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Old 02-27-2016, 08:41 PM   #1
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Would this size panel fit??

We are going to be picking up a 2005 31D classis we bought in April and have a couple questions on size of solar panels that might go on top.

When we looked at the unit earlier this month I did use a ladder to look on top to see what I could see but did not take the time to measure anything.

I was looking at getting 2 to 3 to 4 195 watt 24v panels from place in florida when we go down to pick unit up. I do believe there is space for at least 4 panels which measure 62 tall, 31 wide and 1.5 thick.

I was hoping someone with this or any unit can confirm they would most likely fit on top.. I know there is a cover over the front and rear fans, the AC and all up there.

While this will be done in phases I wanted to go with 24 volt panels to keep wire size and weight down as much as possible. I have been looking at the bluesky 3024I controller with the IPN PRO remote display and at some point changing out the existing inverter controller to magnum unit to power all 120v outlets.

the batteries are standard fare 12v RV type we are looking to go with t-105 golf cart batteries 6 volt and at some point in the future, when they get more in my price range, lithium batteries.

EDIT: here a intresting view on how you can run AC with batteries.. http://www.gonewiththewynns.com/off-...r-conditioning
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Old 02-27-2016, 09:28 PM   #2
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Quote:
Originally Posted by carl2591 View Post
We are going to be picking up a 2005 31D classis we bought in April and have a couple questions on size of solar panels that might go on top.

When we looked at the unit earlier this month I did use a ladder to look on top to see what I could see but did not take the time to measure anything.

I was looking at getting 2 to 3 to 4 195 watt 24v panels from place in florida when we go down to pick unit up. I do believe there is space for at least 4 panels which measure 62 tall, 31 wide and 1.5 thick.

I was hoping someone with this or any unit can confirm they would most likely fit on top.. I know there is a cover over the front and rear fans, the AC and all up there.

While this will be done in phases I wanted to go with 24 volt panels to keep wire size and weight down as much as possible. I have been looking at the bluesky 3024I controller with the IPN PRO remote display and at some point changing out the existing inverter controller to magnum unit to power all 120v outlets.

the batteries are standard fare 12v RV type we are looking to go with t-105 golf cart batteries 6 volt and at some point in the future, when they get more in my price range, lithium batteries.

EDIT: here a intresting view on how you can run AC with batteries.. http://www.gonewiththewynns.com/off-...r-conditioning
Be VERY CAREFUL when sizing panels for the roof of a moving vehicle. Your foray into 'residential' panels might not provide you with the system longevity that you seek.

Larger, residential panels are NOT rated for the vibration and jostling that they will receive when placed on a moving platform; they are designed for a specific wind load maximum on a static surface…..'A NON-MOVING ROOF' . Cracks and crazing of the surface glass are common in larger sized panels (over 160 watts (58" x 26") due to frame flex, which is why we limit the size of the panels we use to 160 watts. Over 25 years in the RV solar business has revealed this to us.

And remember, the Wynns are sponsored by Go Power and have a bit of bias in their 'opinions'. One should keep that in mind when viewing their promotional videos.
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Old 02-28-2016, 01:07 AM   #3
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The Renology 12V, 100W panels deliver maximum power at about 19 V. i mounted four on my 2015 Classic in a series/parallel arrangement. I also use the Blue Sky 3024 controller with the IPN pro remote and reused the existing solar pre-wire. it's been working well.
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Old 02-28-2016, 11:23 AM   #4
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I see what you are saying.. and having heard that before as well. the reason was to get 24v vs 12v system panels. there used to be a couple of guys that made them but thus far I have not been able to find any in the smaller size.

and as for the wynns I am not sure "who" supports them and go power may but for the most part is seems they are not aligned to one brand, heck even handy bob has a beef with GO or "NO" Power as he like to call them and like you have a bit of experience with different solar units.

on the note of residential panels not being rated for RV usage I was not aware there was an actual rating agency that could determine is one panel is rated for RV vs residential usage.

I know it would make sense a small panel would be more adverst to movements but could not a larger panel be fitted with supports on the long side to help prevent the up and down movement you get with uneven roads and such.??

Some bar stock of alum with screws to attach to existing frame might be just the deal.



Quote:
Originally Posted by lewster View Post
Be VERY CAREFUL when sizing panels for the roof of a moving vehicle. Your foray into 'residential' panels might not provide you with the system longevity that you seek.

Larger, residential panels are NOT rated for the vibration and jostling that they will receive when placed on a moving platform; they are designed for a specific wind load maximum on a static surface…..'A NON-MOVING ROOF' . Cracks and crazing of the surface glass are common in larger sized panels (over 160 watts (58" x 26") due to frame flex, which is why we limit the size of the panels we use to 160 watts. Over 25 years in the RV solar business has revealed this to us.

And remember, the Wynns are sponsored by Go Power and have a bit of bias in their 'opinions'. One should keep that in mind when viewing their promotional videos.
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2-24-16 got a 2005 Classic 31D
Timeshare owner/user since '99
TUG2.net check it out for good rental deals
2003 F-250 SD, CC, 7.3L PowerStroke
WBCCI#1691, Piedmont Unit #161, Region #3
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Old 02-28-2016, 03:09 PM   #5
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Carl,

You seek advise and I gave you MY PROFESSIONAL ADVICE. I am not an amateur or DIY solar installer. I place upwards of 40 complete solar charging systems on RVs annually, with the propensity of the work on Airstream trailers.

I also base my advise on the almost 30 years of specific RV Solar experience from AM Solar. If it's been done…..THEY have tried it!

If you have your mind set, WHY ASK ???????????
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Old 02-29-2016, 07:40 AM   #6
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lew,
i appreciate your advise
thanks

Quote:
Originally Posted by lewster View Post
Carl,

You seek advise and I gave you MY PROFESSIONAL ADVICE. I am not an amateur or DIY solar installer. I place upwards of 40 complete solar charging systems on RVs annually, with the propensity of the work on Airstream trailers.

I also base my advise on the almost 30 years of specific RV Solar experience from AM Solar. If it's been done…..THEY have tried it!

If you have your mind set, WHY ASK ???????????
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Carl, Raleigh NC
2-24-16 got a 2005 Classic 31D
Timeshare owner/user since '99
TUG2.net check it out for good rental deals
2003 F-250 SD, CC, 7.3L PowerStroke
WBCCI#1691, Piedmont Unit #161, Region #3
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Old 02-29-2016, 08:07 AM   #7
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I am a DIY solar installer (on my own trailers only). Have done a good job on both trailers. But first, did much "homework" and took the great advice freely given by professionals such as Lewster.
Don't screw it up.


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Old 02-29-2016, 11:46 AM   #8
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Listen to Lew or the folks who live under the pv systems they engineer!
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