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Solar panel installation.

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 460
Forum Description: Model Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=14617
Printed Date: 27 March 2026 at 03:41
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: Solar panel installation.
Posted By: Sahinsair
Subject: Solar panel installation.
Date Posted: 10 May 2024 at 22:13
Hi guys we are getting our Hanse 460 at the and of May from Portoroz Slovenia! We'd like to install Solar Panels on the hardtop and are looking at our options in Adriatic /Ionian.  We will be heading south slowly slowly to Greece.  Although we have a generator, we plan to install Solar panels as soon as possible to the top of hard top. We have one offer from Portoroz but we found it quite expensive.  Welcoming your recommendations:
1. Is there any recommendation for solar panel instalation along this route?
2. Does anyone have ideas or info about hard panels mounted on a hardtop?  (Typically we see only soft flexipanels sticking to hardtop). 
3. Any ideas on installing them ourselves (?)
4. Any info you can share about specs that work for you (panel sizes, mppt and connections) all would be helpful.

thanks!



Replies:
Posted By: mr-ludi
Date Posted: 11 May 2024 at 07:26
I will do it on my own in the first two weeks of June.
I bought semi flexible panels from Wattstunde.

https://www.wattstunde.de/produkte/solarmodule/efx.html" rel="nofollow - https://www.wattstunde.de/produkte/solarmodule/efx.html

I have six 125Wp panels and two times 65Wp which makes a total of 880Wp.


Posted By: S&J
Date Posted: 12 May 2024 at 05:56
I have a 458 and have 2x120W on my foredeck plus 2x85W on the side decks.  These are semi flexible and clearly suffer from some shading from the mast and sails.  I get a max of 1.6kW per day.
Last year I decided to install a solar arch with 2x210W rigid panels.  Since then I have not used any shore power and don't think I have actually used the max energy (3.5kW?) I am capable of harvesting.
Whist the semi-flexible panels may be more aesthetically pleasing, they are much more expensive and I believe they will have a shorter life.  Rigid panels will generally perform better as they will run cooler with an air gap under them.
With a hard Bimini, I would definitely investigate getting rigid panels mounted into an aesthetically pleasing frame.

I can recommend Victron products for shunt and MPPT controllers.

I installed all this myself. The major issue is running cables through the hull.

Plenty of pictures of my installation elsewhere on other posts.


-------------
H458 #159 Primal Mediterranean cruising


Posted By: Joel Scarr
Date Posted: 13 May 2024 at 03:21
We've got over 1.1Kw on our 445, 4 panels on the dinghy davit/arch and 3 panels on the hard top. All rigid panels with air gap under.  On the hard top the panels are mounted on 2 lengths of 20x40 RHS aluminium and the wiring run down the forward upright.

Here's a few pics:









Posted By: Sahinsair
Date Posted: 15 May 2024 at 22:40
Is anybody know the size of Hanse 460 hard top..
And if we use rigid panels do you think it looks good?
 I would love if somebody use it and send the pictures. 


Posted By: Sahinsair
Date Posted: 15 May 2024 at 22:56
Hi Ludi. 
Did you compile this list for expecially the measurements of Hanse 460 Hardtop.? We don't have boat yet and we need to order the panels. We have searched for exact measurements of the haed top. But havent found them. 
Do you think that brand is good ?



Posted By: mr-ludi
Date Posted: 16 May 2024 at 06:45
It‘s especially for the size of the 460 hardtop. But it‘s still theoretically, because I haven’t installed it yet. But I have tried it with templates in the shipyard of Hanse, and it should fit.

After doing some research, Wattstunde seems to be a manufacturer with good quality and panels in the right dimensions.


Posted By: Sahinsair
Date Posted: 19 May 2024 at 20:57
Thank you Ludi,  
I have talk some company's in Portoroz and waiting for quotes..One of them quite expensive..he said that Cables are coming down from inside of iron leg of hardtop. I was dreaming there is hole inside of arc. But I learned that there is not. I wonder is there enough space to bring Cables to the Batery area
.


Posted By: mr-ludi
Date Posted: 19 May 2024 at 21:06
Yes, the cable from the hardtop have to fit into the little stainless steel support. But you will only need 2x 4mm2 on each side. That should be ok…


Posted By: Sahinsair
Date Posted: 20 June 2024 at 22:42
We bought the following products from a victron dealer in Portoroz. But unfortunately we couldn't find anyone to install it on the boat. We bought 5 panel 2× 160 and 1x 100 semi flex Nds brand for front. 2x155 for the sides. and 2x100/50 mppt, 1 Multiplus 2, 12/3000 invertör. 1 victron battery monitör and Cerbo.

