Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 06-03-2020, 13:22   #1
Registered User

Join Date: Dec 2018
Posts: 48
Solar Panel Install (higher voltage)

I’ll be installing a couple Panasonic N335 solar panels (in parallel) on our boat soon, connected to a Victron 150/45 solar controller. They operate at a much higher voltage (59.4) than standard marine industry hardware, and I want to be sure I’m getting the fusing/cb part correct.

The question is, do I need to install a fuse/cb and switch between the panels and the controller?

If I do, can someone link me to a product solution? Everything I find is only 48v max ...

In other threads i’ve seen people say rate the cable higher than the panels can ever deliver, and don’t fuse/cb it.

Please help - thanks,
__________________

SVJOCO is offline   Reply With Quote
Old 06-03-2020, 13:47   #2
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Boat: Bestevaer.
Posts: 12,068
Re: Solar Panel Install (higher voltage)

It is sensible that you are thinking about this problem, but if my understanding of your system is correct, you do not need a fuse or CB between the panel and the controller.

However, it is helpful (and in many cases essential) to be able switch off the solar panel output to the controller.

Marine switches and fuses are often limited to maximum of 32v so you need to look at the specifications closely.

Often the most practical solution is to use industrial circuit breakers. These can have a relatively high DC voltage limit and are commonly used on household solar panel installations that operate at DC voltages above typical marine systems.
__________________

noelex 77 is offline   Reply With Quote
Old 06-03-2020, 14:35   #3
Registered User

Join Date: Apr 2018
Location: Florida
Boat: Manta 42
Posts: 11
Re: Solar Panel Install (higher voltage)

Midnite Solar makes DIN mount breakers that can handle higher voltages.
longhorn is offline   Reply With Quote
Old 06-03-2020, 17:01   #4
Registered User
 
landlockedgm's Avatar

Join Date: Jul 2010
Location: Cruising the Bahamas
Boat: Endeavour 30 catamaran
Posts: 36
Re: Solar Panel Install (higher voltage)

Blue Seas Systems C series toggle circuit breakers are rated for 80V DC.

https://www.bluesea.com/products/735...le_Pole_15_Amp
landlockedgm is offline   Reply With Quote
Old 07-03-2020, 09:30   #5
Registered User

Join Date: Apr 2017
Posts: 114
Images: 1
Re: Solar Panel Install (higher voltage)

I've done it both ways, and it is nicer to have a breaker between panels and controller. I used the 80 volt DC circuit breaker. Remember that your chosen controller will limit watts to 650W.
__________________
Yellowjacket
Yellowjacket is offline   Reply With Quote
Old 08-03-2020, 04:52   #6
Registered User

Join Date: Feb 2006
Location: Eastern Caribbean for the 2020 season then east coast or Panama
Boat: Lagoon 470 cat
Posts: 431
Re: Solar Panel Install (higher voltage)

Many (most or all?) controllers specifically say not to have the panels connected to the controller if the batteries are not connected to the controller first. The advantage of a means to disconnect the panels is very convenient.



Fusing between the controller and batteries is of course a no brainer.

My panels are 36+- volts and I was able to get a suitable breaker at West Marine (9 years ago). Would think Amazon, or if not there, EBay would have something for sure. Just with EBay you may have to wait for it to be sent from China.
Moontide is offline   Reply With Quote
Old 08-03-2020, 05:48   #7
Registered User

Join Date: Dec 2018
Posts: 48
Re: Solar Panel Install (higher voltage)

Thank you all.

The C-Series toggle is a good find. Of course, BlueSea doesn’t make a simple 1 or 2 breaker panel that will accommodate it. SMH.

I see Midnite Solar has a “BabyBox” enclosure that might work in my case. Back to DIN mount I go I guess.
SVJOCO is offline   Reply With Quote
Old 08-03-2020, 05:49   #8
Registered User

Join Date: Dec 2018
Posts: 48
Re: Solar Panel Install (higher voltage)

Quote:
Originally Posted by SVJOCO View Post
Thank you all.

The C-Series toggle is a good find. Of course, BlueSea doesn’t make a simple 1 or 2 breaker panel that will accommodate it. SMH.

I see Midnite Solar has a “BabyBox” enclosure that might work in my case. Back to DIN mount I go I guess.


I should say - surface mount panel that I can essentially install inline somewhere along the circuit.
SVJOCO is offline   Reply With Quote
Old 08-03-2020, 06:16   #9
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Boat: Bestevaer.
Posts: 12,068
Re: Solar Panel Install (higher voltage)

This was our installation using commercial DIN rail CB:
Attached Thumbnails
Click image for larger version

Name:	6664CBE2-2D14-4160-81B7-4A40DBB076CE.jpg
Views:	68
Size:	404.7 KB
ID:	210257  
noelex 77 is offline   Reply With Quote
Old 08-03-2020, 11:45   #10
Registered User

Join Date: Apr 2017
Posts: 114
Images: 1
Re: Solar Panel Install (higher voltage)

Quote:
Originally Posted by Moontide View Post
Would think Amazon, or if not there, EBay would have something for sure. Just with EBay you may have to wait for it to be sent from China.
Be wary of Amazon … I was shipped a breaker unsuitable for this voltage, tho it was represented to be so.
__________________

__________________
Yellowjacket
Yellowjacket is offline   Reply With Quote
Reply

Tags
solar

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Polished solar panel versus higher output bobs Electrical: Batteries, Generators & Solar 27 20-09-2016 21:24
Low voltage vs higer voltage solar Singleprop Electrical: Batteries, Generators & Solar 11 06-07-2015 19:35
Solar Output in Higher Latitudes GeoPowers Electrical: Batteries, Generators & Solar 6 10-01-2010 21:42
Solar Panel Voltage Drops to Zero Sergy Electrical: Batteries, Generators & Solar 4 05-05-2009 10:10

Advertise Here


All times are GMT -7. The time now is 17:27.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.