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Old 01-11-2008, 11:53 AM   #1
bilby05
 
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1962 24' Tradewind
1962 24' Tradewind
Canyon , Texas
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new fuse block

Here I go again,

Since I am replumbing, I figured I would clean up the electrical bits in the rear bay of our '69 Sovereign. Each little job leads to a bigger job.:-)

I want to remove the old huge steel fuse block (glass fuses) and replace it with a more modern ATO/ATC type block. I have been looking for one that will handle the 6 circuits, one of which is 40 amp. Seems like everything I look at says "max individual circuit load 30 amp." I know that the owners manual that I have does not give details on the fusing and I imagine the "service manual," that begins with 1974, probably wouldn't be of much help either. Two of them have springs inside them, time delay? or self resetting?

Any suggestions would be appreciated.
thanks, bill b.
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Old 01-11-2008, 12:25 PM   #2
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Bill, The ones with the spring inside are slo-blo fuses. The 40 amp service is probably 2- 20 amps tied together for an a/c unit. I'm sure that someone with a trailer like yours will give you a better idea what is what but I think that this will get you started. Happy Trails, Ed
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Old 01-11-2008, 01:46 PM   #3
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Bill,
I am doing the same job of changing out the 12 Volt distribution panel.

Check out this thread:
http://www.airforums.com/forums/f449...ion-38781.html

I am purchasing this one because it has a 30 amp circuit like my old one:
Magnetek Fuse Board

You may want to look at his one too:
9 Position Fuse Block
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Old 01-11-2008, 02:42 PM   #4
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You could always keep the block you have and change to these fuses.





AGC to ATO/ATC or MINI Fuse Converter2400J


Package of 10
Plugs in to existing 'glass' AGC fuse blocks, and use more common and modern ATC/ATO style fuses. Can also be used with our ATC style circuit breakers as well. Fuse not included.
dw(ld('LD_PRODUCT_CLICKHERE',''))More details...
$19.95

Take it a bit further and additionally add these reset breakers.






Panel Mount Circuit Breakers
Panel Mount Thermal Type 3 Circuit Breaker


Manufactured by Cooper Bussman
These circuit breakers are designed to be panel mounted. They are thermal type 3 manual resetable, and are available in 10 amp, 15 amp, 20 amp, and 30 amp ratings. Meets UL standard 1077 and CSA C22.2 No. 5.1-M91a. Rated up to 32 volts DC.

$5.72
10 Amp (CB-PM3-10)
15 Amp (CB-PM3-15)
20 Amp (CB-PM3-20)
30 Amp (CB-PM3-30)
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Old 01-11-2008, 06:53 PM   #5
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Wow ganglin, was thinking of upgrading our panel, but just going to order those, what a great idea, thanks for sharing. I would be interested to know in 69 what each fuse should be rated at (from top to bottom etc) and which ones are supposed to have breakers vs fuses etc (not assuming the po was smart enough to replace the old fuse with the same size after looking at their wiring skills). Anybody know?
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Old 01-11-2008, 09:34 PM   #6
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If it helps any - the 71 manual shows:

the two feed lines to the batteries off the block at 40 amp

the fuse that feeds the power on indicator light on the control panel is 1 amp

all other fuses are 20 amp
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Old 01-11-2008, 09:39 PM   #7
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thats what our fuses are if I remember correctly. I'll check tomorrow, thanks!
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Old 01-16-2008, 05:15 PM   #8
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Thanks for the info

Lots of good ideas there. After looking around a bit I think the newer fuse blocks are often less sturdy than the older ones. I really like that gadget that allows one to use the new type fuses in the old block. That may be the way to go.
thanks again for the ideas.
bill b.
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Old 01-16-2008, 06:47 PM   #9
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Well I have also been searching the forums for many many hours and enjoyed every minute. This is what I came up with on fuses and breakers. A 40 amp AGU on the Neg. side and 50 amp auto reset on the Pos. side. Heres some pics of my new setup, even though its cold here I'm working on the install now. Thanks again to Randy at Best, Inland Andy and also chuck for some answers. Robert
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