looking for the ATC blade type. The key term is "on the street". I need them tomorrow. I'll try the Radio Shanty.



--

longg(at)pjm.com
Guest

Posted: Fri Nov 07, 2008 11:14 am Post subject: Need 1,2 & 3 amp fuses

Matt,



You must have one of those 48' Bonanzas  Many pieces of modern

equipment are now running well below 5 amps. My strobes, efis panels,

nav lights, trim, some radios, gauges, led lights and so on all run in

the 1-3 amp range. Pretty soon these things will run on batteries and

well just place a solar panel on the wind screen and fly above the

clouds.



Glenn



--

sportav8r(at)gmail.com
Guest

Posted: Fri Nov 07, 2008 11:33 am Post subject: Need 1,2 & 3 amp fuses

IIRC, fuses are sized to protect the wire, not the device.  Where are you finding wire gauges light enough to need 1, 2, or 3 A protection?  I've never encountered wire this small in experimental aviation except possibly a MAC trim servo, and for some reason never fused those wires.  Minds that need examining want to know...

 

-Bill B



On Fri, Nov 7, 2008 at 2:12 PM,  <longg(at)pjm.com (longg(at)pjm.com)> wrote:

[quote] --> AeroElectric-List message posted by: <longg(at)pjm.com (longg(at)pjm.com)>

 

 

Matt,

 

 You must have one of those 48' Bonanzas  Many pieces of modern

 equipment are now running well below 5 amps. My strobes, efis panels,

 nav lights, trim, some radios, gauges, led lights and so on all run in

 the 1-3 amp range. Pretty soon these things will run on batteries and

 well just place a solar panel on the wind screen and fly above the

 clouds.

 

 Glenn

 

 --

trigo(at)mail.telepac.pt
Guest

Posted: Fri Nov 07, 2008 12:10 pm Post subject: Need 1,2 & 3 amp fuses

Bill  

   

I am not an EE, as a matter of fact I’m a Civil Eng, but it seems to me that although fuses are designed to protect the wire, the current (which determines the fuse Amp) that runs through the wire depends on the device it serves.  

For example, when installing the GPSx96 in the panel the instructions call for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS) calls for 4A, and Flightcom 403 intercom call for AWG 20 or 22 wire and 1A breaker/fuse.  

   

Am I missing something?  

   

Carlos  

           

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Bill Boyd

 Sent: sexta-feira, 7 de Novembro de 2008 19:30

 To: aeroelectric-list(at)matronics.com

 Subject: Re: AeroElectric-List: Need 1,2 & 3 amp fuses  

  

   

IIRC, fuses are sized to protect the wire, not the device.  Where are you finding wire gauges light enough to need 1, 2, or 3 A protection?  I've never encountered wire this small in experimental aviation except possibly a MAC trim servo, and for some reason never fused those wires.  Minds that need examining want to know...

 

 -Bill B    

On Fri, Nov 7, 2008 at 2:12 PM, <longg(at)pjm.com (longg(at)pjm.com)> wrote:    

--> AeroElectric-List message posted by: <longg(at)pjm.com (longg(at)pjm.com)>  

  

Matt,

 

 You must have one of those 48' Bonanzas  Many pieces of modern

 equipment are now running well below 5 amps. My strobes, efis panels,

 nav lights, trim, some radios, gauges, led lights and so on all run in

 the 1-3 amp range. Pretty soon these things will run on batteries and

 well just place a solar panel on the wind screen and fly above the

 clouds.

 

 Glenn    



 --

larry(at)macsmachine.com
Guest

Posted: Fri Nov 07, 2008 5:20 pm Post subject: Need 1,2 & 3 amp fuses

Hi Glen,

I just purchased 2 Amp fuses from Home Depot, the electrical parts 

department.



Larry McFarland 601HDS at www.macsmachine.com

do not archive



longg(at)pjm.com wrote:

 	  Quote: 	
		   



 Does anyone know of a place to purchase 1,2 & 3 amp fuses on the street?

 I've tried a number of auto stores, Walmart etc, but cannot find

 anything below 5 amp.

 Thanks,

 Glenn

 Do Not Archive

nuckolls.bob(at)cox.net
Guest

Posted: Fri Nov 07, 2008 8:22 pm Post subject: Need 1,2 & 3 amp fuses

At 08:08 PM 11/7/2008 +0000, you wrote:



 	  Quote: 	
		  Bill



I am not an EE, as a matter of fact I m a Civil Eng, but it seems to me 

that although fuses are designed to protect the wire, the current (which 

determines the fuse Amp) that runs through the wire depends on the device 

it serves.



For example, when installing the GPSx96 in the panel the instructions call 

for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS) calls for 

4A, and Flightcom 403 intercom call for AWG 20 or 22 wire and 1A breaker/fuse.



