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Old 04-19-2012, 10:13 AM   #1
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Charge wire on 7-pin, what demands does AS need and how does this charge

I just installed new jacketed 2wire 2 12 one blue and one black wire. Both 12 gauge. Did trailer supply give me bougus wire, I asked for 10gauge 1.70 foot could not find any. Say's they wire all there installed with this 2 12. Should I rip all this out and return it. Right now it is connected to 30amp breaker problem 12gauge is only rated up to 20amps.
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Old 04-19-2012, 10:21 AM   #2
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Due to the length and resistance of all the wire from the front of the TV to the batteries on the AS, you will seldom get a charge of more than 10 to 12 amps max. Six to nine amps is probably more typical. So, if it were mine, I would not worry about it.
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Old 04-19-2012, 11:31 AM   #3
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charging from the TV

Check out the following: http://www.airforums.com/forums/f449...s-78925-2.html panel #21.
the 7 pin connector is woefully undersized to recharge the AS batts from your Tow Vehicle.
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Old 04-19-2012, 11:48 AM   #4
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That being said, I have never had an issue replenishing a pair of group 29 batteries, 50% depleated during an 8 - 10 hour....say 400 mile drive.
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Old 04-19-2012, 03:19 PM   #5
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I just installed new jacketed 2wire 2 12 one blue and one black wire. Both 12 gauge. Did trailer supply give me bougus wire, I asked for 10gauge 1.70 foot could not find any.
I just got a roll of 10 gauge marine duplex wire from a surplus place. It's out there, but you have to look. Copper prices are high so it's going to cost you. Trailer places usually don't have anything larger than 12 gauge.

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Say's they wire all there installed with this 2 12.
They lack both imagination and experience.

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Should I rip all this out and return it.
Depends what you want. Larger wire will give you more charging. I have 8 gauge in my suburban, and 10 gauge in my pickup.

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Right now it is connected to 30amp breaker problem 12gauge is only rated up to 20amps.
The idea that 12 gauge wire is suitable only for up to 20 amps is based on U.S. residential electrical codes which were based on 1920s insulation technology using asbestos-reinforced rubber.

The practical capacity in automotive and trailer wiring depends on a bunch of things, among them the heat the insulation can withstand and whether the location where the wire is installed is cool or hot. It is not unusual to fuse 12 gauge automotive circuits at 30 amps. In fact, in some circumstances, higher ratings are used.
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Old 04-19-2012, 10:06 PM   #6
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you might find that buying a set of jumper cables is cheaper than buying just the wire.
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Old 04-20-2012, 08:38 AM   #7
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How does TV battery charge up AS

I hope these are wired directly battery to battery. Stopped by Home Depot and looked at there wire. They do have 8 Gauge wire in bulk section priced 65cents foot. How would this type wire do on automotive. Less strands than typical wire. Also for single axle trailer brakes would 12 gauge be large enough for brake controller. 17ft run
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Old 04-20-2012, 08:51 AM   #8
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Becuase of the 'skin effect' stranded wire offers less resistance (thus more current flow) than a single conductor wire of the same cross section....I think if youll be just fine with either 8 or 10.
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Old 04-20-2012, 08:57 AM   #9
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Becuase of the 'skin effect' stranded wire offers less resistance (thus more current flow) than a single conductor wire of the same cross section....I think if youll be just fine with either 8 or 10.
I agree, however don't expect a tremendous charge rate. If you see anything over 5 amps or so consider it a bonus.
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Old 04-20-2012, 09:02 AM   #10
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I found this wire $10bucks

Cadence 8 gauge 20feet for amp installs



CADENCE 8 GAUGE 20 FEET RED AMP POWER/GROUND WIRE (613815568254) | eBay
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Old 04-20-2012, 09:38 AM   #11
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I agree, however don't expect a tremendous charge rate. If you see anything over 5 amps or so consider it a bonus.

Yep...5A may be about all you get...maybe a bit more...i wonder if it would be much better if the batteries were relocated to the front of the trailer...? eliminating 20'+ of wire....
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