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Automotive blade fuses?
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peterlaurence6(at)gmail.c
Guest

Posted: Tue Jul 14, 2009 9:36 am Post subject: Automotive blade fuses?

Bob,  

   

The reason I asked this question was that a friend just installed an EFIS made by MGL. They recommend a slow blow fuse .  

   

I thought this was odd. Any ideas. My next inquiry will be with MGL.  

   

Thanks  

   

   

Peter Laurence  

         

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III

 Sent: Tuesday, July 14, 2009 12:37 PM

 To: aeroelectric-list(at)matronics.com

 Subject: RE: AeroElectric-List: Automotive blade fuses?  

  

   

At 10:44 AM 7/14/2009, you wrote:

 

   

--> AeroElectric-List message posted by: "plaurence" <peterlaurence6(at)gmail.com>

 

 Is there such a thing as a slo blow ATO fuse?  



   No. When you need slow-blow characteristics

   it's usually associated with hi-inrush and

   or wildly variable current demands. Pitot

   heaters, hydraulic pumps, etc come to mind.

   For this we recommend MANL style current

   limiters like . . .

 

 [img]cid:image001.jpg(at)01CA0487.14F2C130[/img]

 

 

   These have very long time constants.

 

 

 

     

       Bob . . .

 

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

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

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

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frank.hinde(at)hp.com
Guest

Posted: Tue Jul 14, 2009 9:55 am Post subject: Automotive blade fuses?

I don't know of anyone who put in anything other than the  standard ATO blade fuse in with an EFIS..My guess is MGL was speaking  generically. I would suggest going the next size up on th cable and installed  the rated fuse, you can always increase the fuse rating after if necessary..But  I really doubt and EFIS would have a hi enough in-rush current to blow a  standard fuse at the correct steady state rating.

  

 Frank



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

Sent: Tuesday, July 14, 2009 10:29 AM

To:  aeroelectric-list(at)matronics.com

Subject: RE: AeroElectric-List:  Automotive blade fuses?

 

  

Bob, 

  

The reason I asked this  question was that a friend just installed an EFIS made by MGL. They recommend a  slow blow fuse . 

  

I thought this was odd.  Any ideas. My next inquiry will be with MGL. 

  

Thanks 

  

  

Peter  Laurence 

     

 

From:  owner-aeroelectric-list-server(at)matronics.com  [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls,  III

Sent: Tuesday, July 14,  2009 12:37 PM

To:  aeroelectric-list(at)matronics.com

Subject: RE: Automotive  blade fuses?

 

  

At 10:44 AM 7/14/2009, you  wrote:



 

--> AeroElectric-List message posted by: "plaurence"  <peterlaurence6(at)gmail.com>



Is there such a thing as a slo blow ATO  fuse? 



  No. When you need slow-blow  characteristics

  it's usually associated with hi-inrush and

   or wildly variable current demands. Pitot

  heaters, hydraulic pumps,  etc come to mind.

  For this we recommend MANL style current

   limiters like . . .



[img]cid:814044917(at)14072009-1E25[/img]

  These have very  long time constants.



 

       Bob .  . .



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

        ( . . .  a long habit of not thinking    )

       ( a thing wrong, gives it a  superficial )

       ( appearance of being  right . . .        )

        (                                        )

        (                   -Thomas Paine 1776-  )

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

image001.jpg

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Filesize:

40.79 KB

Viewed:

7741 Time(s)

rmitch1(at)hughes.net
Guest

Posted: Tue Jul 14, 2009 12:13 pm Post subject: Automotive blade fuses?

Take a look at the RV-12, esp. the E-LSA version.  It is all fuses (no substitution allowed under E-LSA protocol, but, they use a type that lights up when blown.  How does that work?  

Bob Mitchell  

Lancair 320  

         

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III

 Sent: Tuesday, July 14, 2009 09:37

 To: aeroelectric-list(at)matronics.com

 Subject: RE: AeroElectric-List: Automotive blade fuses?  