Am I missing something?


	


    It's a matter of perspective. Folks who sell you an

    electro-whizzy would appreciate it if you did not

    power their 100 milliampere device with a 14AWG

    wire and 15A breaker. The flight safety guys wouldn't

    care, their job is to see that faults on the feeder

    don't unnecessarily increase risk to the airframe.



    But if the electro-whizzy shorts a 15-cent capacitor

    and burns a trace on a board, the repairs may be

    costly if not impossible. As a practical matter, you

    (as system integrator, owner and operator) can choose

    to run 14AWG wire for very low voltage drop and protect

    with a 1A fuse for ECB protection without insulting

    the bureaucrat or warranty service manager's sensibilities.

    In the final analysis, you're the one who does the

    implementation and is required to shoulder consequences.



    This is one feature of Greg Richter's one-size-fits-all

    philosophy of populating the power distribution with

    one value of protection and routing power all over the

    airplane on one size of wire. While it relieves the

    installer of having to make any decisions it

    keeps the thoughtful builder from tailoring system

    components to satisfy a variety of design goals.



    Bob . . .

ceengland(at)bellsouth.ne
Guest

Posted: Sat Nov 08, 2008 5:41 am Post subject: Need 1,2 & 3 amp fuses

Robert L. Nuckolls, III wrote:

 	  Quote: 	
		   

 <nuckolls.bob(at)cox.net>



 At 08:08 PM 11/7/2008 +0000, you wrote:



> Bill

>

> I am not an EE, as a matter of fact I m a Civil Eng, but it seems to 

> me that although fuses are designed to protect the wire, the current 

> (which determines the fuse Amp) that runs through the wire depends on 

> the device it serves.

>

> For example, when installing the GPSx96 in the panel the instructions 

> call for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS) 

> calls for 4A, and Flightcom 403 intercom call for AWG 20 or 22 wire 

> and 1A breaker/fuse.

>

> Am I missing something?



    It's a matter of perspective. Folks who sell you an

    electro-whizzy would appreciate it if you did not

    power their 100 milliampere device with a 14AWG

    wire and 15A breaker. The flight safety guys wouldn't

    care, their job is to see that faults on the feeder

    don't unnecessarily increase risk to the airframe.



    But if the electro-whizzy shorts a 15-cent capacitor

    and burns a trace on a board, the repairs may be

    costly if not impossible. As a practical matter, you

    (as system integrator, owner and operator) can choose

    to run 14AWG wire for very low voltage drop and protect

    with a 1A fuse for ECB protection without insulting

    the bureaucrat or warranty service manager's sensibilities.

    In the final analysis, you're the one who does the

    implementation and is required to shoulder consequences.



    This is one feature of Greg Richter's one-size-fits-all

    philosophy of populating the power distribution with

    one value of protection and routing power all over the

    airplane on one size of wire. While it relieves the

    installer of having to make any decisions it

    keeps the thoughtful builder from tailoring system

    components to satisfy a variety of design goals.



    Bob . . . 


	


It seems worth mentioning that in the situations mentioned & others like 

them, the manufacturer is saving himself the expense of building 

protection into his device and shifting responsibility for protection to 

the installer. Now, if something burns, he can blame *you* instead of 

accepting responsibility for his design.



Charlie

nuckolls.bob(at)cox.net
Guest

Posted: Sun Nov 09, 2008 6:29 am Post subject: Need 1,2 & 3 amp fuses

It seems worth mentioning that in the situations mentioned & others like 

them, the manufacturer is saving himself the expense of building protection 

into his device and shifting responsibility for protection to the 

installer. Now, if something burns, he can blame *you* instead of accepting 

responsibility for his design.



   That's a pretty broad brush my friend. Where is it

   written that the installer should not have to consider

   design limitations for an appliance's integration

   into the system?  Is it not a good idea to put say

   40A of protection on a 20A landing gear pump with

   the notion that a stalled motor will pop the breaker

   as opposed to burning wires in the motor? Should I

   decide to hang hang the 20A motor on a feeder

   protected at 100 amps, is it reasonable to demand

   or expect the motor supplier to include optimized

   protection inside the motor?



   While it is not the duty of the system integrator

   to discover and make adjustments for limitations

   imposed by a product's design, it IS A DUTY

   of designers to make those limitations known

   before the customer buys the product.



   Example. See . . .



http://www.aeroelectric.com/Catalog/AEC/9011/9011-700-1C.pdf



   I've called out 2A fuses that will open before

   traces internal to my product will burn. The risks

   for raising those to 5A are not great . . . but should

   I get one back for repairs and have to deal with

   a burned trace, am I ethically bound to "eat" those

   costs of repair because my design does not incorporate

   protection suited to 5A feeders (or Richter's 10A

   feeders)?