 They could only give us a very expensive appointment 1 month later.  We bought the products and hope to find someone to install them on the way, probably in Montenegro.   Urgently  As needed, we temporarily glued 2 × 155 W panels to the deck using 3M double-sided tape.   We also moved it to the battery area from the rear toilet side window and mounted it on Victron 100/50 mppt.  We are currently producing 1.6 kwa per day.    After this experience, we gained confidence in mounting on a hardtop, but I need to find answers to 2 questions.   

1. How will we use or attach the panels to the hardtop?   

2. Where can we pass the cables from the hard top to the rear cabins to the WC and reach the batteries? İs anybody has a plan?


Posted By: mr-ludi
Date Posted: 21 June 2024 at 08:02
I installed my solar panels last week.

Quote How will we use or attach the panels to the hardtop?
You can use double sided tape, Sikaflex or other glues.

Quote Where can we pass the cables from the hard top to the rear cabins to the WC and reach the batteries? İs anybody has a plan?
Some parts of the hardtop are hollow. If you open the three inspection holes, you can see that area. You have to locate the panels and drill holes into the hardtop in that area, to get the cables inside the hardtop. Finally you have to get all cables to the portside, to lay them thru the stainless steel support to the rear portside cabin.
In the portside cabin you can connect your charger to the winch, or you lay the cables from the bed, thru the engine area, the water heater, underneath the table to the batteries.


Posted By: Sahinsair
Date Posted: 28 June 2024 at 21:54
Thank you for the information about the transition of solar panel cables to the battery section.  I thought I could rub a pass behind the toilet.  Are there any drawbacks to gluing panels on hard top with Sika?  I didn't trust the double-sided tape very much.  Or should I trust?


Posted By: mr-ludi
Date Posted: 30 June 2024 at 21:21
Originally posted by Sahinsair Sahinsair wrote:

I thought I could rub a pass behind the toilet.
Maybe there is a way behind the toilet. I don’t know. Where are you planning to locate the solar-charger?
Quote Are there any drawbacks to gluing panels on hard top with Sika?  I didn't trust the double-sided tape very much.  Or should I trust?
Solar panels won‘t live forever. You have to replace them after a few years. Sika will make it much harder to remove.


Posted By: Arborist
Date Posted: 04 July 2024 at 14:26
Hi Joel
This is a great set up, I’m looking at an arch for my 400

Could I ask, how do you get to the end of the boom if you need to?
Thanks Eoin 


-------------
hanse 400
2007
no 244


Posted By: Sahinsair
Date Posted: 09 July 2024 at 19:46
Hi friends. Today we have put the solar panels  to the harttop. But still struggling to find holes to bring the cables battery area. I am wery angry to Hanse that they didnt a proper hose for the cables..
When we open the holes in the middle of arc under harttop there is 3 hoses and insede rope. I thought that robes bring the cables to down.  But we couldn't flnd where is connecting. Is anybody knows ? Or is there any body has idea.



Posted By: Sahinsair
Date Posted: 09 July 2024 at 20:05
Originally posted by mr-ludi mr-ludi wrote:

I installed my solar panels last week.

Quote How will we use or attach the panels to the hardtop?
You can use double sided tape, Sikaflex or other glues.

Quote Where can we pass the cables from the hard top to the rear cabins to the WC and reach the batteries? İs anybody has a plan?
Some parts of the hardtop are hollow. If you open the three inspection holes, you can see that area. You have to locate the panels and drill holes into the hardtop in that area, to get the cables inside the hardtop. Finally you have to get all cables to the portside, to lay them thru the stainless steel support to the rear portside cabin.
In the portside cabin you can connect your charger to the winch, or you lay the cables from the bed, thru the engine area, the water heater, underneath the table to the batteries.

Do you have any photo or video how you did. Or may be some more specific information aboute cable passes. 


Posted By: Joel Scarr
Date Posted: 09 July 2024 at 22:15
Hi Eoin
Either I pull the boom to the side a bit and stand on the coach roof or a winch or I put one of the kids on the hardtop. 
I can also use a boat hook from the stern to open the sail bag the last little bit if needed. None of this is too much of a hassle which we’ve used for many years and many miles and well worth the compromise.
Cheers
Joel 



Posted By: mr-ludi
Date Posted: 10 July 2024 at 06:04
Originally posted by Sahinsair Sahinsair wrote:

Do you have any photo or video how you did. Or may be some more specific information aboute cable passes. 
Do you have the electric winches?


Posted By: Sahinsair
Date Posted: 11 July 2024 at 14:16
Originally posted by mr-ludi mr-ludi wrote:

Originally posted by Sahinsair Sahinsair wrote:

Do you have any photo or video how you did. Or may be some more specific information aboute cable passes. 
Do you have the electric winches?

Yes I have. 




Posted By: Sahinsair
Date Posted: 11 July 2024 at 14:17
Originally posted by mr-ludi mr-ludi wrote:

Originally posted by Sahinsair Sahinsair wrote:

Do you have any photo or video how you did. Or may be some more specific information aboute cable passes. 
Do you have the electric winches?
  yes I have Ludi. 