  

   

At 10:44 AM 7/14/2009, you wrote:

 

   

--> AeroElectric-List message posted by: "plaurence" <peterlaurence6(at)gmail.com>

 

 Is there such a thing as a slo blow ATO fuse?  



   No. When you need slow-blow characteristics

   it's usually associated with hi-inrush and

   or wildly variable current demands. Pitot

   heaters, hydraulic pumps, etc come to mind.

   For this we recommend MANL style current

   limiters like . . .

 

 [img]cid:image001.jpg(at)01CA0484.655B0AE0[/img]

 

 

   These have very long time constants.

 

 

 

     

       Bob . . .

 

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

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

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

image001.jpg

Description:

Filesize:

40.79 KB

Viewed:

7740 Time(s)

frank.hinde(at)hp.com
Guest

Posted: Tue Jul 14, 2009 12:47 pm Post subject: Automotive blade fuses?

Led strapped across the terminals...When it is NOT blown  the LED is bypassed by the fuse..When it blows current flows thru the led to the  fault..Its a micro-amps so not enough current to heat the wire but enough to  light the led..Which essentially acts like a big resistor.

  

 Frank



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

Sent: Tuesday, July 14, 2009 1:10 PM

To:  aeroelectric-list(at)matronics.com

Subject: RE: AeroElectric-List:  Automotive blade fuses?

 

  

Take a look at the  RV-12, esp. the E-LSA version.  It is all fuses (no substitution allowed  under E-LSA protocol, but, they use a type that lights up when blown.  How  does that work? 

Bob  Mitchell 

Lancair  320 

     

 

From:  owner-aeroelectric-list-server(at)matronics.com  [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls,  III

Sent: Tuesday, July 14,  2009 09:37

To: aeroelectric-list(at)matronics.com

Subject: RE: Automotive  blade fuses?

 

  

At 10:44 AM 7/14/2009, you  wrote:



 

--> AeroElectric-List message posted by: "plaurence"  <peterlaurence6(at)gmail.com>



Is there such a thing as a slo blow ATO  fuse? 



  No. When you need slow-blow  characteristics

  it's usually associated with hi-inrush and

   or wildly variable current demands. Pitot

  heaters, hydraulic pumps,  etc come to mind.

  For this we recommend MANL style current

   limiters like . . .



[img]cid:080413120(at)14072009-1E2C[/img]

  These have very  long time constants.



 

       Bob .  . .



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

        ( . . .  a long habit of not thinking    )

       ( a thing wrong, gives it a  superficial )

       ( appearance of being  right . . .        )

        (                                        )

        (                   -Thomas Paine 1776-  )

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

image001.jpg

Description:

Filesize:

40.79 KB

Viewed:

7739 Time(s)

nuckolls.bob(at)aeroelect
Guest

Posted: Tue Jul 14, 2009 7:12 pm Post subject: Automotive blade fuses?

At 12:29 PM 7/14/2009, you wrote:

  	  Quote: 	
		   Bob,

  

 The reason I asked this question was that a friend just installed an EFIS made by MGL. They recommend a slow blow fuse .

  

 I thought this was odd. Any ideas. My next inquiry will be with MGL. 	


   Hmmmm . . . can't imagine why they would ask for

   one. Haven't had occasion to call one out in a new

   design for about 30 years. These are pretty much

   dim memories of another time. In glass 1/4 x 1-1/4

   fuses these are the MDL series. I've got a drawer

   full of various sizes that I'm NOT moving to the

   new shop in M.L.



 

        Bob . . .



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

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

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



     [quote][b]

etienne.phillips(at)gmail
Guest

Posted: Wed Jul 15, 2009 2:13 am Post subject: Automotive blade fuses?

Hi Justin

  

 They are available locally (as in Port Elizabeth) from Autozone... Not sure where abouts you are, but autozone is a chain store of sorts, so you may find them all over the country!

