Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 26-02-2010, 14:48   #1
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Solar Panel Fuse

I installed 330W of solar panels recently. I have hooked up some temporary wiring, but now I am doing the job properly. I have some tinned 35mm square (AWG 2) cable and am planning the electrical installation.
The wiring will be lead back to the service battery with its own battery switch I was originally planning 30A circuit breakers or fuses in the system, but the options for fuse holders that will sensibly take 35 mm squared cable is limited. I could get a 40 amp ANL fuse, but it would need to be ordered from overseas.
I already have a 100 amp ANL fuse protecting the service battery circuit (the panels will charge service only) and I am considering using this existing fuse as the only protection in the solar panel wiring.
Adding the complexity of another fuse holder in the battery box with the attendant voltage drop, risk of poor connections and cost seems to be of limited value.
I would be grateful for a second opinion.
__________________
noelex 77 is offline   Reply With Quote
Old 26-02-2010, 14:58   #2
Commercial Member
 
CharlieJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Petersburg, FL
Boat: Gulfstar Long Range Trawler; 53'; BearBoat
Posts: 837
Every B+ conductor on the boat, with the exception of the starting circuit, should be protected by a properly sized over current protection device (OCPD: fuse or circuit breaker) with an appropriate ampere interrupt capacity (AIC).
__________________
Charlie Johnson
JTB Marine Corporation
"The Devil is in the details and so is salvation."
CharlieJ is offline   Reply With Quote
Old 26-02-2010, 15:17   #3
Registered User
 
sailvayu's Avatar

Join Date: Mar 2006
Location: Fort Myers FL
Boat: Irwin 40
Posts: 878
I am guessing you are using the #2 to avoid voltage drop as you do not state run length. I think I would install a electrical enclosure box as close to the batteries as possible. In the box I would install 2 buss bars and connect your #2 wire to that from there connect #8 wire to a 30 amp Airpax type trip free switch/breaker mounted on the lid or side. You would no longer need a separate on off switch as your could use the breaker to turn off the circuit. Would not see any real voltage drop in the very short #8 wire run from the bus bars to the back of the breaker. Clean and simple don't forget the label, pet peeve of mine no label on breakers and switches.

Good luck
__________________
Capt. Wayne Canning, AMS
www.projectboat.info
http://sailvayu.com/
sailvayu is offline   Reply With Quote
Reply

Tags
fuses

Thread Tools
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
AC Fuse Panel Location gpeacock Electrical: Batteries, Generators & Solar 4 01-12-2009 09:29
Does anyone have this solar panel? Chief Engineer Electrical: Batteries, Generators & Solar 7 25-04-2008 01:00
Which solar panel??? marno Electrical: Batteries, Generators & Solar 5 02-08-2007 23:09



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:32.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.