Today's Message Index:
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1. 09:27 AM - Combining alternator wires? (donjohnston)
2. 09:47 AM - Re: Combining alternator wires? (Robert L. Nuckolls, III)
3. 11:20 AM - Re: Combining alternator wires? (donjohnston)
4. 03:13 PM - Re: Re: Combining alternator wires? (Robert L. Nuckolls, III)
Message 1
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| Subject: | Combining alternator wires? |
I've looked through the archives because I'm sure this is in there, but I can't
find it.
I've got a Velocity-XL, 28v system, single battery (up front), dual alternators
(60a & 20a). The battery and starter contactors are both up front next to the
battery.
With respect to the B-leads from the two alternators, does each one need to have
a separate wire up to the nose? Or can I install a single wire from the firewall
to the front that both alternators can tie in to? If I can do the single
wire approach, would all three wires need protection with ANL current limiters,
or just the two lines from the alternators?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=404757#404757
Message 2
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| Subject: | Re: Combining alternator wires? |
At 11:26 AM 7/16/2013, you wrote:
>
>I've looked through the archives because I'm sure this is in there,
>but I can't find it.
>
>I've got a Velocity-XL, 28v system, single battery (up front), dual
>alternators (60a & 20a). The battery and starter contactors are both
>up front next to the battery.
>
>With respect to the B-leads from the two alternators, does each one
>need to have a separate wire up to the nose? Or can I install a
>single wire from the firewall to the front that both alternators can
>tie in to? If I can do the single wire approach, would all three
>wires need protection with ANL current limiters, or just the two
>lines from the alternators?
If it were my airplane, the starter contactor
would be as close as practical to the starter
on the firewall.
The starter contactor becomes a fat-wire tie
point to bring alternator b-leads to the bus
by tying their current limiters to the hot side of
the contactor.
So yes, the single wire approach
works for all three devices . . . a wire which
you already have in place.
Bob . . .
Message 3
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| Subject: | Re: Combining alternator wires? |
> The starter contactor becomes a fat-wire tie
> point to bring alternator b-leads to the bus
> by tying their current limiters to the hot side of
> the contactor.
Thanks!
Follow up question: I can't find a 20a current limiter for the backup alternator.
B&C only has them down to 40a. Do I use a regular 20a CB? Or look elsewhere
for a 20a current limiter?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=404768#404768
Message 4
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| Subject: | Re: Combining alternator wires? |
At 01:19 PM 7/16/2013, you wrote:
>
>
> > The starter contactor becomes a fat-wire tie
> > point to bring alternator b-leads to the bus
> > by tying their current limiters to the hot side of
> > the contactor.
>
>
>Thanks!
>
>Follow up question: I can't find a 20a current limiter for the
>backup alternator. B&C only has them down to 40a. Do I use a regular
>20a CB? Or look elsewhere for a 20a current limiter?
Use an ATC inline fuseholder with a 30
A fuse in it.
http://tinyurl.com/lusgrmw
I have these for sale at:
http://tinyurl.com/cgr42l5
you might find them in a local automotive
parts house.
Bob . . .
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