Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 21-06-2010, 04:53   #1
Registered User

Join Date: May 2010
Posts: 5
Need to Add Buss Bar to New Batteries

We are installing new AGM batteries, and they have threaded holes for connecting the cables.

Because I have several cables to attach, I want to mount a buss bar there rather than stacking them all under the single bolt. I could make this of copper or brass. Copper has less resistance, but most buss bars I've seen are brass. Why is that, corrosion resistance, or for threading capability ?

Which would be better ? Also, I know I can find brass (Or bronze) bolts. Would copper, if i can find them, be better ?

Thanks.
__________________

__________________
runningman is offline   Reply With Quote
Old 21-06-2010, 05:24   #2
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 8,578
Images: 14
Company called Blue Sea have some nice bus bars, which we used. Stainless steel so they don't turn into a horrible green mess. We used them becuase like you I didn't like the idea of half a dozen wires all connected to an engine bolt.

BusBars, Connectors & Insulators - Blue Sea Systems

Pete
__________________

__________________
Pete7 is offline   Reply With Quote
Old 21-06-2010, 05:24   #3
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,592
Images: 240
Copper (tinned, if available).
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 21-06-2010, 06:17   #4
Marine Service Provider
 
Maine Sail's Avatar

Join Date: Jan 2007
Location: Maine
Boat: CS-36T - Cupecoy
Posts: 3,060
Quote:
Originally Posted by Pete7 View Post
Company called Blue Sea have some nice bus bars, which we used. Stainless steel so they don't turn into a horrible green mess. We used them becuase like you I didn't like the idea of half a dozen wires all connected to an engine bolt.

BusBars, Connectors & Insulators - Blue Sea Systems

Pete
Pete,

Blue Sea uses tin plated copper for most all of their buss bars. Stainless has quite low conductivity when compared to copper on the IACS Conductivity scale. Copper is the metal all others are based on when it comes to conductivity. Only silver has a higher conductivity rating than copper.

Copper is at 100% on the IACS scale and stainless is down in the 2-3% range. Silver is rated as 105% and gold at 70%. Brass is only rated at about 28% so you'd need a very large piece of it to equal coppers conductivity.

Blue Seas is the right place to get quality pre-made buss bars.
__________________
Marine How To Articles
Maine Sail is online now   Reply With Quote
Old 21-06-2010, 06:30   #5
cruiser

Join Date: Sep 2007
Location: Tampa to New York
Boat: Morgan 33 OutIsland, Magic and 33' offshore scott design "Cutting Edge"
Posts: 1,594
I made my bus bars out of 1"x1/4" copper stock purchased from metal supermarket. Stainless bolts, but the connectors are contacting the bar stock.
__________________
forsailbyowner is offline   Reply With Quote
Old 21-06-2010, 06:42   #6
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,117
Quote:
Originally Posted by forsailbyowner View Post
I made my bus bars out of 1"x1/4" copper stock purchased from metal supermarket. Stainless bolts, but the connectors are contacting the bar stock.
--and if I might add, bronze, not stainless, washers between the contact surfaces and the fasteners.
__________________
so many projects--so little time !!
Blue Stocking is online now   Reply With Quote
Old 21-06-2010, 15:24   #7
Registered User

Join Date: May 2010
Posts: 5
Thanks !
We'll get a copper bar, and spray some coating on it after assembly. Looking at silicon bronze fasteners.
__________________
runningman is offline   Reply With Quote
Old 21-06-2010, 15:35   #8
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 8,578
Images: 14
Quote:
Originally Posted by Maine Sail View Post
Pete,

Blue Sea uses tin plated copper for most all of their buss bars. Stainless has quite low conductivity when compared to copper on the IACS Conductivity scale. .
Blimey, I spent all afternoon bolts wires to the thing without even realising. I stand corrected, but yes nice kit as are their switches.

Pete
__________________

__________________
Pete7 is offline   Reply With Quote
Reply

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
Golf Cart Batteries vs Marine Batteries Bill Estes Electrical: Batteries, Generators & Solar 52 27-01-2010 00:28
Two Batteries creakyboy Electrical: Batteries, Generators & Solar 4 03-09-2009 18:04
Buss Bar Question Hyprdrv Electrical: Batteries, Generators & Solar 20 28-04-2009 12:46
AGM Batteries Le Freak Electrical: Batteries, Generators & Solar 3 08-06-2008 18:36
gel batteries gasmag Electrical: Batteries, Generators & Solar 9 16-11-2007 16:20



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:30.


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.