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Topic ClosedSolar, 12volt questions - Event Date: 20 Jan 2017 - 25 Jan 2017
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mcarter View Drop Down
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Joined: 07 Apr 2016
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Posts: 3419 		Direct Link To This Post Calendar Event: Solar, 12volt questions
    Posted: 22 Jan 2017 at 1:22pm
Cool, thanks.
Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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CharlieM View Drop Down
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Posts: 1797 		Direct Link To This Post Posted: 22 Jan 2017 at 11:10am
Originally posted by Keith-N-Dar

P=I X E  Ohms Law.
I this case power = 20 amps X 12 volts or 240 watts.  With the line loss inherent with low voltage DC don't plan on much from that solar install.

Not clear what you are saying here. Twenty amps for a typical 5 hour sunny day gives you 100 AH which is 3-6 times the typical camper's usage.
Charlie
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OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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Posts: 1108 		Direct Link To This Post Posted: 22 Jan 2017 at 9:31am
Originally posted by Keith-N-Dar

P=I X E  Ohms Law.
I this case power = 20 amps X 12 volts or 240 watts.  With the line loss inherent with low voltage DC don't plan on much from that solar install.

What solar install are you referring to? 
Cliff & Raelynn
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Keith-N-Dar View Drop Down
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Posts: 1447 		Direct Link To This Post Posted: 22 Jan 2017 at 9:28am
P=I X E  Ohms Law.
I this case power = 20 amps X 12 volts or 240 watts.  With the line loss inherent with low voltage DC don't plan on much from that solar install.
Keith-N-Dar
Boris & Betty (Boston Terriers)
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Posts: 1108 		Direct Link To This Post Posted: 22 Jan 2017 at 7:55am
Originally posted by puudged

LOL, I will make sure my geekies know what they are doing😫 My main go to guy installs electronics in fire engines and police vehicles... Cross my fingers that he knows what he is doing:) Thanks again for helping me out!


Yes, sounds like you have a good geek there. 
Cliff & Raelynn
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Posts: 1108 		Direct Link To This Post Posted: 22 Jan 2017 at 7:51am
Originally posted by mcarter

Podster,

Comparing notes. Where did you mount yours in 178? I mounted mine in the panel, near door, that is the dinette passenger seat. I can open door and look at 12v status and use USB and 12v charge with device resting on dinette cushion or table. Drilled a hole thru floor of front storage compartment, and ran 14 gauge wire into floor of electrics bay and used spare fuse for connection point. Works great, silicone holes and secured wiring below TT and in front storage area. From what I have seen the 179 is much easier to access.

I try to use what I call the service panel for all things utility... 

Here is a pic...
Cliff & Raelynn
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puudged View Drop Down
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Posts: 5 		Direct Link To This Post Posted: 21 Jan 2017 at 7:27pm
LOL, I will make sure my geekies know what they are doing😫 My main go to guy installs electronics in fire engines and police vehicles... Cross my fingers that he knows what he is doing:) Thanks again for helping me out!
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Posts: 3419 		Direct Link To This Post Posted: 21 Jan 2017 at 5:02pm
Podster,

Comparing notes. Where did you mount yours in 178? I mounted mine in the panel, near door, that is the dinette passenger seat. I can open door and look at 12v status and use USB and 12v charge with device resting on dinette cushion or table. Drilled a hole thru floor of front storage compartment, and ran 14 gauge wire into floor of electrics bay and used spare fuse for connection point. Works great, silicone holes and secured wiring below TT and in front storage area. From what I have seen the 179 is much easier to access.
Mike Carter
2015 178
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Posts: 1108 		Direct Link To This Post Posted: 21 Jan 2017 at 12:22pm
Originally posted by Pod People

the other posts have answered your 12 volt receptacle questions.

...I'm not sure what the 20 watt designation is referring to. 


OP stated 20 amps, not 20 watts... 
Cliff & Raelynn
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Posts: 1108 		Direct Link To This Post Posted: 21 Jan 2017 at 12:21pm
Originally posted by puudged

Thank you for the link! I just ordered these items, and will check around with my "geek" friends for some professional help!


You're welcome. I'm not familiar with the 172, but if you can mount the device in an area near the power panel where it is convenient to use, and draw power directly from a new run to the 12v side of the power panel, that would be best. You can certainly tap in to other wires as well, but depending on what you tap...it may limit the amount you can draw, but usually plenty power available for charging stuff, no problem. If you choose not to make a new run to the power panel, make sure you install an inline fuse on the power side of the tap and use a fuse rated appropriately. 

If one of your geek friends reads this and says "huh" don't let them do it... :-) 
Cliff & Raelynn
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