Posted By: mr-ludi
Date Posted: 12 July 2024 at 10:14






The electric winches will make it easy.

If you push the cable thru the stainless steel support on portside, it will arrive above the hatch in the rear cabin.
From the rear cabin you go to the rear locker on portside. Thats where I installed the fuses you can see on my photo.
After about 1.5m you push the cable back to the cabin underneath the bed. Thats where you install the solar charger and connect it to the electric winches installation box.

If you want to connect it directly to the batteries, you have to go on with the orange line.




Posted By: Sahinsair
Date Posted: 12 July 2024 at 22:44
Thank you Ludi.  The photos are very helpful.  While the water maker was being installed on the boat today, I looked for a way to lower the cables.  But it is impossible to lower 2 pieces of 6 mm cables.  Did you need an operation on your hardtop's steel leg?  because the hole is too small. My workers thinking to use drilling to.make the hole bigger. 


Posted By: mr-ludi
Date Posted: 14 July 2024 at 13:20
I used two pairs of 4mm cables. It was tight but ok.


Posted By: Sahinsair
Date Posted: 15 July 2024 at 05:07
 I decided to widen the bottom hole by removing the iron leg of the hard top on the port side.  Thus, we will be able to lower 4 pieces of 6 mm cables. I will us Then I will try to run the cables from the back of the toilet to the batteries. I will use 2 mppt.  




Posted By: Sahinsair
Date Posted: 31 July 2024 at 19:26
I could  being 2 set og 6 mm cable to the battery area.  Its working right now.. totaly I have 630 w panels maximum.I could get 2.5 kw. Planning to install 300 w

 more. Ewen istary water maker it is enough. But I can onlyy start 1 freezer 1 refrigerator. 

I will install 2.more Victron 165  battery .



Posted By: mr-ludi
Date Posted: 02 August 2024 at 13:31
I have 880Wp.

With the shaddow of the boom and the heat at Med, I do have a normal charging current of about 33A during the day. Without any shaddow I sometimes reach 40A.

Don‘t know if it’s ok.
What’s your normal charging current?


Posted By: S&J
Date Posted: 02 August 2024 at 13:47
I also have about 800W, some shaded by boom and mast and 420 on an arch which has little shade.  I max out at about 30A, 3,500Wh a day in the Med.

-------------
H458 #159 Primal Mediterranean cruising


Posted By: marsella
Date Posted: 03 August 2024 at 02:42
Have 933w of solar, all laid on deck with boom shading, this produces in Caribbean anywhere between 3.5kWh and 4kWh of energy per day (30-33Ah) depending on how cloudy it is. Keep also in mind if you have Li batteries and MPPTs, the solar will stop charging once the batteries are full, which will affect the statistics of solar output. My boat is now on the hard in boatyard with only a few security features working, the daily solar need is only about 1kWh per day as I can track in Victron app.


Posted By: mr-ludi
Date Posted: 03 August 2024 at 07:22
We can do a little summary. That helps everyone to compare his results and see how effective the installation works.

Wp / max / normal / energy day / region

S&J: 1.220Wp / 30A / - / 3.500Wh / Med
marsella: 933Wp / 31,5A / - / 3.750Wh / Caribbean
mr-ludi: 880Wp / 32A / 39A / - / Med


Posted By: marsella
Date Posted: 03 August 2024 at 07:43
I think Stuart meant 800 total, not 1,200. There has been ton of discussion on this forum about this, if you use the 'search' featureWink


Posted By: S&J
Date Posted: 04 August 2024 at 15:28
Yes, i have 800W of panels and the max I generally see is 3,500Wh in a day.  This is very similar to the others.  [Edit,: corrected my units!]

-------------
H458 #159 Primal Mediterranean cruising


Posted By: Sahinsair
Date Posted: 01 September 2024 at 10:56
I have installed 2×160  and 2 × 155  with 2 × 100/50 but unfortunately that is not enough..ewen I have installed 2 more Victron 165 battery I have never seen float the batteries .
 I was planjing to add 3 more 100 w panels but electrician who was installing said that you shouldn't install together wiylth others and you should use another mppt. Byt some others said no problem. I really confused.  What is your opinion?


Posted By: marsella
Date Posted: 01 September 2024 at 12:05
Depends on whether you want parallel or serial connection of the new and existing panels. For parallel connection, the voltage will be the same, the current will increase, therefore the amperage rating of the MPPT, and the wire gauge that is used to carry the current from existing panels need to be considered. For serial connection, the voltage increases, the current remains the same, therefore old mppt and wires can be utilized, but the problem comes if the area is subjected to shadowing, in which case once one panel shuts down, you will not get any power from all serially connected panels.



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