  

 Etienne

 2009/7/14 heisan <justin(at)expertron.co.za (justin(at)expertron.co.za)>

 [quote]--> AeroElectric-List message posted by: "heisan" <justin(at)expertron.co.za (justin(at)expertron.co.za)>

 

Thanks everybody.



When I asked around here, everybody uses glass fuses or breakers.  Two A&Ps I chatted to said blade fuses were a bad idea (basically because it is difficult to make the pretty!



Nice to know that they will work, and are safe to use.

 

Does anybody know of an on-line shop that sells decent blade fuse holders?  Options here are few and far between.



Thanks,

Justin





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=252936#252936

 h as List Un/Subscription,

 www.matronics.com/Navigator?AeroElectric-List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ronics.com/" target="_blank">http://forums.matronics.com

 Matt Dralle, List Admin.

 =====



[b]

longg(at)pjm.com
Guest

Posted: Wed Jul 15, 2009 5:41 am Post subject: Automotive blade fuses?

I’ve also seen these at Pep Boys if you’re on the east coast.  

   

Glenn  

     

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

 Sent: Wednesday, July 15, 2009 6:10 AM

 To: aeroelectric-list(at)matronics.com

 Subject: Re: Re: Automotive blade fuses?  

  

     

Hi Justin  

    

   

    

They are available locally (as in Port Elizabeth) from Autozone... Not sure where abouts you are, but autozone is a chain store of sorts, so you may find them all over the country!  

    

   

    

Etienne  

    

2009/7/14 heisan <justin(at)expertron.co.za (justin(at)expertron.co.za)>  

--> AeroElectric-List message posted by: "heisan" <justin(at)expertron.co.za (justin(at)expertron.co.za)>

 

 Thanks everybody.

 

 When I asked around here, everybody uses glass fuses or breakers.  Two A&Ps I chatted to said blade fuses were a bad idea (basically because it is difficult to make the pretty!

 

 Nice to know that they will work, and are safe to use.

 

 Does anybody know of an on-line shop that sells decent blade fuse holders?  Options here are few and far between.

 

 Thanks,

 Justin

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=252936#252936

 h as List Un/Subscription,

 www.matronics.com/Navigator?AeroElectric-List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ronics.com/" target="_blank">http://forums.matronics.com

 Matt Dralle, List Admin.

 =====

 

 

   

  

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      [quote][b]

heisan

Joined: 19 May 2008
Posts: 22

Posted: Wed Jul 15, 2009 11:17 am Post subject: Re: Automotive blade fuses?

Thanks for all the info.



I will try AutoZone locally on Friday.  If that doesn't work, I will order from one of the on-line shops.



You guys in the USA really have it all!



Thanks,

Justin

sarg314(at)gmail.com
Guest

Posted: Wed Jul 15, 2009 11:40 am Post subject: Automotive blade fuses?

Autozone has them, but only in values used commonly in cars.Â  For your plane you will need a lot of small values - 1 or 2 or 3 amps.Â  I doubt you'll find those at autozone or checker.Â  B&C Specialty has them.



 On Wed, Jul 15, 2009 at 12:17 PM, heisan <justin(at)expertron.co.za (justin(at)expertron.co.za)> wrote:

 	  Quote: 	
		   --> AeroElectric-List message posted by: "heisan" <justin(at)expertron.co.za (justin(at)expertron.co.za)>

 

 Thanks for all the info.

 

 I will try AutoZone locally on Friday. Â If that doesn't work, I will order from one of the on-line shops.

 

 You guys in the USA really have it all!

 

 Thanks,

 Justin

 

 

 

 

 	


-- 

Tom Sargent

  [quote][b]

etienne.phillips(at)gmail
Guest

Posted: Wed Jul 15, 2009 12:20 pm Post subject: Automotive blade fuses?

