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06-21-2010, 06:37 AM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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Do you need a doubler on the firewall for the ANLs?
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06-21-2010, 07:05 AM
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Join Date: Dec 2006
Location: UK
Posts: 368
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I'd say YES to a doubler
Bob,
I've supported mine with a doubler. Has a heavy cable attached.
In fact, my AFS ammeter shunt and ANL share a common doubler.
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Steve Hutt
West Sussex, UK
RV-7 G-HUTY (not flying yet)
( Tip-UP / TMX-IO-360-M1B / Hartzell 7497-2 / 1x LSE PLASMA III / Dual AF4500's / AF-Pilot AP / 695 )
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06-21-2010, 07:24 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by Bob Collins
Do you need a doubler on the firewall for the ANLs?
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I did........
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06-22-2010, 10:04 AM
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Join Date: Apr 2006
Location: Vancouver island, BC Canada
Posts: 385
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Quote:
Originally Posted by Bob Collins
Do you need a doubler on the firewall for the ANLs?
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Depends where and how it is mounted. I used a pair of large washers and mine is mounted near thick metal.
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Jim Green
RV7 tip up
IO360 Whirlwind 200RV
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06-22-2010, 04:10 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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I'm glad someone started this post, it made it obvious to me that I'd neglected to provide protection for the wire going from the switched contactor to the VP-50 (my electrical buss).
So last night I started putting in that second one. Oh, and I also lamented not putting a doubler plate on when I put the first ANL in. So this gave me the opportunity to do it right (by my definition, YMMV) and silence one of the many voices in my head.
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10-22-2012, 03:41 PM
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Join Date: Oct 2005
Location: San Antonio, TX
Posts: 281
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Is this where you are referring to?
I am trying to design my electrical right now using Z-13/8. I want to make sure I understand where you guys are referring to putting in a second limiter, is it where the red arrow indicates in my drawing? Also, are you using 2AWG or 4AWG wire for this connection?
Thanks,
Matt
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11-11-2012, 11:02 AM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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Matt, its a little late now, but I think you are correct in your picture. People are protecting the wire that powers the buss bar with an ANL 60, along with the ANL 60 that is between the starter solenoid and the alternator (the B lead off the alternator). I am certainly no expert in these matters, so you get what you pay for.
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12-19-2012, 02:04 PM
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Join Date: Jul 2009
Location: Wilsonville, OR
Posts: 453
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Where do the current limiters go?
I'm designing my electrical system and am considering adding current limiters to the system. I'm curious where exactly you folks are locating them. My assumption is the first one goes between the ALT B-Lead and the switched side of the Battery solenoid and the second one would go between the battery solenoid and the Starter solenoid. Am I correct? I've seen some guys use 3 current limiters and I'm curious where that one would go...?
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Trevor Conroy CFII, MEI
Airbus Pilot
N781TD
RV-7
First Flight - April 12, 2015
Construction Log
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12-19-2012, 02:43 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Alt B lead and on the feed to the main bus.
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12-19-2012, 06:22 PM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Quote:
Originally Posted by Paul Austin
Hi
I am just at the stage of connecting the main alt wire. I am a bit confused as to the purpose of the anl60 in the system is it to protect wire going from the alt to the firewall or the wire from the firewall to the power buss in the cockpit as it seems when connected like a lot of the ones on this site that there is still a direct route for the power direct to the battery battery and if the wire from the master relay to the power buss shorts out the full current of the battery would flow with no circuit protection. Any info would be greatly appreciated..  
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Paul,
The fuse will only protect the wiring [and if it's a fast acting fuse, like the ANL 60, your avionics] that are downstream from the fuse. Therefore, it can not protect the wire between the alternator and the fuse block. FYI, I really like the ANL 60 fuse. However, I'm not wild about the very "open" Amp brand ANL fuse holder. There are better fuse holder alternatives out there. Littelfuse makes a very nice, completely insulated fuse holder, which with a slight mod, can hold the Amp ANL 60 fuses. I would suggest the you peruse the link below, for more info.
http://www.vansairforce.com/communit...ga+fuse+holder
Charlie
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