   That way, there are no surprises in what should be

   an honorable free-market exchange of value. The

   buyer has the option of deciding whether or not

   he will go to the effort to supply a 2A fuse

   before he buys my product. I've designed many

   products where there were fusible components

   within that prevented component failures

   from escalating repair costs. In this case it

   was attractive to use 2A protection OUTSIDE as

   opposed to INSIDE the box. I'll suggest there is

   no dishonor in expecting a customer to comply

   with installation recommendations as long as I make

   him aware of it before he hands me money and I

   hand him hardware.



   Bob . . .

echristley(at)nc.rr.com
Guest

Posted: Sun Nov 09, 2008 12:28 pm Post subject: Need 1,2 & 3 amp fuses

Carlos Trigo wrote:

 	  Quote: 	
		   Bill



  



 I am not an EE, as a matter of fact I'm a Civil Eng, but it seems to me that

 although fuses are designed to protect the wire, the current (which

 determines the fuse Amp) that runs through the wire depends on the device it

 serves.



 For example, when installing the GPSx96 in the panel the instructions call

 for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS) calls for

 4A, and Flightcom 403 intercom call for AWG 20 or 22 wire and 1A

 breaker/fuse.



  



 Am I missing something?



   


	


Not really. 



The device needs a certain amount of current.  This sets the lower limit 

of what size fuse you can use.  You can use a smaller fuse, but it's not 

much fun swapping blown fuses.



The wire can only carry a certain amount of current, determined by its 

diameter and length.  This sets the upper size of fuse that you can 

safely use.  You can use a larger fuse, but then you're really making 

your wire the fuse.



Between those limits is the headroom you have for making fuse rating 

choices. 



Choose to the low side if the device has a stable current draw, and you 

think a blown fuse might actually do something to save the device.  

Motors and lamps have high inrush currents, so aren't stable loads.  A 

fuse might do something to save a stalled motor, but it isn't going to 

do anything to save a lamp.



Choose to the high side for loads with high momentary currents, and 

loads that you willing to let sacrifice themselves for your safety or 

comfort.



-- 



http://www.ernest.isa-geek.org

longg(at)pjm.com
Guest

Posted: Mon Nov 10, 2008 7:48 am Post subject: Need 1,2 & 3 amp fuses

I am not an EE either, but I read directions pretty well (that makes me sound smart J). If Dynon says to use a 1 or 3 amp fuse, that’s what I use. With respect to the wire size, who cares, I am protecting the equipment first and the wire second. Remember, the wire size is max rating, not min rating.   

We are not talking about 550 kv lines here. I’m not worried about voltage drop across five feet of #22 wire. Just because a wire can handle 10 amps, doesn’t mean one should subject a  Dynon to 10 amps of unprotected power.  

   

If ones takes the approach of just throwing fuses at wire sizes you will become good friends with the radio shop attending to smoking radios.  

   

   

       

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Carlos Trigo

 Sent: Friday, November 07, 2008 3:09 PM

 To: aeroelectric-list(at)matronics.com

 Subject: RE: Need 1,2 & 3 amp fuses  

  

  

   

Bill  

   

I am not an EE, as a matter of fact I’m a Civil Eng, but it seems to me that although fuses are designed to protect the wire, the current (which determines the fuse Amp) that runs through the wire depends on the device it serves.  

For example, when installing the GPSx96 in the panel the instructions call for a 1A fuse or CB, and the AOA Cpu from Proprietary (now AFS) calls for 4A, and Flightcom 403 intercom call for AWG 20 or 22 wire and 1A breaker/fuse.  

   

Am I missing something?  

   

Carlos  

           

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Bill Boyd

 Sent: sexta-feira, 7 de Novembro de 2008 19:30

 To: aeroelectric-list(at)matronics.com

 Subject: Re: Need 1,2 & 3 amp fuses  

  

   

IIRC, fuses are sized to protect the wire, not the device.  Where are you finding wire gauges light enough to need 1, 2, or 3 A protection?  I've never encountered wire this small in experimental aviation except possibly a MAC trim servo, and for some reason never fused those wires.  Minds that need examining want to know...

 

 -Bill B    

On Fri, Nov 7, 2008 at 2:12 PM, <longg(at)pjm.com (longg(at)pjm.com)> wrote:    

--> AeroElectric-List message posted by: <longg(at)pjm.com (longg(at)pjm.com)>  

  

Matt,

 

 You must have one of those 48' Bonanzas  Many pieces of modern

 equipment are now running well below 5 amps. My strobes, efis panels,

 nav lights, trim, some radios, gauges, led lights and so on all run in

 the 1-3 amp range. Pretty soon these things will run on batteries and

 well just place a solar panel on the wind screen and fly above the

 clouds.

 

 Glenn    



 --

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