Hi all

When I suggested Autozone, I was referring to Autozone South Africa, not AutoZone USA. As Justin is a fellow Dark-Continent (Africa for those who are not familiar with the expression) dweller, I can appreciate the lack of local availability of certain seemingly easily obtainable aviation bits and pieces, unless you're happy spending 8-10 times the items value in shipping.

I'm pretty sure the smaller values are available, and certainly any cable fault will be able to pop a 5A fuse... If you want it to blow at a lower value than that, then you'll probably find those fuses to be a bit harder to find. But there's no reason you have to import the fuse holder from the opposite side of the planet just because that's where the fuses will eventually need to come from.

Etienne





On 15 Jul 2009, at 9:38 PM, thomas sargent wrote:

[quote]Autozone has them, but only in values used commonly in cars.  For your plane you will need a lot of small values - 1 or 2 or 3 amps.  I doubt you'll find those at autozone or checker.  B&C Specialty has them.



 On Wed, Jul 15, 2009 at 12:17 PM, heisan <justin(at)expertron.co.za (justin(at)expertron.co.za)> wrote:

 	  Quote: 	
		   --> AeroElectric-List message posted by: "heisan" <justin(at)expertron.co.za (justin(at)expertron.co.za)>

 

 Thanks for all the info.

 

 I will try AutoZone locally on Friday.  If that doesn't work, I will order from one of the on-line shops.

 

 You guys in the USA really have it all!

 

 Thanks,

 Justin

 

 

 

 

 	


-- 

Tom Sargent

  	  Quote: 	
		  



href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/contribution



	
[b]

BobsV35B(at)aol.com
Guest

Posted: Wed Jul 15, 2009 2:14 pm Post subject: Automotive blade fuses?

Good Evening Sarge,

  

 Do we really need fuses of that low an amperage?

  

 Seems to me that what we need to protect are the wires. Unless you have  awfully small diameter wires, five amp should be as small as you need. Five amp  will protect a number twenty-two wire. That is as small as I ever use!

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 7/15/2009 2:42:17 P.M. Central Daylight Time,  sarg314(at)gmail.com writes:

  	  Quote: 	
		  Autozone    has them, but only in values used commonly in cars.  For your plane you    will need a lot of small values - 1 or 2 or 3 amps.  I doubt you'll find    those at autozone or checker.  B&C Specialty has  them.



	


 Can love help you live longer? Find out now.

  [quote][b]

sarg314(at)gmail.com
Guest

Posted: Wed Jul 15, 2009 3:23 pm Post subject: Automotive blade fuses?

Well, yes, protecting the wire is the main task of the fuse.Â  But If I have a device that I know should only use a fraction of an amp (my avionics cooling fan for example) and it starts drawing 2 amps, there's probably something seriously wrong with it.Â  It will be toast long before the #22 wire (or a 5 amp fuse) ever burns up.Â  The little thing could melt itself on 2 measly amps.Â  So I put a 2 amp fuse on it.Â  That still protects the wire and will keep the smoke level down in the cockpit.Â  The fan is probably dead either way.Â  

 

On Wed, Jul 15, 2009 at 3:11 PM,  <BobsV35B(at)aol.com (BobsV35B(at)aol.com)> wrote:

 	  Quote: 	
		        Good Evening Sarge,

 Â 

 Do we really need fuses of that low an amperage?

 Â 

 Seems to me that what we need to protect are the wires. Unless you have  awfully small diameter wires, five amp should be as small as you need. Five amp  will protect a number twenty-two wire. That is as small as I ever use!

 Â 

 Happy Skies,

 Â 

 Old Bob

 Â 

  In a message dated 7/15/2009 2:42:17 P.M. Central Daylight Time,  sarg314(at)gmail.com (sarg314(at)gmail.com) writes:

  	  Quote: 	
		  Autozone    has them, but only in values used commonly in cars.Â  For your plane you    will need a lot of small values - 1 or 2 or 3 amps.Â  I doubt you'll find    those at autozone or checker.Â  B&C Specialty has  them.



	




  

	


-- 

Tom Sargent

  [quote][b]

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